Configuring is-is route control, Configuration prerequisites, Configuring is-is link cost – H3C Technologies H3C S5560 Series Switches User Manual

Page 158

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142

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter interface view.

interface interface-type
interface-number

N/A

3.

Configure P2P network type for an
interface.

isis circuit-type p2p

By default, the network type of an
interface depends on the physical

media. The network type of a
VLAN interface is broadcast.

Configuring IS-IS route control

Configuration prerequisites

Before the configuration, complete the following tasks:

Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes.

Enable IS-IS.

Configuring IS-IS link cost

The IS-IS cost of an interface is determined in the following order:

1.

IS-IS cost specified in interface view.

2.

IS-IS cost specified in system view.
The cost is applied to the interfaces associated with the IS-IS process.

3.

Automatically calculated cost.
If the cost style is wide or wide-compatible, IS-IS automatically calculates the cost using the formula:
Interface cost = (Bandwidth reference value / Expected interface bandwidth) × 10, in the range of

1 to 16777214. For other cost styles,

Table 13

applies.

Configure the expected bandwidth of an interface with the bandwidth command. For more

information, see Interface Command Reference.

Table 13 Automatic cost calculation scheme for cost styles other than wide and wide-compatible

Interface bandwidth

Interface cost

≤ 10 Mbps

60

≤ 100 Mbps

50

≤ 155 Mbps

40

≤ 622 Mbps

30

≤ 2500 Mbps

20

> 2500 Mbps

10

4.

If none of the above costs is used, a default cost of 10 applies.

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