H3C Technologies H3C S10500 Series Switches - Manual (Page 167)

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To do… Use the command… Remarks
Configure a bandwidth
reference value for automatic
IS-IS cost calculation
bandwidth-reference value
Optional
100 Mbps by default
Specifying a priority for IS-IS
A router can run multiple routing protocols. When routes to the same destination are found by multiple
routing protocols, the route learned by the protocol with the highest priority can be adopted. You can
reference a routing policy to specify a priority for specific routes. For information about routing policy,
see the chapter “Routing policy configuration.”
Follow these steps to configure the priority of IS-IS.
To do… Use the command… Remarks
Enter system view system-view —
Enter IS-IS view isis [ process-id ] [ vpn-instance vpn-instance-name ] —
Specify a priority for IS-IS
preference { route-policy route-policy-name |
preference } * Required
15 by default
Configuring the maximum number of equal cost routes
If multiple equal cost routes reach the same destination, the traffic can be load balanced to enhance
efficiency.
Follow these steps to configure the maximum number of equal cost routes:
To do… Use the command… Remarks
Enter system view system-view —
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
—
Specify the maximum number of
equal cost routes for load
balancing
maximum load-balancing number
Required
8 by default
Configuring IS-IS route summarization
This task allows you to configure a summary route so routes falling into the network range of the summary
route are summarized into one route for advertisement. Doing so can reduce the size of routing tables, as
well as the scale of LSP and LSDB. Both IS-IS routes and redistributed routes can be summarized.