R2511-HP MSR Router Series Layer 3 - IP Routing Command Reference(V5)

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ip-prefix ip-prefix-name: Specifies an IP address prefix list by its name, a string of 1 to 19 characters, to
filter received routes by destination. For more information about IP prefix lists, see Layer 3—IP Routing
Configuration Guide.
route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63
characters, to filter received routes. For more information about routing policy, see Layer 3—IP Routing
Configuration Guide.
Usage guidelines
To reference an advanced ACL (with a number from 3000 to 3999) in the command, configure the ACL
in one of the following ways:
• To deny/permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ip
source sour-addr sour-wildcard command.
• To deny/permit a route with the specified destination and mask, use the rule [ rule-id ] { deny |
permit } ip source sour-addr sour-wildcard destination dest-addr dest-wildcard command.
The source keyword specifies the destination address of a route and the destination keyword specifies the
subnet mask of the route. (The subnet mask must be valid; otherwise, the configuration is ineffective.)
Examples
# Use ACL 2000 to filter received routes.
<Sysname> system-view
[Sysname] acl number 2000
[Sysname-acl-basic-2000] rule deny source 192.168.10.0 0.0.0.255
[Sysname-acl-basic-2000] quit
[Sysname] ospf 100
[Sysname-ospf-100] filter-policy 2000 import
# Configure ACL 3000 to permit only route 113.0.0.0/16. Use ACL 3000 to filter received routes.
<Sysname> system-view
[Sysname] acl number 3000
[Sysname-acl-adv-3000] rule 10 permit ip source 113.0.0.0 0 destination 255.255.0.0 0
[Sysname-acl-adv-3000] rule 100 deny ip
[Sysname-acl-adv-3000] quit
[Sysname] ospf 100
[Sysname-ospf-100] filter-policy 3000 import
graceful-restart help
Use graceful-restart help to configure for which OSPF neighbors the current router can serve as a GR
helper. (The neighbors are specified by the ACL or the IP prefix list.)
Use undo graceful-restart help to restore the default.
Syntax
graceful-restart help { acl-number | prefix prefix-list }
undo graceful-restart help