Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 5 BGP Configuration Commands
3Com Corporation
5-35
Character Meaning
_
Matches a comma, left brace, right
brace, left parenthesis, right
parenthesis, the beginning of an input
string, the end of an input string, or a
space.
[ range ]
Means the range of single-character
patterns.
- Separates the ending points of a range.
You can specify a regular expression to match AS path information when defining
aspath-acl. The system can filter out unmatched routing information by matching
aspath-acl. You can define multiple aspath-acl commands for one list number, that is,
one list number can represent a group of AS access lists. Each AS path list is identified
by a number.
Description
Use the ip as-path-acl command to configure an AS path regular expression.
Use the undo ip as-path-acl command to disable the defined regular expression.
The configured AS path list can be used in BGP policy.
Related command: peer as-path-acl, and display bgp routing as-path-acl.
Example
# Configure an AS path list.
[3Com ] ip as-path-acl 10 permit 200,300
5.1.35 ip community-list
Syntax
ip community-list stand-comm-list-number { permit | deny } { aa:nn | internet |
no-export-subconfed | no-advertise | no-export }
ip community-list ext-comm-list-number { permit | deny } as-regular-expression
undo ip community-list { stand-comm-list-number | ext-comm-list-number }
View
System view
Parameter
stand-comm-list-number: Number of the standard community list ranging from 1 to 99.