Filtering Ipv6 Is-Is Routes - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Step 3 Run:
ipv6 maximum load-balancing number
The maximum number of load-balancing equal-cost IS-IS routes is set.
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7.13.4 Filtering IPv6 IS-IS Routes

If some IS-IS routes are not preferred, configure conditions to filter IS-IS routes. Only IS-IS
routes meeting the specified conditions can be added to an IP routing table.
Context
Only routes in an IP routing table can be used to forward IP packets. An IS-IS route can take
effect only after this IS-IS route has been successfully added to an IP routing table.
If an IS-IS route does not need to be added to a routing table, specify conditions, such as a basic
ACL, IPv6 prefix, and routing policy, to filter routes so that only IS-IS routes that meet the
specified conditions can add to an IP routing table. IS-IS routes that do not meet the specified
conditions cannot be added to the IP routing table and cannot be selected to forward IP packets.
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:
l ipv6 filter-policy { acl6-number | acl6-name acl6-name } import
Issue 02 (2014-09-30)
NOTE
When the number of equal-cost routes is greater than number specified in the ipv6 maximum load-
balancing command, valid routes are selected for load balancing based on the following criteria:
1. Route preference: Routes with lower preferences are selected for load balancing.
2. Interface index: If routes have the same priorities, routes with higher interface index values are selected
for load balancing.
3. Next hop IP address: If routes have the same priorities and interface index values, routes with larger
IP address are selected for load balancing.
Conditions for filtering IS-IS routes are configured based on the ACL.
Run any of the following commands as required:
– Configure a basic ACL:
1. Run:
quit
Return to the BGP view.
2. Run:
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