Configuring the Virtual Chassis Operations to Trace
By default, the router or switch logs only important events. You can specify which operations to trace for a Virtual Chassis by including specific tracing flags when you configure tracing. Table 1 describes the flags that you can include.
Table 1: Tracing Flags for Virtual Chassis
Flag | Description |
|---|---|
all | Trace all operations. |
auto-configuration | Trace Virtual Chassis ports that have been automatically configured. |
csn | Trace Virtual Chassis complete sequence number (CSN) packets. |
error | Trace Virtual Chassis errored packets. |
graceful-restart | Trace Virtual Chassis graceful restart events. |
hello | Trace Virtual Chassis hello packets. |
krt | Trace Virtual Chassis kernel routing table (KRT) events. |
lsp | Trace Virtual Chassis link-state packets. |
lsp-generation | Trace Virtual Chassis link-state packet generation. |
me | Trace Virtual Chassis mastership election (ME) events. |
normal | Trace normal events. |
packets | Trace Virtual Chassis packets. |
parse | Trace reading of the configuration. |
psn | Trace partial sequence number (PSN) packets. |
route | Trace Virtual Chassis routing information. |
spf | Trace Virtual Chassis shortest-path-first (SPF) events. |
state | Trace Virtual Chassis state transitions. |
task | Trace Virtual Chassis task operations. |
To configure the flags for the Virtual Chassis operations to be logged:
- Specify the tracing flag that represents the operation
you want to trace.[edit virtual-chassis]user@host# set traceoptions flag flag
- (Optional) Specify one or more of the following additional
tracing options for the specified flag:
- To generate detailed trace output, use the detail option.
- To disable a particular flag, use the disable option.
- To trace received packets, use the receive option.
- To trace transmitted packets, use the send option.
For example, to generate detailed trace output for Virtual Chassis mastership election events in received packets:
[edit virtual-chassis]user@host# set traceoptions flag me detail receive
