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Step
3.
Specify an IS-IS
cost style.
4.
Enter IPv6 address
family view.
5.
Enable IPv6 IS-IS
MTR.
6.
Specify a global
IPv6 IS-IS cost.
Enabling automatic link cost calculation
Step
1.
Enter system view.
2.
Enter IS-IS view.
3.
Specify an IS-IS cost
style.
4.
Enter IPv6 address family
view.
5.
Enable IPv6 IS-IS MTR.
6.
Enable automatic IPv6
IS-IS cost calculation.
7.
(Optional.) Configure a
bandwidth reference
value for automatic IPv6
IS-IS cost calculation.
Tuning and optimizing IPv6 IS-IS networks
Configuration prerequisites
Before you tune and optimize IPv6 IS-IS networks, complete basic IPv6 IS-IS tasks.
Assigning a convergence priority to IPv6 IS-IS routes
A topology change causes IS-IS routing convergence. To improve convergence speed, you can
assign convergence priorities to IPv6 IS-IS routes. Convergence priority levels are critical, high,
medium, and low. The higher the convergence priority, the faster the convergence speed.
By default, IPv6 IS-IS host routes have medium convergence priority, and other IPv6 IS-IS routes
have low convergence priority.
To assign a convergence priority to specific IPv6 IS-IS routes:
Step
1.
Enter system view.
Command
cost-style { wide | wide-compatible |
compatible }
address-family ipv6 [ unicast ]
multi-topology [ compatible ]
circuit-cost cost-value [ level-1 | level-2 ]
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
cost-style { wide |
wide-compatible }
address-family ipv6 [ unicast ]
multi-topology [ compatible ]
auto-cost enable
bandwidth-reference value
Command
system-view
476
Remarks
By default, the IS-IS cost
style is narrow.
N/A
By default, IPv6 IS-IS MTR
is disabled.
By default, no global IPv6
cost is specified.
Remarks
N/A
N/A
By default, the IS-IS cost style is
narrow.
N/A
By default, IPv6 IS-IS MTR is
disabled.
By default, automatic IPv6 IS-IS
cost calculation is disabled.
The default setting is 100 Mbps.
Remarks
N/A
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Troubleshooting
