Configuring Is-Is Timers - 3Com MSR 50 Series Configuration Manual

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Configuring IS-IS Timers

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Follow these steps to configure a DIS priority for an interface:
To do...
Enter system view
Enter interface view
Specify a DIS priority for the
interface
If multiple routers in the broadcast network have the same highest DIS priority, the
router with the highest MAC address becomes the DIS. This rule applies even all
routers' DIS priority is 0.
Follow these steps to configure the IS-IS timers:
To do...
Enter system view
Enter interface view
Specify the interval between
hello packets
Specify the number of hello
packets; within the time for
receiving the specified hello
packets, if no hello packets
are received on the interface,
the neighbor is considered
dead.
Specify the interval for
sending CSNP packets
Specify the interval for
sending LSP packets
Specify the LSP retransmission
interval on the point-to-point
link
On the broadcast link, you can specify different intervals for Level-1 and Level-2
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hello packets; if no level is specified, the interval applies to both Level-1 and
Level-2 hello packets, but only takes effect on the level of the current process;
if a level is specified, it applies to hello packets at this level. The point-to-point
link does not distinguish between Level-1 and Level-2 hello packets, so you
need not specify a level.
Hello packets are used to establish and maintain neighbor relationships. If no
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hello packets are received from a neighbor within the time for receiving the
specified hello packets, the neighbor is considered dead.
CSNPs are sent by the DIS on a broadcast network for LSDB synchronization. If
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no level is included, the specified CSNP interval applies to both Level-1 and
Level-2 of the current IS-IS process. If a level is specified, it applies to the level.
Tuning and Optimizing IS-IS Network
Use the command...
system-view
interface interface-type
interface-number
isis dis-priority value
[ level-1 | level-2 ]
Use the command...
system-view
interface interface-type
interface-number
isis timer hello seconds
[ level-1 | level-2 ]
isis timer
holding-multiplier value
[ level-1 | level-2 ]
isis timer csnp seconds
[ level-1 | level-2 ]
isis timer lsp time [ count
count ]
isis timer retransmit
seconds
899
Remarks
--
--
Optional
64 by default
Remarks
--
--
Optional
10 seconds by default
Optional
3 by default
Optional
10 seconds by default
Optional
33 milliseconds by default
Optional
5 seconds by default