R3303-HP HSR6800 Routers Layer 3 - IP Routing Command Reference

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Examples
# Configure node 10 in permit mode of routing policy policy1 to match RIP, OSPF and IS-IS routing
information having a tag of 8.
<Sysname> system-view
[Sysname] route-policy policy1 permit node 10
[Sysname-route-policy-policy1-10] if-match tag 8
ip as-path
Use ip as-path to create an AS path list.
Use undo ip as-path to remove an AS path list.
Syntax
ip as-path as-path-number { deny | permit } regular-expression
undo ip as-path as-path-number
Default
No AS path list is created.
Views
System view
Default command level
2: System level
Parameters
as-path-number: Specifies an AS path list by its number in the range of 1 to 256.
deny: Specifies the match mode for the AS path list as deny.
permit: Specifies the match mode for the AS path list as permit.
regular-expression: Specifies the AS-PATH regular expression, a string of 1 to 50 characters.
Usage guidelines
BGP routing updates contain the AS path attribute field that identifies the autonomous systems through
which the routing information has passed. An AS-PATH regular expression, for example, ^200. *100$,
matches the AS path attribute that starts with AS 200 and ends with AS 100. For the meanings of special
characters used in regular expressions, see Fundamentals Configuration Guide.
Examples
# Create AS path list 1, permitting routing information whose AS_PATH attribute starts with 10.
<Sysname> system-view
[Sysname] ip as-path 1 permit ^10
ip community-list
Use ip community-list to configure a community list entry.
Use undo ip community-list to remove a community list or entry.