H3C Technologies H3C S12500-X Series Switches - Manual (Page 24)

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If Graceful Restart is enabled, the adjacency hold time equals the EVI IS-IS hello interval multiplied by the
holding-multiplier or the restart interval, whichever is greater. (For a DED, the hello interval is one-third of
the hello interval set with the evi isis timer hello command.)
To configure Graceful Restart for an EVI IS-IS process:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter EVI IS-IS process view. evi-isis process-id N/A
3. Enable Graceful Restart. graceful-restart
By default, EVI IS-IS Graceful Restart is
disabled.
4. Configure the restart interval.
graceful-restart interval
interval-value
The default restart interval is 300
seconds.
If the restarting EVI process fails to
complete re-establishing the adjacency
with the peer EVI process, the EVI link
goes down.
Increasing the maximum number of MAC entries in an LSP for
an EVI IS-IS process
An EVI IS-IS process advertises all local MAC reachability information in one LSP. By default, an LSP can
convey up to 55 x 2 10 MAC address entries.
To increase this number to accommodate all local MAC address entries, create virtual systems. Each
virtual system represents an increase of 55 x 2
10 MAC address entries. If n virtual systems are created, the
maximum number of MAC address entries in an LSP is (n+1) x 55 x 2 10 .
To configure EVI IS-IS virtual system:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter EVI IS-IS process view. evi-isis process-id N/A
3. Create an EVI IS-IS virtual
system.
virtual-system systemid
By default, no EVI IS-IS virtual systems
are created.
IMPORTANT:
The virtual system ID must be unique in
the EVI network.
Enabling EVI flooding for all destination-unknown
frames
By default, the device floods unknown unicast and multicast frames only to internal interfaces. EVI
flooding enables the device to flood all destination-unknown frames to an EVI tunnel interface.