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Usage guidelines
This command filters received routes. Only routes that have not been filtered can be added into the
routing table.
To reference an advanced ACL (with a number from 3000 to 3999) in the command or in the routing
policy, configure the ACL using one of the following methods:
• To deny/permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ipv6
source sour sour-prefix command
• To deny/permit a route with the specified destination and prefix, use the rule [ rule-id ] { deny |
permit } ipv6 source sour sour-prefix destination dest dest-prefix command.
The source keyword specifies the destination address of a route and the destination keyword specifies the
prefix of the route. The specified prefix must be valid. Otherwise, the configuration does not take effect.
Examples
# Use IPv6 ACL 2003 to filter received routes.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] ipv6 filter-policy 2003 import
# Configure IPv6 ACL 3000 to permit only route 2001::1/128 to pass. Use the ACL to filter received
routes.
<Sysname> system-view
[Sysname] acl ipv6 number 3000
[Sysname-acl6-adv-3000] rule 10 permit ipv6 source 2001::1 128 destination
ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 128
[Sysname-acl6-adv-3000] rule 100 deny ipv6
[Sysname-acl6-adv-3000] quit
[Sysname] isis 1
[Sysname-isis-1] ipv6 filter-policy 3000 import
Related commands
ipv6 filter-policy export
ipv6 import-route
Use ipv6 import-route to enable IPv6 IS-IS to redistribute routes from another routing protocol.
Use undo ipv6 import-route to disable route redistribution.
Syntax
ipv6 import-route protocol [ process-id ] [ allow-ibgp ] [ cost cost | [ level-1 | level-1-2 | level-2 ] |
route-policy route-policy-name| tag tag ] *
undo ipv6 import-route protocol [ process-id ]
Default
IPv6 does not redistribute routes from any other routing protocol.
Views
IS-IS view
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