H3C Technologies H3C S7500E Series Switches - Manual (Page 172)

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Follow these steps to specify the IS-IS hello multiplier:
To do… Use the command… Remarks
Enter system view system-view ––
Enter interface view
interface interface-type
interface-number
––
Specify the number of hello packets a
neighbor must miss before declaring the
router is down
isis timer holding-multiplier value
[ level-1 | level-2 ]
Optional
3 by default
On a broadcast link, Level-1 and Level-2 hello packets are advertised separately and therefore you
need to set a hello multiplier for each level. On a P2P link, Level-1 and Level-2 hello packets are
advertised in P2P hello packets, and you need not specify Level-1 or Level-2.
Configuring a DIS Priority for an Interface
On an IS-IS broadcast network, a router should be elected as the DIS at a routing level. You can
specify a DIS priority at a level for an interface. The greater the interface’s priority is, the more likely it
becomes the DIS. If multiple routers in the broadcast network have the same highest DIS priority, the
router with the highest MAC address becomes the DIS.
Follow these steps to specify a DIS priority for an interface:
To do… Use the command… Remarks
Enter system view system-view ––
Enter interface view
interface interface-type
interface-number
––
Specify a DIS priority for the
interface
isis dis-priority value [ level-1 |
level-2 ]
Optional
64 by default
Disabling an Interface from Sending/Receiving IS-IS Packets
After disabled from sending and receiving hello packets, an interface cannot form any neighbor
relationship, but can advertise directly connected networks in LSPs through other interfaces. By doing
so, you can save bandwidth and CPU resources while ensuring other routers know networks directly
connected to the interface.
Follow these steps to disable an interface from sending and receiving IS-IS packets: