Enabling automatic is-is cost calculation, Specifying a priority for is-is, Configuring the maximum number of ecmp routes – H3C Technologies H3C S12500 Series Switches User Manual
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Step Command
Remarks
4.
Specify a global
IS-IS cost.
circuit-cost value [ level-1 | level-2 ]
By default, no global cost is
specified.
Enabling automatic IS-IS cost calculation
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 an IS-IS cost style. cost-style { wide | wide-compatible }
narrow by default.
4.
Enable automatic IS-IS cost
calculation.
auto-cost enable
Disabled by default.
5.
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 is adopted. You can
reference a routing policy to specify a priority for specific routes. For information about routing policy,
see "Configuring routing policies."
To configure the priority of IS-IS:
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 a priority for IS-IS.
preference { route-policy route-policy-name |
preference } *
15 by default.
Configuring the maximum number of ECMP routes
Perform this task to implement load sharing over ECMP routes.
To configure the maximum number of ECMP routes:
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