cfd linktrace
Use cfd linktrace to find the path between the source MEP and target MP, which is achieved through the transmission of LTMs between the two and detection of the responding LTRs.
Syntax
cfd linktrace service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ ttl ttl-value ] [ hw-only ]
Views
Any view
Predefined user roles
network-admin
Parameters
service-instance instance-id: Specifies the service instance ID in the range of 1 to 32767.
mep mep-id: Specifies the ID of the source MEP, in the range of 1 to 8191.
target-mac mac-address: Specifies the destination MAC address, in the format of H-H-H.
target-map target-mep-id: Specifies the ID of the destination MEP, in the range of 1 to 8191.
ttl ttl-value: Specifies the time to live value in the range of 1 to 255 and defaulting to 64.
hw-only: Sets the hw-only bits of the LTMs sent. If this keyword is specified, the MIP does not flood LTM messages that have an unknown destination MAC address.
Examples
# Identify the path between source MEP 1101 and target MEP 2001 in service instance 1.
<Sysname> cfd linktrace service-instance 1 mep 1101 target-mep 2001 Linktrace to MEP 2001 with the sequence number 1101-43361: MAC address TTL Last MAC Relay action 0010-fc00-6512 63 0010-fc00-6500 Hit
Table 8: Command output
Field | Description |
|---|---|
Linktrace to MEP 2001 with the sequence number 1101-43361 | Linktrace to target MEP 2001 with the sequence number 1101-43361. |
MAC address | Source MAC address in the LTR messages. |
TTL | TTL value when the LTM passes the device. |
Last MAC | MAC address of the last-hop device the LTM passes. |
Relay action | Indicates whether the forwarding device found the destination MAC address in its MAC address table. When the standard version (IEEE 802.1ag) of CFD is used:
|
Related commands
cfd linktrace auto-detection
display cfd linktrace-reply