Example for Configuring Single-ended Frame Loss Measurement in VLL Networking
This section provides an example showing how to configure single-ended frame loss measurement in VLL networking.
Networking Requirements
With the increasing popularization and wide application of the Internet, various value-added services such as IPTV, video conferencing, and VoIP services are widely deployed. Link connectivity and network performance determine the Quality of Services (QoS) on bearer networks. Therefore, performance monitoring is especially important for service transmission channels.
As shown in Figure 1, CFM is configured between each CE and PE and between PEs. CCMs are not used to monitor link connectivity, preventing them from using a lot of network bandwidth resources. To provide high-quality video services, providers hope to monitor the unidirectional delay over mobile bearer links in real time, while monitoring link connectivity. Monitoring the unidirectional delay over mobile bearer links allows the providers to respond quickly to video service quality deterioration.
Configuration Roadmap
Configure on-demand single-ended frame loss measurement for a PW between the PEs to periodically collect frame loss statistics.
Configure proactive single-ended frame loss measurement for a PW between the PEs to periodically collect frame loss statistics.
Data Preparation
To complete the configuration, you need the following data:
Configure the ID of an L2VC of a VLL between PE1 and PE2.
Configure the names of the MD and MA between PE1 and PE2 and between CE1 and PE1.
Configure the interval at which LM messages are sent and the number of times when on-demand LM messages are sent.
Procedure
- Configure on-demand single-ended frame loss measurement for a PW between the PEs.
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Configure a VLL connection between PE1 and PE2. The configuration details are not provided here. For details, see the chapter "VLL Configuration" in the HUAWEI NetEngine 8000 F Series Router Configuration Guide - VPN or configuration files in this configuration example.
After completing the configuration, run the display mpls l2vc command on each PE to view information about the VC and AC.
[~PE1] display mpls l2vc total LDP VC : 1 1 up 0 down *client interface : Gigabitethernet0/1/1.1 Administrator PW : no session state : up AC status : up VC state : up Label state : 0 Token state : 0 VC ID : 1001 VC type : GigabitEthernet destination : 2.2.2.2 local VC label : 16 remote VC label : 16 control word : disable remote control word : disable forwarding entry : exist local group ID : 0 remote group ID : 0 local AC OAM State : up local PSN OAM State : up local forwarding state : forwarding local status code : 0x0 remote AC OAM state : up remote PSN OAM state : up remote forwarding state: forwarding remote status code : 0x0 ignore standby state : no BFD for PW : unavailable VCCV State : up manual fault : not set active state : active OAM Protocol : -- OAM Status : -- OAM Fault Type : -- PW APS ID : -- PW APS Status : -- TTL Value : 1 link state : up local VC MTU : 1500 remote VC MTU : 1500 local VCCV : alert ttl lsp-ping bfd remote VCCV : alert ttl lsp-ping bfd tunnel policy name : -- traffic behavior name : -- PW template name : -- primary or secondary : primary load balance type : flow Access-port : false Switchover Flag : false VC tunnel info : 1 tunnels NO.0 TNL type : ldp , TNL ID : 0x0000000001004c4e42 create time : 4 days, 15 hours, 59 minutes, 12 seconds up time : 0 days, 15 hours, 23 minutes, 17 seconds last change time : 0 days, 15 hours, 23 minutes, 17 seconds VC last up time : 2012/07/24 09:37:33 VC total up time : 4 days, 15 hours, 57 minutes, 50 seconds CKey : 1 NKey : 436207716 PW redundancy mode : frr AdminPw interface : -- AdminPw link state : -- Forward state : send inactive, receive inactive Diffserv Mode : uniform Service Class : -- Color : -- DomainId : -- Domain Name : --
Configure basic GigabitEthernet CFM functions and specify the MEP type as inward.
Configure basic GigabitEthernet CFM functions on each PE. Specify the GigabitEthernet CFM protocol in the version of IEEE Standard 802.1ag-2007. Create an MD named md1 and an MA named ma1, and bind the MA to the VLL.
# 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 mpls l2vc 1001 tagged [*PE1-md-md1-ma-ma1] mep mep-id 1 interface gigabitethernet0/1/1.1 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 mpls l2vc 1001 tagged [*PE2-md-md1-ma-ma1] mep mep-id 2 interface gigabitethernet0/1/1.1 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 LMM reception function on PE2.
# Configure PE2.
[~PE2-md-md1-ma-ma1] loss-measure single-ended receive test-id 1 [*PE2-md-md1-ma-ma1] commit [~PE2-md-md1-ma-ma1] quit [~PE2-md-md1] quit
Enable on-demand single-ended frame loss measurement for a PW.
# Configure PE1.
[~PE1-md-md1-ma-ma1] loss-measure single-ended 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 PE1 to view single-ended frame loss statistics.
[~PE1] display y1731 statistic-type single-loss Latest single-ended loss statistics of test-id 1: -------------------------------------------------------------------------------- Index Local-loss Local-loss ratio Remote-loss Remote-loss ratio -------------------------------------------------------------------------------- 1 0 0.0000% 0 0.0000% 2 0 0.0000% 0 0.0000% 3 0 0.0000% 0 0.0000% 4 0 0.0000% 0 0.0000% 5 0 0.0000% 0 0.0000% 6 0 0.0000% 0 0.0000% 7 0 0.0000% 0 0.0000% -------------------------------------------------------------------------------- Average Local-loss : 0 Average Local-loss Ratio : 0.0000% Maximum Local-loss : 0 Maximum Local-loss Ratio : 0.0000% Minimum Local-loss : 0 Minimum Local-loss Ratio : 0.0000% Average Remote-loss : 0 Average Remote-loss Ratio : 0.0000% Maximum Remote-loss : 0 Maximum Remote-loss Ratio : 0.0000% Minimum Remote-loss : 0 Minimum Remote-loss Ratio : 0.0000%
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- Configure proactive single-ended frame loss measurement for a PW.
Proactive single-ended frame loss measurement can be configured to continuously monitor the performance of a PW.
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] 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
Configure the LMM reception function on PE1.
# Configure PE1.
[~PE1] cfm md md1 [*PE1-md-md1] ma ma1 [*PE1-md-md1-ma-ma1] loss-measure single-ended receive test-id 2 [*PE1-md-md1-ma-ma1] quit [*PE1-md-md1] quit [*PE1] commit
Enable proactive single-ended frame loss measurement.
# Configure PE2.
[~PE2] cfm md md1 [*PE2-md-md1] ma ma1 [*PE2-md-md-ma-ma1] loss-measure single-ended 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 single-ended frame loss statistics.
[~PE2] display y1731 statistic-type single-loss Latest single-ended loss statistics of test-id 2: -------------------------------------------------------------------------------- Index Local-loss Local-loss ratio Remote-loss Remote-loss ratio -------------------------------------------------------------------------------- 1 0 0.0000% 0 0.0000% 2 0 0.0000% 0 0.0000% 3 0 0.0000% 0 0.0000% 4 0 0.0000% 0 0.0000% 5 0 0.0000% 0 0.0000% 6 0 0.0000% 0 0.0000% 7 0 0.0000% 0 0.0000% 8 0 0.0000% 0 0.0000% 9 0 0.0000% 0 0.0000% 10 0 0.0000% 0 0.0000% 11 0 0.0000% 0 0.0000% 12 0 0.0000% 0 0.0000% 13 0 0.0000% 0 0.0000% 14 0 0.0000% 0 0.0000% 15 0 0.0000% 0 0.0000% 16 0 0.0000% 0 0.0000% 17 0 0.0000% 0 0.0000% -------------------------------------------------------------------------------- Average Local-loss : 0 Average Local-loss Ratio : 0.0000% Maximum Local-loss : 0 Maximum Local-loss Ratio : 0.0000% Minimum Local-loss : 0 Minimum Local-loss Ratio : 0.0000% Average Remote-loss : 0 Average Remote-loss Ratio : 0.0000% Maximum Remote-loss : 0 Maximum Remote-loss Ratio : 0.0000% Minimum Remote-loss : 0 Minimum Remote-loss Ratio : 0.0000%
Configuration Files
PE1 configuration file
# sysname PE1 # cfm enable # mpls lsr-id 1.1.1.1 mpls # mpls l2vpn # mpls ldp # interface GigabitEthernet0/1/1.1 vlan-type dot1q 1 mpls l2vc 2.2.2.2 1001 # interface GigabitEthernet0/1/2 undo shutdown ip address 192.168.1.2 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip address 1.1.1.1 255.255.255.0 # ospf 1 area 0.0.0.0 network 1.1.1.1 0.0.0.0 network 192.168.1.0 0.0.0.255 # cfm md md1 ma ma1 map mpls l2vc 1001 tagged mep mep-id 1 interface GigabitEthernet0/1/1.1 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 loss-measure single-ended receive test-id 2 # return
PE2 configuration file
# sysname PE2 # cfm enable # mpls lsr-id 2.2.2.2 mpls # mpls l2vpn # mpls ldp # interface GigabitEthernet0/1/1.1 vlan-type dot1q 1 mpls l2vc 1.1.1.1 1001 # interface GigabitEthernet0/1/2 undo shutdown ip address 192.168.1.1 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip address 2.2.2.2 255.255.255.0 # ospf 1 area 0.0.0.0 network 2.2.2.2 0.0.0.0 network 192.168.1.0 0.0.0.255 # cfm md md1 ma ma1 map mpls l2vc 1001 tagged mep mep-id 2 interface GigabitEthernet0/1/1.1 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 loss-measure single-ended receive test-id 1 test-id 2 mep 2 remote-mep 1 loss-measure single-ended continual send test-id 2 interval 30000 # return