Configuring The Is Level And Circuit Level; Configuring P2P Network Type For An Interface - HP VSR1000 Configuration Manual

Step
3. Assign a NET.
4. Return to system view.
5. Enter interface view.
6. Enable an IS-IS process on the
interface.

Configuring the IS level and circuit level

Follow these guidelines when you configure the IS level for routers in only one area:
Configure the IS level of all routers as Level- 1 or Level-2 rather than different levels because the
•
routers do not need to maintain two identical LSDBs.
• Configure the IS level as Level-2 on all routers in an IP network for good scalability.
For an interface of a Level- 1 (or Level-2) router, the circuit level can only be Level- 1 (or Level-2). For an
interface of a Level- 1 -2 router, the default circuit level is Level- 1 -2; if the router only needs to form Level- 1 (or
Level-2) neighbor relationships, configure the circuit level for its interfaces as Level- 1 (or Level-2) to limit
neighbor relationship establishment.
To configure the IS level and circuit level:
Step
1. Enter system view.
2. Enter IS-IS view.
3. Specify the IS level.
4. Return to system view.
5. Enter interface view.
6. Specify the circuit level.

Configuring P2P network type for an interface

Perform this task only for a broadcast network that has up to two attached routers.
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.
Command
network-entity net
quit
interface interface-type
interface-number
isis enable [ process-id ]
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
is-level { level-1 | level-1-2 |
level-2 }
quit
interface interface-type
interface-number
isis circuit-level [ level-1 | level-1-2
| level-2 ]
132
Remarks
By default, NET is not assigned.
N/A
N/A
By default, no IS-IS process is
enabled.
Remarks
N/A
N/A
By default, the IS level is Level-1-2.
N/A
N/A
By default, an interface can establish
either the Level-1 or Level-2
adjacency.