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If only two routers exist on a broadcast network, set the network type of attached interfaces to P2P.
This avoids DIS election and CSNP flooding, saving network bandwidth and speeding up network
convergence.
To configure P2P network type for an interface:
Step
1.
Enter system view.
2.
Enter interface view.
3.
Configure P2P network type for
an interface.
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,
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
≤ 10 Mbps
≤ 100 Mbps
≤ 155 Mbps
≤ 622 Mbps
≤ 2500 Mbps
> 2500 Mbps
4.
If none of the above costs is used, a default cost of 10 applies.
Command
system-view
interface interface-type
interface-number
isis circuit-type p2p
Table 13
Interface cost
60
50
40
30
20
10
144
Remarks
N/A
N/A
By default, the network type of
an interface varies by physical
media. The network type of a
VLAN interface is broadcast.
applies.
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