H3C Technologies H3C S12500 Series Switches - Manual (Page 22)

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device and recalculates routes if it does not receive an EVI IS-IS hello packet from the advertising edge
device before the time value expires.
To configure the multiplier for calculating the adjacency hold time 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 multiplier for
calculating the adjacency hold time.
evi-isis timer holding-multiplier
value
The default multiplier is 3.
The maximum adjacency hold
time is 65535 seconds. If this
value is exceeded, the actual
adjacency hold time is set to
65535 seconds.
Configuring the DED priority
The edge devices on an EVI link exchange their DED priority in EVI IS-IS hello packets to elect a DED for
periodic LSDB synchronization. You can use the evi-isis timer csnp command to change the
synchronization interval.
The edge device with higher DED priority is more likely to be elected as the DED. If two edge devices
have the same DED priority, the device with the highest MAC address is elected.
To configure the DED priority of the edge device 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 DED priority. evi-isis ded-priority value The default DED priority is 64.
Configuring the CSNP packet sending interval
This configuration takes effect only on DEDs.
The DEDs in an EVI network regularly send CSNP packets to advertise LSP summaries for LSDB
synchronization.
To configure the CSNP packet sending interval on a DED:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter tunnel interface view. interface tunnel number N/A
3. Configure the CSNP packet
sending interval.
evi-isis timer csnp seconds
By default, a DED sends CSNP
packets every 10 seconds.