H3C Technologies H3C SR8800 - Manual (Page 169)

153
To configure the IS level and circuit level:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter IS-IS view.
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
3. Specify the IS level.
is-level { level-1 | level-1-2 |
level-2 }
Optional.
The default is Level-1-2.
4. Return to system view. quit N/A
5. Enter interface view.
interface interface-type
interface-number
N/A
6. Specify the circuit level.
isis circuit-level [ level-1 | level-1-2
| level-2 ] Optional.
The default is Level-1-2.
Configuring the network type of an interface as P2P
Interfaces with different network types operate differently. For example, broadcast interfaces on a
network must elect the DIS and flood CSNP packets to synchronize the LSDBs, but P2P interfaces on a
network do not need to elect the DIS and have a different LSDB synchronization mechanism.
If only two routers exist on a broadcast network, configure the network type of attached interfaces as P2P
to avoid DIS election and CSNP flooding, saving network bandwidth and speeding up network
convergence.
To configure the network type of an interface:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the network type for the
interface as P2P.
isis circuit-type p2p
Optional.
By default, the
network type of an
interface depends on
the physical media.
NOTE:
You can only perform this configuration for a broadcast network with only two attached routers.
Configuring IS-IS routing information control
Configuration prerequisites
Before the configuration, complete the following tasks: