Trigger Linktrace (LTM)
Use the following procedure to trigger a linktrace.
The Linktrace Message is often compared to traceroute. An MEP transmits the Linktrace Message packet to a maintenance endpoint with intermediate points responding to indicate the path of the traffic within a domain for the purpose of fault isolation. The packet specifies the target MAC address of an MP, which is the SPBM system ID or the virtual SMLT MAC. MPs on the path to the target address respond with an LTR.
Before you begin
You must have a MEP that is associated with a VLAN.
Procedure
linktrace WORD<0–22> WORD<0–22> <1–8191> <0x00:0x00:0x00:0x00:0x00:0x00> [detail] [priority <0–7>] [source-mode <nodal|smltVirtual>] [ttl-value <1–255>]
Example
Switch:1# linktrace md1 4001 13 00:bb:00:00:14:00 priority 7
Please wait for LTM to complete or press any key to abort Received LTRs: SeqNum: 10575 MD: md1 MA:4001 MepId: 13 Priority: 7 -------------------------------------------------------------- TTL SRC MAC FWDYES TERMMEP RELAY ACTION --- ------------------ ------ -------- ---------------------- 63 00:bb:00:00:10:00 true false Fdb 62 00:bb:00:00:14:00 false true Hit
Variable Definitions
The following table defines parameters for the linktrace command.
Variable |
Value |
---|---|
WORD<0–22> |
The first parameter, specifies the MD name. |
WORD<0–22> |
The second parameter, specifies the MA name. |
<1–8191> |
Specifies the MEP ID. |
<0x00:0x00:0x00:0x00:0x00:0x00> |
Specifies the target MAC address to reach the MEP. |
detail |
Displays linktrace result details. |
priority <0–7> |
Specifies the priority. The default is 7. |
source-mode{nodal | smltVirtual}]| Note:
Exception: smltVirtual is not supported on 5320 Series. |
Specifies the source mode:
The default is nodal. |
ttl-value <1–255> |
Specifies the Time-to-Live value. The default is 64. |