Huawei Quidway NetEngine80E Configuration Manual page 639

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Context
By default, the convergence priority of 128-bit host routes is medium, and the convergence
priority of the other IS-IS routes is low.
The NE80E/40E allows you to configure the highest convergence priority for specific IS-IS
routes so that those IS-IS routes will be converged first when a network topology changes.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
isis [ process-id ]
The IS-IS view is displayed.
Step 3 Run:
ipv6 prefix-priority [ level-1 | level-2 ] { critical | high | medium } { ipv6-
prefix prefix-name | tag tag-value }
Convergence priorities are set for IS-IS routes.
The application rules of the convergence priorities for IS-IS routes are as follows:
l Existing IS-IS routes are converged based on the priorities configured in the ipv6 prefix-
l New IS-IS routes are converged based on the priorities configured in the ipv6 prefix-
l If an IS-IS route conforms to the matching rules of multiple convergence priorities, the
l The convergence priority of a Level-1 IS-IS route is higher than that of a Level-2 IS-IS route.
l If the route level is not specified, the configuration of the prefix-priority command takes
Step 4 (Optional) Run:
quit
The system view is displayed.
Step 5 (Optional) Run:
ipv6 route prefix-priority-scheduler critical-weight high-weight medium-weight low-
weight
The preference-based scheduling ratio of IPv6 routes is configured.
Issue 02 (2014-09-30)
priority command.
priority command.
highest convergence priority is used.
effect for both Level-1 and Level-2 IS-IS routes.
NOTE
The ipv6 prefix-priority command is only applicable to the public network.
After the ipv6 prefix-priority command is run, the convergence priority of 32-bit host routes is low, and
the convergence priorities of the other routes are determined as specified in the ipv6 prefix-priority
command.
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