Huawei S6700 Series Configuration Manual page 267

S6700 Series Ethernet Switches
Configuration Guide - IP Routing
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Issue 01 (2012-03-15)
3. Run:
cost-style { narrow | wide | wide-compatible | { { narrow-compatible |
compatible } [ relax-spf-limit ] } }
The IS-IS cost type is configured.
The cost range of an interface and a route received by the interface vary with the cost type.
– If the cost type is narrow, the cost of an interface ranges from 1 to 63. The maximum
cost of a route received by the interface is 1023.
– If the cost style is narrow-compatible or compatible, the cost of an interface ranges from
1 to 63. The cost of a received route is related to relax-spf-limit.
– If relax-spf-limit is not specified, the cost of a route works as follows:
If the cost of a route is not greater than 1023 and the cost of every interface that the
route passes through is smaller than or equal to 63, the cost of the route received by
the interface is the actual cost.
If the cost of a route is not greater than 1023 but the costs of all interfaces that the
route passes through are greater than 63, the IS-IS device can learn only the routes
to the network segment where the interface resides and the routes imported by the
interface. The cost of the route received by the interface is the actual cost. Subsequent
routes forwarded by the interface are discarded.
If the cost of a route is greater than 1023, the IS-IS device can learn only the interface
whose route cost exceeds 1023 for the first time. That is, the cost of each interface
before this interface is not greater than 63. The routes of the network segment where
the interface resides and the routes imported by the interface can all be learned. The
cost of the route is 1023. Subsequent routes forwarded by the interface are discarded.
– If relax-spf-limit is specified, the cost of a route works as follows:
There is no limit on costs of interfaces or route costs. The cost of a route received
by an interface is the actual cost.
– If the cost style is wide-compatible or wide, the cost of the interface ranges from 1 to
16777215. When the cost is 16777215, the neighbor TLV generated on the link cannot
be used for route calculation but for the transmission of TE information. The maximum
cost of a received route is 0xFFFFFFFF.
Configure the cost of 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 cost cost [ level-1 | level-2 ]
The cost of the IS-IS interface is configured.
You can use the isis cost command to configure the cost of a specified interface.
Configure the global IS-IS cost.
1. Run:
system-view
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6 IS-IS Configuration
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