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Configuring an IS-IS cost for an interface
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. (Optional.) Specify an
IS-IS cost style.
cost-style
{
narrow
|
wide
|
wide-compatible
| {
compatible
|
narrow-compatible
} [
relax-spf-limit
] }
By default, the IS-IS cost
type is
narrow
.
4. Return to system view.
N/A
5. Enter interface view.
interface
interface-type interface-number
N/A
6. Specify a cost for the
IS-IS interface.
isis cost
cost-value [
level-1
|
level-2
]
By default, no cost for the
interface is specified.
Configuring a global IS-IS cost
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. (Optional.) Specify an
IS-IS cost style.
cost-style
{
narrow
|
wide
|
wide-compatible
| {
compatible
|
} [
] }
By default, the IS-IS cost
type is
narrow
.
4. Specify a global IS-IS
cost.
circuit-cost
cost-value [
level-1
|
level-2
]
By default, no global cost is
specified.
Enabling automatic IS-IS cost calculation
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Enable automatic IS-IS
cost calculation.
auto-cost enable
By default, automatic IS-IS
cost calculation is disabled.
4. (Optional.) Configure a
bandwidth reference
value for automatic IS-IS
cost calculation.
bandwidth-reference
value
The default setting is 100
Mbps.
Specifying a preference for IS-IS
If multiple routing protocols find routes to the same destination, the route found by the routing
protocol that has the highest preference is selected as the optimal route.
Perform this task to assign a preference to IS-IS directly or by using a routing policy. For more
information about the routing policy, see "Configuring routing policies."
To configure a preference for IS-IS:
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