F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100
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685BConfiguring a DIS priority for an interface
On a broadcast network, ISIS must elect a router 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, 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.
To specify a DIS priority for an interface:
Ste
p
Command
Remarks
380. Enter system view.
system-view N/A
381. Enter interface view.
interface interface-type
interface-number
N/A
382. Specify a DIS priority for the
interface.
isis dis-priority value [ level-1 |
level-2 ]
Optional.
64 by default.
686BDisabling an interface from sending/receiving IS-IS packets
After being 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. This can save
bandwidth and CPU resources, and ensures other routers know networks directly connected to the
interface.
To disable an interface from sending and receiving IS-IS packets:
Ste
p
Command
Remarks
383. Enter system view.
system-view N/A
384. Enter interface view.
interface interface-type
interface-number
N/A
385. Disable the interface from sending
and receiving IS-IS packets.
isis silent
By default, the interface can send
and receive IS-IS packets.
687BDisabling hello source address check for a PPP interface
On a P2P link, IS-IS verifies the source IP address of the incoming hello packets is in the same network
segment as the IP address of the receiving interface. If not, it discards the hello packets, and no neighbor
relationship can be established with the peer router.
If a PPP interface's peer IP address is on a different network segment, disable the hello source address
check for the PPP interface to establish the neighbor relationship with the peer.
To enable neighbor relationships over different network segments:
Ste
p
Command
Remarks
386. Enter system view.
system-view N/A
387. Enter interface view.
interface interface-type
interface-number
N/A