Example for Configuring Two-Way Frame Delay Measurement in EVPN Networking
This section provides an example showing how to configure two-way frame delay measurement in EVPN networking.
Networking Requirements
As shown in Figure 1, connectivity fault management (CFM) is configured between each customer edge (CE) and provider edge (PE) and between PEs. To provide high-quality video services, providers hope to monitor the bidirectional delay over mobile bearer links in real time, while monitoring link connectivity. Monitoring the bidirectional delay over mobile bearer links allows the providers to respond quickly to video service quality deterioration.
Configuration Roadmap
Configure on-demand two-way frame delay measurement to periodically collect statistics about the delay in frame transmission
Configure proactive two-way frame delay measurement to continuously collect statistics about the delay in frame transmission.
Data Preparation
To complete the configuration, you need the following data:
Configure the name of EVPN instance of PE and RT, RD.
Configure the names of the MD and MA between PE1 and PE2 and between CE1 and PE1.
The CE device interface VLAN ID.
Interval at which delay measurement messages (DMMs) are sent and the number of times when on-demand DMMs are sent.
Procedure
- Configure on-demand two-way frame delay measurement.
Configure an EVPN connection.
Configure an EVPN connection between PE1 and PE2. The configuration details are not provided here. For details, see the EVPN Configuration or configuration files in this configuration example.
Configure basic Ethernet CFM functions and specify the MEP type as inward.
Configure basic Ethernet CFM functions on each PE. Specify the Ethernet CFM protocol as IEEE Standard 802.1ag-2007. Create an MD named md1 and an MA named ma1, and bind the MA to the EVPN instance.
# Configure PE1.
<HUAWEI> system-view [~HUAWEI] sysname PE1 [*HUAWEI] commit [~PE1] cfm enable [*PE1] commit [~PE1] cfm md md1 [*PE1-md-md1] ma ma1 [*PE1-md-md1-ma-ma1] map evpn vpn-instance evpna [*PE1-md-md1-ma-ma1] mep mep-id 1 interface gigabitethernet0/1/1 inward [*PE1-md-md1-ma-ma1] mep ccm-send mep-id 1 enable [*PE1-md-md1-ma-ma1] remote-mep mep-id 2 [*PE1-md-md1-ma-ma1] remote-mep ccm-receive mep-id 2 enable [*PE1-md-md1-ma-ma1] test-id 1 mep 1 remote-mep 2 [*PE1-md-md1-ma-ma1] commit
# Configure PE2.
<HUAWEI> system-view [~HUAWEI] sysname PE2 [*HUAWEI] commit [~PE2] cfm enable [*PE2] commit [~PE2] cfm md md1 [*PE2-md-md1] ma ma1 [*PE2-md-md1-ma-ma1] map evpn vpn-instance evpna [*PE2-md-md1-ma-ma1] mep mep-id 2 interface gigabitethernet0/1/1 inward [*PE2-md-md1-ma-ma1] mep ccm-send mep-id 2 enable [*PE2-md-md1-ma-ma1] remote-mep mep-id 1 [*PE2-md-md1-ma-ma1] remote-mep ccm-receive mep-id 1 enable [*PE2-md-md1-ma-ma1] test-id 1 mep 2 [*PE2-md-md1-ma-ma1] commit
Configure the DMM reception function on PE2.
# Configure PE2.
[*PE2-md-md1-ma-ma1] delay-measure two-way receive test-id 1 [*PE2-md-md1-ma-ma1] quit [*PE2-md-md1] quit [*PE2] commit
Enable on-demand two-way frame delay measurement on the EVPN network.
# Configure PE1.
[*PE1-md-md1-ma-ma1] delay-measure two-way send test-id 1 interval 1000 count 20 [*PE1-md-md1-ma-ma1] quit [*PE1-md-md1] quit [*PE1] commit
Verify the configuration.
Run the display y1731 statistic-type command on PE1 to view the statistics about the delay in bidirectional frame transmission.
[~PE1] 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.
Proactive two-way frame delay measurement can be configured to continuously monitor the performance.
Configure the test instance.
# Configure PE1.
[~PE1] cfm md md1 [*PE1-md-md1] ma ma1 [*PE1-md-md1-ma-ma1] test-id 2 mep 1 [*PE1-md-md1-ma-ma1] delay-measure two-way receive test-id 2 [*PE1-md-md1-ma-ma1] quit [*PE1-md-md1] quit [*PE1] commit
# Configure PE2.
[~PE2] cfm md md1 [*PE2-md-md1] ma ma1 [*PE2-md-md1-ma-ma1] test-id 2 mep 2 remote-mep 1 [*PE2-md-md1-ma-ma1] quit [*PE2-md-md1] quit [*PE2] commit
Enable proactive two-way frame delay measurement.
# Configure PE2.
[~PE2] cfm md md1 [*PE2-md-md1] ma ma1 [*PE2-md-md1-ma-ma1] test-id 2 mep 2 remote-mep 1 [*PE2-md-md1-ma-ma1] delay-measure two-way continual send test-id 2 interval 30000 [*PE2-md-md1-ma-ma1] quit [*PE2-md-md1] quit [*PE2] commit
Verify the configuration.
Run the display y1731 statistic-type command on PE2 to view the statistics about the delay in bidirectional frame transmission.
[~PE2] display y1731 statistic-type twoway-delay Latest two-way delay statistics of test-id 2: -------------------------------------------------------------------------------- Index Delay(usec) Delay variation(usec) -------------------------------------------------------------------------------- 1 322 - 2 430 108 -------------------------------------------------------------------------------- Average delay(usec) : 376 Average delay variation(usec) : 108 Maximum delay(usec) : 430 Maximum delay variation(usec) : 108 Minimum delay(usec) : 322 Minimum delay variation(usec) : 108
Configuration file
PE1 configuration file
# sysname PE1 # cfm enable # evpn vpn-instance evpna route-distinguisher 100:1 vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity # mpls lsr-id 1.1.1.1 # mpls # mpls ldp # ipv4-family # interface GigabitEthernet0/1/1 undo shutdown evpn binding vpn-instance evpna # interface GigabitEthernet0/1/2 undo shutdown ip address 10.1.1.1 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip address 1.1.1.1 255.255.255.255 # bgp 100 peer 2.2.2.2 as-number 100 peer 2.2.2.2 connect-interface LoopBack0 # ipv4-family unicast undo synchronization peer 2.2.2.2 enable # l2vpn-family evpn peer 2.2.2.2 enable # ospf 1 area 0.0.0.0 network 1.1.1.1 0.0.0.0 network 10.1.1.0 0.0.0.255 # evpn source-address 1.1.1.1 # cfm md md1 ma ma1 map evpn vpn-instance evpna mep mep-id 1 interface GigabitEthernet0/1/1 inward mep ccm-send mep-id 1 enable remote-mep mep-id 2 remote-mep ccm-receive mep-id 2 enable test-id 1 mep 1 remote-mep 2 test-id 2 mep 1 delay-measure two-way receive test-id 2 # return
PE2 configuration file
# sysname PE2 # cfm enable # evpn vpn-instance evpna route-distinguisher 200:1 vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity # mpls lsr-id 2.2.2.2 # mpls # mpls ldp # ipv4-family # interface GigabitEthernet0/1/1 undo shutdown evpn binding vpn-instance evpna # interface GigabitEthernet0/1/2 undo shutdown ip address 10.2.1.1 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip address 2.2.2.2 255.255.255.255 # bgp 100 peer 1.1.1.1 as-number 100 peer 1.1.1.1 connect-interface LoopBack0 # ipv4-family unicast undo synchronization peer 1.1.1.1 enable # l2vpn-family evpn peer 1.1.1.1 enable # ospf 1 area 0.0.0.0 network 2.2.2.2 0.0.0.0 network 10.2.1.0 0.0.0.255 # evpn source-address 2.2.2.2 # cfm md md1 ma ma1 map evpn vpn-instance evpna mep mep-id 2 interface GigabitEthernet0/1/1 inward mep ccm-send mep-id 2 enable remote-mep mep-id 1 remote-mep ccm-receive mep-id 1 enable test-id 1 mep 2 delay-measure two-way receive test-id 1 test-id 2 mep 2 remote-mep 1 delay-measure two-way continual send test-id 2 interval 30000 # return