H3C S7500X Series Configuration Manual page 23

Step
1. Enter system view.
2. Enter EVI IS-IS
process view.
3. Configure the LSP
refresh interval.
Associating an EVI tunnel interface with a track entry
EVI IS-IS uses a hello mechanism to monitor the connectivity of each EVI link on an EVI tunnel. To
detect the connectivity of a particular EVI link more quickly, you can associate its tunnel interface
with a track entry. The monitoring protocol used in this entry can only be BFD.
EVI IS-IS changes the state of an EVI-Link interface in response to the track entry state, as shown
in Table 1.
Table 1 Action on the monitored EVI-Link in response to the track entry state change
Track entry state
Positive
Negative
NotReady
For more information about configuring a track entry, see Track configuration in High Availability
Configuration Guide.
To associate an EVI tunnel interface with a track entry:
Step
1. Enter system view.
2. Enter EVI tunnel interface
view.
3. Associate a track entry with
the tunnel interface.
Command
system-view
evi-isis process-id
timer lsp-refresh seconds
State of the monitored EVI link
The EVI link is operating correctly.
The EVI link has failed.
The EVI link is not monitored.
This situation occurs when the Track module
or the monitoring module is not ready (for
example, the Track module is restarting or the
monitoring settings are incomplete). In this
situation, EVI cannot obtain information about
the EVI link from the Track module.
Command
system-view
interface tunnel number [ mode
evi ]
evi isis track track-entry-number
17
Remarks
N/A
N/A
The default LSP refresh interval is 900
seconds.
The minimum LSP transmit interval and the
maximum number of LSPs sent at each interval
can affect the actual LSP refresh interval.
To avoid unnecessary age-outs, appropriately
set the LSP refresh interval and the LSP
lifetime.
Action on the EVI-Link
interface
Places the EVI-Link interface in up
state.
Places the EVI-Link interface in
down state.
N/A
Remarks
N/A
N/A
By default, an EVI tunnel interface
is not associated with any track
entry.
You can associate an EVI tunnel
interface with only one track entry.