Example for Configuring Two-Way Frame Delay Measurement in a VLAN
This example describes how to configure two-way frame delay measurement in a virtual local area network (VLAN) on an E2E network.
Networking Requirements
As networks continue to develop and diversify, various value-added services such as IPTV, video conferencing, and Voice over Internet Protocol (VoIP) are becoming increasingly popular. The performance monitoring function can be used to check the performance of links that transmit services.
On the network shown in Figure 1, CFM is configured to monitor the connectivity of links between customer edges (CEs). Because more users are demanding video services, the carrier also wants to implement two-way frame delay measurement as a response to video service quality deterioration.
Configuration Roadmap
Configure on-demand two-way frame delay measurement between CEs.
Configure proactive two-way frame delay measurement between CEs.
Data Preparation
To complete the configuration, you need the following data:
ID of a VLAN to which CE interfaces belong
Names of the MD and MA on CE1 and CE2
Interval between DMMs and number of detection times in on-demand OAM mode
Procedure
- Configure on-demand two-way frame delay measurement for links between CEs.
Configure basic Ethernet CFM functions, including outward-facing MEPs.
On each CE, configure IEEE Std 802.1ag-2007 CFM, create an MD named md3 and an MA named ma3, and bind the MA to a VLAN.
# Configure CE1.
<HUAWEI> system-view [~HUAWEI] sysname CE1 [*HUAWEI] commit [~CE1] vlan 2 [*CE1] interface gigabitethernet0/1/1 [*CE1-GigabitEthernet0/1/1] portswitch [*CE1-GigabitEthernet0/1/1] port link-type trunk [*CE1-GigabitEthernet0/1/1] port trunk allow-pass vlan 2 [*CE1-GigabitEthernet0/1/1] quit [*CE1] cfm enable [*CE1] cfm md md3 [*CE1-md-md3] ma ma3 [*CE1-md-md3-ma-ma3] map vlan 2 [*CE1-md-md3-ma-ma3] mep mep-id 3 interface gigabitethernet0/1/1 outward [*CE1-md-md3-ma-ma3] mep ccm-send mep-id 3 enable [*CE1-md-md3-ma-ma3] remote-mep mep-id 4 [*CE1-md-md3-ma-ma3] remote-mep ccm-receive mep-id 4 enable [*CE1-md-md3-ma-ma3] test-id 1 mep 3 remote-mep 4 [*CE1] commit
# Configure CE2.
<HUAWEI> system-view [~HUAWEI] sysname CE2 [*HUAWEI] commit [~CE2] vlan 2 [*CE2] interface gigabitethernet0/1/1 [*CE2-GigabitEthernet0/1/1]portswitch [*CE2-GigabitEthernet0/1/1]port link-type trunk [*CE2-GigabitEthernet0/1/1]port trunk allow-pass vlan 2 [*CE2-GigabitEthernet0/1/1]quit [*CE2] cfm enable [*CE2] cfm md md3 [*CE2-md-md3] ma ma3 [*CE2-md-md3-ma-ma3] map vlan 2 [*CE2-md-md3-ma-ma3] mep mep-id 4 interface gigabitethernet0/1/1 outward [*CE2-md-md3-ma-ma3] mep ccm-send mep-id 4 enable [*CE2-md-md3-ma-ma3] remote-mep mep-id 3 [*CE2-md-md3-ma-ma3] remote-mep ccm-receive mep-id 3 enable [*CE2-md-md3-ma-ma3] test-id 1 mep 4 [*CE2] commit
Enable CE2 to receive DMMs.
# Configure CE2.
[~CE2] cfm md md3 [*CE2-md-md3] ma ma3 [*CE2-md-md3-ma-ma3] delay-measure two-way receive test-id 1 [*CE2-md-md3-ma-ma3] quit [*CE2-md-md3] quit [*CE2] commit
Enable on-demand two-way frame delay measurement.
# Configure CE1.
[~CE1] cfm md md3 [*CE1-md-md3] ma ma3 [*CE1-md-md3-ma-ma3] delay-measure two-way send test-id 1 interval 1000 count 20 [*CE1-md-md3-ma-ma3] quit [*CE1-md-md3] quit [*CE1] commit
Verify the configuration.
# After completing the configuration, run the display y1731 statistic-type twoway-delay command to view actual on-demand two-way frame delay measurements on CE1.
<CE1> display y1731 statistic-type twoway-delay Latest two-way delay statistics of test-id 1: -------------------------------------------------------------------------------- Index Delay(usec) Delay variation(usec) -------------------------------------------------------------------------------- 1 422 - 2 320 102 3 467 147 4 309 158 5 328 19 6 316 12 7 336 20 8 282 54 9 421 139 10 287 134 11 322 35 12 446 124 13 275 171 14 291 16 15 341 50 -------------------------------------------------------------------------------- Average delay(usec) : 344 Average delay variation(usec) : 84 Maximum delay(usec) : 467 Maximum delay variation(usec) : 171 Minimum delay(usec) : 275 Minimum delay variation(usec) : 12
- Configure proactive two-way frame delay measurement for links between CEs.
Proactive two-way frame delay measurement within a specified VLAN allows you to collect link measurement statistics continuously over a long term.
Configure the test instance on CE2.
# Configure CE2.
[~CE2] cfm md md3 [*CE2-md-md3] ma ma3 [*CE2-md-md3-ma-ma3] test-id 2 mep 4 remote-mep 3 [*CE2-md-md3-ma-ma3] quit [*CE2-md-md3] quit [*CE2] commit
Enable CE1 to receive DM messages.
# Configure CE1.
[~CE1] cfm md md3 [*CE1-md-md3] ma ma3 [*CE1-md-md3] test-id 2 mep 3 [*CE1-md-md3-ma-ma3] delay-measure two-way receive test-id 2 [*CE1-md-md3-ma-ma3] quit [*CE1-md-md3] quit [*CE1] commit
Enable proactive two-way frame delay measurement.
# Configure CE2.
[~CE2] cfm md md3 [*CE2-md-md3] ma ma3 [*CE2-md-md3-ma-ma3] delay-measure two-way continual send test-id 2 interval 1000 [*CE2-md-md3-ma-ma3] quit [*CE2-md-md3] quit [*CE2] commit
Verify the configuration.
# After completing the configuration, run the display y1731 statistic-type twoway-delay command to view actual proactive two-way frame delay measurements on CE2.
<CE1> display y1731 statistic-type twoway-delay Latest two-way delay statistics of test-id 2: -------------------------------------------------------------------------------- Index Delay(usec) Delay variation(usec) -------------------------------------------------------------------------------- 1 181 - 2 356 175 3 166 190 4 180 14 5 162 18 6 160 2 7 177 17 8 149 28 9 190 41 10 185 5 11 230 45 12 221 9 13 184 37 14 415 231 15 187 228 16 235 48 17 184 51 18 184 0 19 168 16 20 185 17 -------------------------------------------------------------------------------- Average delay(usec) : 204 Average delay variation(usec) : 61 Maximum delay(usec) : 415 Maximum delay variation(usec) : 231 Minimum delay(usec) : 149 Minimum delay variation(usec) : 0
Configuration Files
CE1 configuration file
# sysname CE1 # vlan batch 2 # cfm version standard cfm enable # interface GigabitEthernet0/1/1 portswitch undo shutdown port trunk allow-pass vlan 2 # cfm md md3 ma ma3 map vlan 2 mep mep-id 3 interface GigabitEthernet0/1/1 outward mep ccm-send mep-id 3 enable remote-mep mep-id 4 remote-mep ccm-receive mep-id 4 enable test-id 1 mep 3 remote-mep 4 test-id 2 mep 3 delay-measure two-way receive test-id 2 # return
CE2 configuration file
# sysname CE2 # vlan 2 # cfm version standard cfm enable # interface GigabitEthernet0/1/1 portswitch undo shutdown port trunk allow-pass vlan 2 # cfm md md3 ma ma3 map vlan 2 mep mep-id 4 interface GigabitEthernet0/1/1 outward mep ccm-send mep-id 4 enable remote-mep mep-id 3 remote-mep ccm-receive mep-id 3 enable test-id 1 mep 4 delay-measure two-way receive test-id 1 test-id 2 mep 4 remote-mep 3 delay-measure two-way continual send test-id 2 interval 1000 # return