Configuring Is-Is Basic Functions; Configuration Prerequisites; Enabling Is-Is; Configuring The Is Level And Circuit Level - HPE 5800 Series Configuration Manual

Configuring IS-IS basic functions

This section describes the basic settings required for an IS-IS network to run.

Configuration prerequisites

Before the configuration, complete the following tasks:
•
Configure the link layer protocol.
•
Configure IP addresses for interfaces, and make sure that all neighboring nodes are reachable
to each other at the network layer.

Enabling IS-IS

Step
Enter system view.
1.
Enable the IS-IS routing
2.
process and enter its view.
Assign a network entity title.
3.
Return to system view.
4.
Enter interface view.
5.
Enable an IS-IS process on
6.
the interface.

Configuring the IS level and circuit level

If only one area exists, perform the following operations:
•
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
Enter system view.
1.
Enter IS-IS view.
2.
Specify the IS level.
3.
Return to system view.
4.
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
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
126
Remarks
N/A
Not enabled by default.
Not assigned by default.
N/A
N/A
Disabled by default.
Remarks
N/A
N/A
Optional.
The default is Level-1-2.
N/A