H3C Technologies H3C S10500 Series Switches - Manual (Page 21)

14
Step Command Remarks
1. Enter system view. system-view N/A
2. Create an EVI IS-IS
process or enter EVI
IS-IS process view.
evi-isis process-id
By default, no EVI IS-IS process is configured.
The process ID you specify must be the same as the
EVI tunnel interface number.
The EVI IS-IS process takes effect after you
configure extended VLANs on the tunnel interface.
Optimizing an EVI IS-IS network
Perform the tasks in this section to optimize an EVI IS-IS network for bandwidth efficiency and high
performance.
Configuring the EVI IS-IS hello interval
EVI edge devices send EVI IS-IS hellos over EVI links to establish and maintain adjacencies and elect a
DED on each EVI link.
Set the hello interval depending on the network convergence requirement and system resources.
• To increase the speed of network convergence, decrease the hello interval.
• To conserve resources, increase the hello interval.
NOTE:
The hello interval of a DED is one-third of the hello interval set with the evi isis timer hello command.
To configure the EVI IS-IS hello interval on an EVI tunnel interface:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter EVI tunnel interface view. interface tunnel number [ mode
evi ]
N/A
3. Configure the EVI IS-IS hello
interval.
evi isis timer hello seconds
The default hello interval is 10
seconds.
If the edge device is a DED, its hello
interval is one-third of the hello interval
set with this command.
Configuring the hello multiplier for calculating the adjacency hold time
Adjacency hold time is the amount of time that the remote edge devices can retain the adjacency with
the local edge device before an adjacency update.
• If Graceful Restart is disabled, the adjacency hold time equals the EVI IS-IS hello interval multiplied
by the hello multiplier.
• If Graceful Restart is enabled, the adjacency hold time equals the greater of the following values:
{
The restart interval.
{
The EVI IS-IS hello interval multiplied by the hello multiplier.