Benchmarking Methodology for EVPN and PBB-EVPN
draft-ietf-bmwg-evpntest-09
| Document | Type | Active Internet-Draft (bmwg WG) | |
|---|---|---|---|
| Authors | sudhin jacob , Kishore Tiruveedhula | ||
| Last updated | 2021-07-01 (latest revision 2021-06-18) | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | Informational | ||
| Formats | pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Sarah Banks | ||
| Shepherd write-up | Show (last changed 2021-05-05) | ||
| IESG | IESG state | IESG Evaluation::Revised I-D Needed | |
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| Responsible AD | Warren Kumari | ||
| Send notices to | Sarah Banks <sbanks@encrypted.net> | ||
| IANA | IANA review state | IANA OK - No Actions Needed | |
Internet Engineering Task Force S. Jacob, Ed.
Internet-Draft Independent
Intended status: Informational K. Tiruveedhula
Expires: December 20, 2021 Juniper Networks
June 18, 2021
Benchmarking Methodology for EVPN and PBB-EVPN
draft-ietf-bmwg-evpntest-09
Abstract
This document defines methodologies for benchmarking EVPN and PBB-
EVPN performance. EVPN is defined in RFC 7432, and is being deployed
in Service Provider networks. Specifically, this document defines
the methodologies for benchmarking EVPN/PBB-EVPN convergence, data
plane performance, and control plane performance.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
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and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 20, 2021.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
1.2. Terminologies . . . . . . . . . . . . . . . . . . . . . . 3
2. Test Topology . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Test Cases for EVPN Benchmarking . . . . . . . . . . . . . . 7
3.1. Data Plane MAC Learning . . . . . . . . . . . . . . . . . 7
3.2. Control Plane MAC Learning . . . . . . . . . . . . . . . 8
3.3. MAC Flush-Local Link Failure and Relearning . . . . . . . 9
3.4. MAC Flush-Remote Link Failure and Relearning. . . . . . . 10
3.5. MAC Aging . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6. Remote MAC Aging . . . . . . . . . . . . . . . . . . . . 12
3.7. Control and Data plane MAC Learning . . . . . . . . . . . 12
3.8. High Availability. . . . . . . . . . . . . . . . . . . . 13
3.9. ARP/ND Scale . . . . . . . . . . . . . . . . . . . . . . 14
3.10. Scaling of Services . . . . . . . . . . . . . . . . . . . 15
3.11. Scale Convergence . . . . . . . . . . . . . . . . . . . . 16
3.12. SOAK Test. . . . . . . . . . . . . . . . . . . . . . . . 17
4. Test Cases for PBB-EVPN Benchmarking . . . . . . . . . . . . 18
4.1. Data Plane Local MAC Learning . . . . . . . . . . . . . . 18
4.2. Data Plane Remote MAC Learning . . . . . . . . . . . . . 18
4.3. MAC Flush-Local Link Failure . . . . . . . . . . . . . . 19
4.4. MAC Flush-Remote Link Failure . . . . . . . . . . . . . . 20
4.5. MAC Aging . . . . . . . . . . . . . . . . . . . . . . . . 21
4.6. Remote MAC Aging. . . . . . . . . . . . . . . . . . . . . 22
4.7. Local and Remote MAC Learning . . . . . . . . . . . . . . 23
4.8. High Availability . . . . . . . . . . . . . . . . . . . . 23
4.9. Scale . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.10. Scale Convergence . . . . . . . . . . . . . . . . . . . . 25
4.11. Soak Test . . . . . . . . . . . . . . . . . . . . . . . . 26
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 27
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 27
7. Security Considerations . . . . . . . . . . . . . . . . . . . 27
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.1. Normative References . . . . . . . . . . . . . . . . . . 27
8.2. Informative References . . . . . . . . . . . . . . . . . 28
Appendix A. Appendix . . . . . . . . . . . . . . . . . . . . . . 28
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 28
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1. Introduction
EVPN is defined in RFC 7432, and describes BGP MPLS based Ethernet
VPNs (EVPN). PBB-EVPN is defined in RFC 7623, discusses how Ethernet
Provider backbone Bridging can be combined with EVPNs to provide a
new/combined solution. This draft defines methodologies that can be
used to benchmark both RFC 7432 and RFC 7623 solutions. Further,
this draft provides methodologies for benchmarking the performance of
EVPN data and control planes, MAC learning, MAC flushing, MAC aging,
convergence, high availability, and scale.
1.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 8174 [RFC8174].
1.2. Terminologies
Most of the terminology used in this documents comes from [RFC7432]
and [RFC7632].
All-Active Redundancy Mode: When all PEs attached to an Ethernet
segment are allowed to forward known unicast traffic to/from that
Ethernet segment for a given VLAN, then the Ethernet segment is
defined to be operating in All-Active redundancy mode.
AA: All Active mode
CE: Customer Router/Devices/Switch.
DF: Designated Forwarder
DUT: Device under test.
Ethernet Segment (ES): When a customer site (device or network) is
connected to one or more PEs via a set of Ethernet links, then that
set of links is referred to as an 'Ethernet segment'.
EVI: An EVPN instance spanning the Provider Edge (PE) devices
participating in that EVPN.
Ethernet Segment Identifier (ESI): A unique non-zero identifier that
identifies an Ethernet segment is called an 'Ethernet Segment
Identifier'.
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Ethernet Tag: An Ethernet tag identifies a particular broadcast
domain, e.g., a VLAN. An EVPN instance consists of one or more
broadcast domains.
Interface: Physical interface of a router/switch.
IRB: Integrated routing and bridging interface
MAC: Media Access Control addresses on a PE.
MHPE2: Multi homed Provider Edge router 2.
MHPE1: Multi homed Provider Edge router 1.
SHPE3: Single homed Provider Edge Router 3.
PE: Provider Edge device.
P: Provider Router.
RR: Route Reflector.
RT: Traffic Generator.
Sub Interface: Each physical Interfaces is subdivided in to a set of
Logical units.
SA: Single Active
Single-Active Redundancy Mode: When a single PE (among all the PEs
attached to an Ethernet segment) is the only PE allowed to forward
traffic to/from a given Ethernet segment for a given VLAN, then that
Ethernet segment is defined to be operating in Single-Active
redundancy mode.
2. Test Topology
There are five routers in the Test setup. SHPE3, RR/P, MHPE1 and
MHPE2 emulating a service provider network. CE is a customer device
connected to MHPE1 and MHPE2. it is configured with bridge domains in
multiple VLANS. The traffic generator is connected to the CE and
SHPE3. The MHPE1 acts as DUT. The traffic generator will be used as
sender and receiver of traffic. The test measurements are taken from
the DUT. MHPE1 and MHPE2 are multi-homed routers connected to CE
running single active mode. The traffic generator will be generating
traffic at 10% of the line rate.
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+----------------+ +---------------------------+
| | | |
| | |Traffic Generator sender/ |
| SHPE3 | |receiver of layer 2 traffic|
| +----------------| with multiple Vlans |
| | +---------------------------+
+---------+------+
| Core Link
|
+--------+-----+
| |
| RR/P +----------------------+
| | Core link |
| | |
+--+-----------+ |
| |
| core link |
| |
+-------------+---+ +------+------------+
| | | |
| | | |
| MHPE1(DUT) | | MHPE2 |
| | | |
| | | |
+-----------------+------+ +-----+-------------------+
| |
PE-CE link | | PE-CE link
| |
| |
| |
| |
+-----+----------+----+ +----------------------------+
| | | Traffic Generator sender/ |
| | |receiver of layer 2 traffic|
| CE/Layer 2 bridge +-----------+ with multiple Vlans |
| | +----------------------------+
| |
+---------------------+
Topology 1
Test Setup
Figure 1
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+--------------+------------------+-------------+---------+-----------+----------------+
| | | | | | |
| Mode | Test | Traffic | Sender | Receiver | |
| | | Direction | | | |
+--------------------------------------------------------------------------------------+
| | | | | | |
|Single Active | Local MAC | | CE | SHPFE3 |Layer 2 traffic |
| | Learning | Uni | | | |
| | | | | | multiple MAC |
+--------------------------------------------------------------------------------------+
| | | | | | |
|Single Active | Remote MAC | | | CE |Layer 2 traffic |
| | Learning | Uni | SHPE3 | | |
| | | | | |multiple MAC |
+--------------------------------------------------------------------------------------+
| | | | | | |
|Single Active | Scale Convergence| Bi | | CE/SHPE3 | |
| | | |CE/SHPE3 | |Layer 2 traffic |
| | Local& Remote | | | |multiple MAC & |
| | Learning | | | | vlans |
+--------------+------------------+-------------+---------+-----------+----------------+
Table showing the traffic directions of various EVPN/PBB-EVPN
benchmarking test cases. Depending on the test scenario, the traffic
can be uni-directional or bi-directional (configured in the traffic
generator).
Figure 2
Test Setup Configurations:
SHPE3 is configured with Interior Gateway protocols like OPSF or IS-
IS for underlay, LDP for MPLS support, Interior Border Gateway with
EVPN address family for overlay support. This router must be
configured with N EVPN/PBB-EVPN instances for testing. Traffic
generator is connected to this router for sending and receiving
traffic.
RR is configured with Interior Gateway protocols like OPSF or IS-IS
for underlay, LDP for MPLS support, Interior Border Gateway with EVPN
address family for overlay support. This router function as both
provider router and a route reflector.
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MHPE1 is configured with Interior Gateway protocols like OPSF or IS-
IS for underlay, LDP for MPLS support, Interior Border Gateway with
EVPN address family for overlay support. This router must be
configured with N EVPN/PBB-EVPN instances for testing. This router
is configured with ESI per vlan or ESI per interface. It is
functioning as multi homing PE working on Single Active EVPN mode.
This router serves as the DUT and it is connected to CE. MHPE1 is
acting as DUT for all the test cases.
MHPE2 is configured with Interior Gateway protocols like OPSF or IS-
IS for underlay, LDP for MPLS support,Interior Border Gateway with
EVPN address family for overlay support. This router must be
configured with N EVPN/PBB-EVPN instances for testing. This router
is configured with ESI per vlan or ESI per interface. It is
functioning as multi homing PE working on Single Active EVPN mode.
It is connected to CE. It acts as standby router during the tests.
CE is acting as bridge configured with multiple vlans. The same
vlans are configured on MHPE1,MHPE2,SHPE3. traffic generator is
connected to CE. the traffic generator acts as sender or receiver of
traffic.
Depending up on the test scenarios the traffic generators will be
used to generate uni directional or bi directional flows.
The above configuration will be serving as the base configuration for
all test cases.
The X below is used as variable to denote scale factor of the testing
parameters.It must be in the multiples of 100.
3. Test Cases for EVPN Benchmarking
3.1. Data Plane MAC Learning
Objective:
Measure the time taken to learn the Data Plane MAC in DUT.
Topology : Topology 1
Procedure:
The data plane MAC learning can be measured using the parameters
defined in RFC 2889 section 5.8.
Confirm the DUT is up and running with EVPN.
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Traffic generator connected to CE must send frames with X different
source and destination MAC address for one vlan, the same vlan must
be present in all the devices except RR.
Send X unicast frames from CE to MHPE1(DUT) for one EVPN instance
working in SA mode.
The DUT will learn these X MAC in data plane.
Measurement :
Measure the time taken to learn X MAC locally in DUT EVPN MAC table.
The data plane measurement is taken by considering DUT as black box.
The range of MAC are known from traffic generator, the same must be
learned in DUT, the time taken to learn X MAC is measured. The
measurement is carried out using external server which polls the DUT
using automated scripts which measures the MAC counter value with
timestamp. Note at present there are no standrard models to measure
the counters.
The test is repeated for N times and the values are collected. The
MAC learning rate is calculated by averaging the values obtained from
N samples. N is an arbitrary number to get a sufficient sample. The
time measured for each sample is denoted by T1,T2...Tn.
MAC learning rate = (T1+T2+..Tn)/N
3.2. Control Plane MAC Learning
Objective:
Measure the time taken to learn the control plane MAC.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Traffic generator connected to SHPE3 must send frames with X
different source and destination MAC address for one vlan, the same
vlan must be present in all the devices except RR.
Ensure the frames must be destined to one EVPN instance.
The DUT will learn these X MAC in control plane.
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Measurement :
Measure the time taken by the DUT to learn the X MAC in the data
plane. The test is repeated for N times and the values are
collected. The remote MAC learning rate is calculated by averaging
the values obtained from N samples. N is an arbitrary number to get
a sufficient sample. The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp. Note at present there are no standrard
models to measure the counters.
MAC learning rate = (T1+T2+..Tn)/N
3.3. MAC Flush-Local Link Failure and Relearning
Objective:
Measure the time taken to flush the Data Plane MAC and the time taken
to relearn the same amount of MAC.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from CE using traffic generator for one vlan.
Ensure the DUT learns all X MAC addresses in data plane.
Fail the DUT-CE link and measure the time taken to flush these X MAC
from the EVPN MAC table.
Bring up the link which was made Down(the link between DUT and CE).
Measure time taken by the DUT to relearn these X MAC.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken for flushing these X MAC addresses. Measure
the time taken to relearn these X MAC in DUT. The test is repeated
for N times and the values are collected. The flush and the
relearning time is calculated by averaging the values obtained by N
samples. N is an arbitrary number to get a sufficient sample. The
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time measured for each sample is denoted by T1,T2...Tn. The
measurement is carried out using external server which polls the DUT
using automated scripts which measures the MAC counter value with
timestamp.
Flush rate = (T1+T2+..Tn)/N
Relearning rate = (T1+T2+..Tn)/N
3.4. MAC Flush-Remote Link Failure and Relearning.
Objective:
Measure the time taken to flush the Control plane MAC learned in DUT
during remote link failure and the time taken to relearn.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Bring down the link between SHPE3 and traffic generator.
SHPE3 will withdraw the routes from DUT due to link failure.
Measure the time taken to flush the DUT EVPN MAC table. The DUT and
MHPE2 are running SA mode.
Bring up the link which was made Down(the link between SHPE3 and
traffic generator).
Measure time taken by the DUT to relearn these X MAC from control
plane.
Measurement :
Measure the time taken to flush X remote MAC from EVPN MAC table of
the DUT. Measure the time taken to relearn these X MAC in DUT. The
test is repeated for N times and the values are collected. The flush
rate is calculated by averaging the values obtained by N samples. N
is an arbitrary number to get a sufficient sample. The time measured
for each sample is denoted by T1,T2...Tn. The measurement is carried
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out using external server which polls the DUT using automated scripts
which measures the MAC counter value with timestamp.
Flush rate = (T1+T2+..Tn)/N
Relearning rate = (T1+T2+..Tn)/N
3.5. MAC Aging
Objective:
To measure the MAC Aging time.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from CE using traffic generator for one vlan.
Ensure these X MAC addresses are learned in DUT.
Then stop the traffic.
Ensure the DUT and other devices in the test are using the default
timers for aging.
Measure the time taken to flush X MAC from DUT EVPN MAC table due to
aging.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken to flush X MAC addresses due to aging. The
test is repeated for N times and the values are collected. The aging
is calculated by averaging the values obtained by N samples. N is an
arbitrary number to get a sufficient sample. The time measured for
each sample is denoted by T1,T2...Tn. The measurement is carried out
using external server which polls the DUT using automated scripts
which measures the MAC counter value with timestamp.
Aging time for X MAC in sec = (T1+T2+..Tn)/N
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3.6. Remote MAC Aging
Objective:
Measure the control plane learned MAC Aging time.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Ensure these X MAC addresses are learned in DUT via control plane.
Then stop the traffic.
Ensure the DUT and other devices in the test are using the default
timers for aging.
Measure the time taken to flush X MAC from DUT EVPN MAC table due to
aging.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken to flush X remote MAC learned in DUT EVPN MAC
table due to aging. The test is repeated for N times and the values
are collected. The aging is calculated by averaging the values
obtained by N samples. N is an arbitrary number to get a sufficient
sample. The time measured for each sample is denoted by T1,T2...Tn.
The measurement is carried out using external server which polls the
DUT using automated scripts which measures the MAC counter value with
timestamp.
Aging time for X MAC in sec = (T1+T2+..Tn)/N
3.7. Control and Data plane MAC Learning
Objective:
To record the time taken to learn both local and remote MAC.
Topology : Topology 1
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Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Send X frames with different source and destination MAC addresses
from traffic generator connected to CE for one vlan.
The source and destination addresses of flows must be complimentary
to have unicast flows.
Measure the time taken by the DUT to learn 2X in EVPN MAC table.
DUT and MHPE2 are running in SA mode.
Measurement :
Measure the time taken to learn 2X MAC addresses in DUT EVPN MAC
table. The test is repeated for N times and the values are
collected. The MAC learning time is calculated by averaging the
values obtained by N samples. N is an arbitrary number to get a
sufficient sample. The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp.
MAC learning rate = (T1+T2+..Tn)/N
3.8. High Availability.
Objective:
Measure traffic loss during routing engine fail over.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X frames from CE to DUT from traffic generator with X different
source and destination MAC addresses.
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Send X frames from traffic generator to SHPE3 with X different source
and destination MAC addresses, so that 2X MAC address will be learned
in the DUT.
There is a bi directional traffic flow with X pps in each direction.
Ensure the DUT learn 2X MAC.
Then do a routing engine fail-over.
Measurement :
The expectation of the test is 0 traffic loss with no change in the
DF role. DUT should not withdraw any routes. But in cases where the
DUT is not property synchronised between master and standby, due to
that packet loss are observed. In that scenario the packet loss is
measured.The test is repeated for N times and the values are
collected. The packet loss is calculated by averaging the values
obtained by N samples. N is an arbitrary number to get a sufficient
sample. The time measured for each sample is denoted by T1,T2...Tn.
The measurement is carried out using external server which polls the
DUT using automated scripts to ensure the DUT learned 2X MAC. The
packet drop is measured using traffic generator.
Packet loss in sec with 2X MAC addresses = (T1+T2+..Tn)/N
3.9. ARP/ND Scale
Measure the DUT scaling limit of ARP/ND.
Objective:
Measure the ARP/ND scale of the DUT.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Send X arp/neighbour discovery(ND) from the traffic generator to DUT
with different sender ip/ipv6, MAC addresses to the target IRB
address configured in EVPN instance.
The EVPN instance learns the MAC+ip and MAC+ipv6 addresses from these
request and advertise as type 2 MAC+ip/MAC+ipv6 route to remote
provide edge routers which have same EVPN configurations.
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The value of X must be increased at a incremental value of 5% of X,
till the limit is reached. The limit is where the DUT cant learn any
more type 2 MAC+ip/MAC+ipv6.The test must be separately conducted for
arp and ND.
Measurement :
Measure the scale limit of type 2 MAC+ip/MAC+ipv6 route which DUT can
learn. The test is repeated for N times and the values are
collected. The scale limit is calculated by averaging the values
obtained by N samples for both MAC+ip and MAC+ipv6. N is an
arbitrary number to get a sufficient sample. The scale value
obtained by each sample be v1,v2..vn for MAC+ipv4 and s1,s2..sn for
MAC+ipv6. The measurement is carried out using external server which
polls the DUT using automated scripts to find the scale limit of
MAC+ipv4/MAC+ipv6.
Scale limit for MAC+ip = (v1+v2+..vn)/N
Scale limit for MAC+ipv6 = (s1+s2+..sn)/N
3.10. Scaling of Services
Objective:
Measure the scale of EVPN instances that a DUT can hold.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
The DUT, MHPE2 and SHPE3 are scaled to N EVI.
Ensure routes received from MHPE2 and SHPE3 for N EVI in the DUT.
Then increment the scale of N by 5% of N till the limit is reached.
The limit is where the DUT cant learn any EVPN routes from its peers.
Measurement :
There should not be any loss of route types 1,2,3 and 4 in DUT. DUT
must relearn all type 1, 2, 3 and 4 from remote routers. The DUT
must be subjected to various values of N to find the optimal scale
limit. The scope of the test is find out the maximum EVPN instance
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that a DUT can hold. The measurement is carried out using external
server which polls the DUT using automated scripts to find the scale
limit of EVPN instances.
3.11. Scale Convergence
Objective:
Measure the convergence time of DUT when the DUT is scaled with EVPN
instance along with traffic.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Scale N EVIs in DUT,SHPE3 and MHPE2.
Send F frames to DUT from CE using traffic generator with X different
source and destination MAC addresses for N EVI's.
Send F frames from traffic generator to SHPE3 with X different source
and destination MAC addresses.
There will be 2X number of MAC addresses will be learned in DUT EVPN
MAC table.
There is a bi directional traffic flow with F pps in each direction.
Then clear the BGP neighbours in the DUT.
Once the BGP session is in established state in DUT.
Measure the time taken to learn 2X MAC address in DUT MAC table.
Measurement :
The DUT must learn 2X MAC addresses. Measure the time taken to learn
2X MAC in DUT. The test is repeated for N times and the values are
collected. The convergence time is calculated by averaging the
values obtained by N samples. N is an arbitrary number to get a
sufficient sample.The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp.
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Time taken to learn 2X MAC in DUT = (T1+T2+..Tn)/N
3.12. SOAK Test.
Objective:
This test is carried out to measure the stability of the DUT in a
scaled environment with traffic over a period of time "T'". In each
interval "t1" the DUT CPU usage, memory usage are measured. The DUT
is checked for any crashes during this time period.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with EVPN.
Scale N EVI's in DUT, SHPE3 and MHPE2.Send F frames to DUT from CE
using traffic generator with different X source and destination MAC
addresses for N EVI's.
Send F frames from traffic generator to SHPE3 with X different source
and destination MAC addresses.
There will be 2X number of MAC addresses will be learned in DUT EVPN
MAC table.
There is a bi directional traffic flow with F pps in each direction.
The DUT must run with traffic for 24 hours.
Every hour check for memory leak in EVPN process, CPU usage and
crashes in DUT.
Measurement :
Take the hourly reading of CPU, process memory. There should not be
any memory leak, crashes, CPU spikes. The CPU spike is determined as
the sudden increase of CPU usage to 100 percent compared to the
average usage. The average value vary from device to device. Memory
leak is determined as the increase of memory usage with respect to
time. The expectation is under steady state the memory usage for
EVPN process should not increase with respect to time. The
measurement is carried out using external server which polls the DUT
using automated scripts which captures the CPU usage and process
memory.
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4. Test Cases for PBB-EVPN Benchmarking
4.1. Data Plane Local MAC Learning
Objective:
Measure the time taken to learn the Data Plane MAC in DUT.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Traffic generator connected to CE must send frames with X different
source and destination MAC address for one vlan, the same vlan must
be present in all the devices except RR.
Send X unicast frames from CE to MHPE1(DUT) for one PBB-EVPN instance
working in SA mode.
The DUT will learn these X MAC in data plane.
Measurement :
Measure the time taken to learn X MAC locally in DUT PBB-EVPN MAC
table. The data plane measurement is taken by considering DUT as
black box. The range of MAC are known from traffic generator, the
same must be learned in DUT, the time taken to learn X MAC is
measured.The measurement is carried out using external server which
polls the DUT using automated scripts which measures the MAC counter
value with timestamp.
The test is repeated for N times and the values are collected. The
MAC learning rate is calculated by averaging the values obtained from
N samples. N is an arbitrary number to get a sufficient sample. The
time measured for each sample is denoted by T1,T2...Tn.
MAC learning rate = (T1+T2+..Tn)/N
4.2. Data Plane Remote MAC Learning
Objective:
To Record the time taken to learn the remote MAC.
Topology : Topology 1
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Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Traffic generator connected to SHPE3 must send frames with X
different source and destination MAC address for one vlan, the same
vlan must be present in all the devices except RR.
Ensure the frames must be destined to one PBB-EVPN instance.
The DUT will learn these X MAC in data plane.
Measurement :
Measure the time taken by the DUT to learn the X MAC in the data
plane. The test is repeated for N times and the values are
collected. The remote MAC learning rate is calculated by averaging
the values obtained from N samples. N is an arbitrary number to get
a sufficient sample. The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp.
MAC learning rate = (T1+T2+..Tn)/N
4.3. MAC Flush-Local Link Failure
Objective:
Measure the time taken to flush the locally learned MAC and the time
taken to relearn the same amount of MAC.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from CE using traffic generator for one vlan.
Ensure the DUT learns all X MAC addresses in data plane.
Fail the DUT-CE link and measure the time taken to flush these X MAC
from the PBB-EVPN MAC table.
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Bring up the link which was made Down(the link between DUT and
CE).Measure time taken by the DUT to relearn these X MAC.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken for flushing these X MAC addresses. Measure
the time taken to relearn these X MAC in DUT. The test is repeated
for N times and the values are collected. The flush and the
relearning time is calculated by averaging the values obtained by N
samples. N is an arbitrary number to get a sufficient sample. The
time measured for each sample is denoted by T1,T2...Tn. The
measurement is carried out using external server which polls the DUT
using automated scripts which measures the MAC counter value with
timestamp.
Flush rate = (T1+T2+..Tn)/N
Relearning rate = (T1+T2+..Tn)/N
4.4. MAC Flush-Remote Link Failure
Objective:
Measure the time taken to flush the remote MAC learned in DUT due to
remote link failure and relearning it.
Topology : Topology 1
Procedure:
confirm the DUT is up and running with PBB-EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Bring down the link between SHPE3 and traffic generator.
Measure the time taken to flush the DUT PBB-EVPN MAC table. The DUT
and MHPE2 are running SA mode.
Bring up the link which was made Down(the link between SHPE3 and
traffic generator).
Measure time taken by the DUT to relearn these X MAC
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Measurement :
Measure the time taken to flush X remote MAC from PBB-EVPN MAC table
of the DUT. Measure the time taken to relearn these X MAC in DUT.
The test is repeated for N times and the values are collected. The
flush rate is calculated by averaging the values obtained by N
samples. N is an arbitrary number to get a sufficient sample. The
time measured for each sample is denoted by T1,T2...Tn. The
measurement is carried out using external server which polls the DUT
using automated scripts which measures the MAC counter value with
timestamp.
Flush rate = (T1+T2+..Tn)/N
Relearning rate = (T1+T2+..Tn)/N
4.5. MAC Aging
Objective:
Measure the MAC Aging time.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from CE using traffic generator for one vlan.
Ensure these X MAC addresses are learned in DUT.
Then stop the traffic.
Ensure the DUT and other devices in the test are using the default
timers for aging.
Measure the time taken to flush X MAC from DUT PBB-EVPN MAC table due
to aging.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken to flush X MAC addresses due to aging. The
test is repeated for N times and the values are collected. The aging
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is calculated averaging the values obtained by N samples. N is an
arbitrary number to get a sufficient sample. The time measured for
each sample is denoted by T1,T2...Tn. The measurement is carried out
using external server which polls the DUT using automated scripts
which measures the MAC counter value with timestamp.
Aging time for X MAC in sec = (T1+T2+..Tn)/N
4.6. Remote MAC Aging.
Objective:
Measure the remote MAC Aging time.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Ensure these X MAC addresses are learned in DUT.
Then stop the traffic.
Ensure the DUT and other devices in the test are using the default
timers for aging.
Measure the time taken to flush X MAC from DUT PBB-EVPN MAC table due
to aging.
The DUT and MHPE2 are running SA mode.
Measurement :
Measure the time taken to flush X remote MAC learned in DUT EVPN MAC
table due to aging. The test is repeated for N times and the values
are collected. The aging is calculated by averaging the values
obtained by N samples. N is an arbitrary number to get a sufficient
sample. The time measured for each sample is denoted by T1,T2...Tn.
The measurement is carried out using external server which polls the
DUT using automated scripts which measures the MAC counter value with
timestamp.
Aging time for X MAC in sec = (T1+T2+..Tn)/N
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4.7. Local and Remote MAC Learning
Objective:
Measure the time taken to learn both local and remote MAC.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Send X frames with X different source and destination MAC addresses
to DUT from SHPE3 using traffic generator for one vlan.
Send X frames with different source and destination MAC addresses
from traffic generator connected to CE for one vlan.
The source and destination addresses of flows must be complimentary
to have unicast flows.
Measure the time taken by the DUT to learn 2X in PBB-EVPN MAC table.
DUT and MHPE2 are running in SA mode.
Measurement :
Measure the time taken to learn 2X MAC addresses in DUT PBB-EVPN MAC
table. The test is repeated for N times and the values are
collected. The MAC learning time is calculated by averaging the
values obtained by N samples. N is an arbitrary number to get a
sufficient sample. The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp.
MAC learning rate = (T1+T2+..Tn)/N
4.8. High Availability
Objective:
Measure traffic loss during routing engine failover.
Topology : Topology 1
Procedure:
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Confirm the DUT is up and running with PBB-EVPN.
Send X frames from CE to DUT from traffic generator with X different
source and destination MAC addresses.
Send X frames from traffic generator to SHPE3 with X different source
and destination MAC addresses, so that 2X MAC address will be learned
in the DUT.
There is a bi directional traffic flow with X pps in each direction.
Ensure the DUT learn 2X MAC.
Then do a routing engine fail-over.
Measurement :
The expectation of the test is 0 traffic loss with no change in the
DF role. DUT should not withdraw any routes.But in cases where the
DUT is not property synchronised between master and standby, due to
that packet loss are observed. In that scenario the packet loss is
measured. The test is repeated for N times and the values are
collected. The packet loss is calculated by averaging the values
obtained by N samples. N is an arbitrary number to get a sufficient
sample. The time measured for each sample is denoted by T1,T2...Tn.
The measurement is carried out using external server which polls the
DUT using automated scripts to ensure the DUT learned 2X MAC. The
packet drop is measured using traffic generator.
Packet loss in sec with 2X MAC addresses = (T1+T2+..Tn)/N
4.9. Scale
Objective:
Measure the scale limit of DUT for PBB-EVPN.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
The DUT,MHPE2 and SHPE3 are scaled to N PBB-EVI.
Ensure routes received from MHPE2 and SHPE3 for N PBB-EVI in the DUT.
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Then increment the scale of N by 5% of N till the limit is reached.
The limit is where the DUT cant learn any EVPN routes from its peers.
Measurement :
There should not be any loss of route types 2,3 and 4 in DUT. DUT
must relearn all type 2, 3 and 4 from remote routers. The DUT must
be subjected to various values of N to find the optimal scale limit.
The scope of the test is find out the maximum EVPN instance that a
DUT can hold. The measurement is carried out using external server
which polls the DUT using automated scripts to find the scale limit
of PBB-EVPN instances.
4.10. Scale Convergence
Objective:
To measure the convergence time of DUT when the DUT is scaled with
EVPN instance along with traffic.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Scale N PBB-EVIs in DUT,SHPE3 and MHPE2.
Send F frames to DUT from CE using traffic generator with X different
source and destination MAC addresses for N PBB-EVI's.
Send F frames from traffic generator to SHPE3 with X different source
and destination MAC addresses.
There will be 2X number of MAC addresses will be learned in DUT PBB-
EVPN MAC table.
There is a bi directional traffic flow with F pps in each direction.
Then clear the BGP neighbours in the DUT.
Once the BGP session is in established state in DUT.
Measure the time taken to learn 2X MAC address in DUT MAC table.
Measurement :
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The DUT must learn 2X MAC addresses. Measure the time taken to learn
2X MAC in DUT. The test is repeated for N times and the values are
collected. The convergence time is calculated by averaging the
values obtained by N samples. N is an arbitrary number to get a
sufficient sample.The time measured for each sample is denoted by
T1,T2...Tn. The measurement is carried out using external server
which polls the DUT using automated scripts which measures the MAC
counter value with timestamp.
Time taken to learn 2X MAC in DUT = (T1+T2+..Tn)/N
4.11. Soak Test
Objective:
To measure the stability of the DUT in a scaled environment with
traffic.
Topology : Topology 1
Procedure:
Confirm the DUT is up and running with PBB-EVPN.
Scale N PBB-EVI's in DUT,SHPE3 and MHPE2.Send F frames to DUT from CE
using traffic generator with different X source and destination MAC
addresses for N EVI's.
Send F frames from traffic generator to SHPE3 with X different source
and destination MAC addresses.
There will be 2X number of MAC addresses will be learned in DUT PBB-
EVPN MAC table.
There is a bi directional traffic flow with F pps in each direction.
The DUT must run with traffic for 24 hours.
Every hour check for memory leak in PBB-EVPN process,CPU usage and
crashes in DUT.
Measurement :
Take the hourly reading of CPU, process memory. There should not be
any memory leak, crashes, CPU spikes. The CPU spike is determined as
the sudden increase of CPU usage to 100 percent compared to the
average usage. The average value vary from device to device. Memory
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leak is determined as the increase of memory usage with respect to
time. The expectation is under steady state the memory usage for
PBB-EVPN process should not increase with respect to time. The
measurement is carried out using external server which polls the DUT
using automated scripts which captures the CPU usage and process
memory.
5. Acknowledgments
We would like to thank Fioccola Giuseppe of Telecom Italia reviewing
our draft and commenting it. We would like to thank Sarah Banks for
guiding and mentoring us. We take the opportunity to thank Al for
reviewing our draft and gave us valuable comments.
6. IANA Considerations
This memo includes no request to IANA.
7. Security Considerations
The benchmarking tests described in this document are limited to the
performance characterisation of controllers in a lab environment with
isolated networks. The benchmarking network topology will be an
independent test setup and MUST NOT be connected to devices that may
forward the test traffic into a production network or misroute
traffic to the test management network. Further, benchmarking is
performed on a "black-box" basis, relying solely on measurements
observable external to the controller. Security features mentioned
in the RFC 7432 will affect the test results. Special capabilities
SHOULD NOT exist in the controller specifically for benchmarking
purposes. Any implications for network security arising from the
controller SHOULD be identical in the lab and in production networks.
8. References
8.1. Normative References
[RFC2544] Bradner, S. and J. McQuaid, "Benchmarking Methodology for
Network Interconnect Devices", RFC 2544,
DOI 10.17487/RFC2544, March 1999,
<https://www.rfc-editor.org/info/rfc2544>.
[RFC2899] Ginoza, S., "Request for Comments Summary RFC Numbers
2800-2899", RFC 2899, DOI 10.17487/RFC2899, May 2001,
<https://www.rfc-editor.org/info/rfc2899>.
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[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
8.2. Informative References
[RFC7432] Sajassi, A., Ed., Aggarwal, R., Bitar, N., Isaac, A.,
Uttaro, J., Drake, J., and W. Henderickx, "BGP MPLS-Based
Ethernet VPN", RFC 7432, DOI 10.17487/RFC7432, February
2015, <https://www.rfc-editor.org/info/rfc7432>.
[RFC7623] Sajassi, A., Ed., Salam, S., Bitar, N., Isaac, A., and W.
Henderickx, "Provider Backbone Bridging Combined with
Ethernet VPN (PBB-EVPN)", RFC 7623, DOI 10.17487/RFC7623,
September 2015, <https://www.rfc-editor.org/info/rfc7623>.
Appendix A. Appendix
Authors' Addresses
Sudhin Jacob (editor)
Independent
Bangalore
India
Phone: +91 8061212543
Email: sudhinjacob@rediffmail.com
Kishore Tiruveedhula
Juniper Networks
10 Technology Park Dr
Westford, MA 01886
USA
Phone: +1 9785898861
Email: kishoret@juniper.net
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