Trigger a Layer 2 Tracetree

Use this procedure to trigger a Layer 2 tracetree. Layer 2 tracetree allows a user to trigger a multicast LTM message by specifying the B-VLAN and I-SID. The command allows the user to view a multicast tree on the SPBM B-VLAN from the source node to the destination nodes for a particular I-SID.

Note

This command is supported on SPBM B-VLANs only, not C-VLANs.

Before you begin

On the source and destination nodes, you must configure a CFM MD, MA, and MEP.
Enable the MEP.
Assign a nodal MEP to the B-VLAN.

Procedure

Trigger a Layer 2 tracetree:

l2 tracetree {<1-4059> <1–16777215> [routernodename WORD<0–255> | <1-4059> <1–16777215>] [mac <0x00:0x00:0x00:0x00:0x00:0x00>}] [priority <0–7>] [source-mode <nodal|smltVirtual>] [ttl—value <1–255>]

Example

Switch:1#l2 tracetree 500 1
Switch:1# l2 tracetree 500 1   

Please wait for l2tracetree to complete or press any key to abort


l2tracetree to 53:55:10:00:00:01, vlan 500 i-sid 1 nickname 5.55.10
hops 64 
1   Switch-PETER4        00:15:9b:11:33:df -> Switch-MONTI0        00:14:0d:a2:b3:df
2   Switch-MONTI0        00:14:0d:a2:b3:df -> Switch-LEE2          00:15:e8:b8:a3:df

Variable Definitions

The following table defines parameters for the l2 tracetree command.


Variable	Value
{ `<1-4059><1–16777215> routernodename WORD<0–255> \|<1-4059><1–16777215> mac <0x00:0x00:0x00:0x00:0x00:0x00>`}	`<1-4059>` — Specifies the VLAN ID. <1–16777215> — Specifies the I-SID. WORD<0–255> — Specifies the Router Node Name. <0x00:0x00:0x00:0x00:0x00:0x00> — Specifies the MAC address.
ttl-value `<1–255>`	Specifies the TTL value. The default is 64.
priority `<0–7>`	Specifies the priority value. The default is 7.
source-mode`<nodal\|smltVirtual>`	Specifies the source mode. The default is nodal.