Huawei Quidway NetEngine80E Configuration Manual page 533

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
two Level-1-2 devices. If only one level of neighbor relationships is required, you can configure
the level of an interface to prevent the establishment of the other level of neighbor relationships.
After IS-IS is enabled on an interface, the interface automatically sends Hello packets, attempting
to establish neighbor relationships. If a peer device is not an IS-IS device or an interface is not
expected to send Hello packets, suppress the interface. Then this interface only advertises routes
of the network segment where the interface resides, but does not send Hello packets. This
suppression improves the link bandwidth usage.
Procedure
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Configure an IS-IS interface.
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
isis enable [ process-id ]
An IS-IS interface is configured.
After this command is run, the IS-IS device uses the specified interface to send Hello
packets and flood LSPs.
NOTE
No neighbor relationship needs to be established between loopback interfaces. If this command
is run on a loopback interface, the routes of the network segment where the loopback interface
resides will be advertised through other IS-IS interfaces.
(Optional) Configure the level of an IS-IS interface.
1. Run:
isis circuit-level [ level-1 | level-1-2 | level-2 ]
The level of the interface is configured.
By default, the level of an interface is level-1-2.
NOTE
Changing the level of an IS-IS interface is valid only when the level of the IS-IS device is
Level-1-2. If the level of the IS-IS device is not a Level-1-2, the level of the IS-IS device
determines the level of the adjacency to be established.
(Optional) Suppress an IS-IS interface.
1. Run:
isis silent [ advertise-zero-cost ]
The IS-IS interface is suppressed.
A suppressed IS-IS interface does not send or receive IS-IS packets. The routes of the
network segment where the interface resides, however, can still be advertised to other
routers within the area.
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