Example for Configuring One-way Frame Delay Measurement in BD EVPN Networking
This section provides an example for configuring one-way frame delay measurement in BD EVPN networking.
Networking Requirements
As networks rapidly develop and applications diversify, various value-added services, such as IPTV, video conferencing, and VoIP, are widely deployed. A link connectivity fault or network performance deterioration directly affects services on a live network. Therefore, performance monitoring is especially important for service transport.
As shown in Figure 1, PE1 and PE2 are connected through an EVPN, and CE1 and CE2 are connected to the EVPN through a BD. CFM is configured between each PE and its attached CE and between PEs to monitor link connectivity. To provide high-quality video services, a carrier expects to monitor one-way delay on mobile transport links in real time while monitoring link connectivity so that they can promptly respond to video service quality deterioration.
Configuration Roadmap
Configure on-demand one-way frame delay measurement for the service path between PEs' AC interfaces to collect frame delay statistics on demand.
Configure proactive one-way frame delay measurement for the service path between PEs' AC interfaces to continuously collect frame delay statistics.
Data Preparation
To complete the configuration, you need the following data:
EVPN instance name evpna, RT value, and RD value on each PE
BD ID
MD name, MA name, and MEP ID for configuring basic CFM functions
Interval at which one-way delay measurement (1DM) messages are sent and the number of times that a 1DM message is sent in on-demand one-way frame delay measurement
Procedure
- Configure on-demand one-way frame delay measurement for the service path between PEs' AC interfaces.
Configure access to an EVPN through a BD.
An EVPN is configured between PE1 and PE2. CE1 and CE2 access the EVPN network through a BD. For details, see the Configuring BD-EVPN Functions 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 BD.
# 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 bridge-domain 10 [*PE1-md-md1-ma-ma1] mep mep-id 1 interface gigabitethernet0/1/1.1 vlan 2 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 bridge-domain 10 [*PE2-md-md1-ma-ma1] mep mep-id 2 interface gigabitethernet0/1/1.1 vlan 2 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 PE2 to receive 1DM messages.
# Configure PE2.
[~PE2-md-md1-ma-ma1] delay-measure one-way receive test-id 1 [*PE2-md-md1-ma-ma1] commit
Enable on-demand one-way frame delay measurement for the service path between PEs' AC interfaces on the EVPN.
# Configure PE1.
[~PE1-md-md1-ma-ma1] delay-measure one-way send test-id 1 interval 1000 count 20 [*PE1-md-md1-ma-ma1] quit [*PE1-md-md1] quit
Verify the configuration.
Run the display y1731 statistic-type command on PE2 to check statistics about one-way frame delay.
[~PE2] display y1731 statistic-type oneway-delay Latest one-way delay statistics of test-id 1: -------------------------------------------------------------------------------- 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
- Configure proactive one-way frame delay measurement for the service path between PEs' AC interfaces.
To continuously collect frame delay statistics on the service path between PEs' AC interfaces, configure proactive one-way frame delay measurement.
Configure PE1 to receive 1DM messages.
# Configure PE1.
[~PE1] cfm md md1 [*PE1-md-md1] ma ma1 [*PE1-md-md1-ma-ma1] test-id 3 mep 1 [*PE1-md-md1-ma-ma1] delay-measure one-way continual receive test-id 3 [*PE1-md-md1-ma-ma1] quit [*PE1-md-md1] quit [*PE1] commit
Enable proactive one-way frame delay measurement in the BD.
# Configure PE2.
[~PE2] cfm md md1 [*PE2-md-md1] ma ma1 [*PE2-md-md1-ma-ma1] test-id 3 mep 2 remote-mep 1 [*PE2-md-md1-ma-ma1] delay-measure one-way continual send test-id 3 interval 1000 [*PE2-md-md1-ma-ma1] quit [*PE2-md-md1] quit [*PE2] commit
Verify the configuration.
Run the display y1731 statistic-type command on PE1 to check statistics about one-way frame delay.
[~PE1] display y1731 statistic-type oneway-delay Latest one-way delay statistics of test-id 3: -------------------------------------------------------------------------------- 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
PE1 configuration file
# sysname PE1 # cfm enable # evpn vpn-instance evpna bd-mode route-distinguisher 100:1 vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity # mpls lsr-id 1.1.1.1 # mpls # bridge-domain 10 evpn binding vpn-instance evpna # mpls ldp # ipv4-family # interface GigabitEthernet0/1/1 undo shutdown # interface GigabitEthernet0/1/1.1 mode l2 encapsulation dot1q vid 2 rewrite pop single bridge-domain 10 # 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 bridge-domain 10 mep mep-id 1 interface GigabitEthernet0/1/1.1 vlan 2 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 3 mep 1 delay-measure one-way continual receive test-id 3 # 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 # bridge-domain 10 evpn binding vpn-instance evpna # mpls ldp # ipv4-family # interface GigabitEthernet0/1/1 undo shutdown # interface GigabitEthernet0/1/1.1 mode l2 encapsulation dot1q vid 2 rewrite pop single bridge-domain 10 # 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 bridge-domain 10 mep mep-id 2 interface GigabitEthernet0/1/1.1 vlan 2 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 one-way receive test-id 1 test-id 3 mep 2 remote-mep 1 delay-measure one-way continual send test-id 3 interval 1000 # return