As Path List Configuration; Community List Configuration - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Routing Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
Note:
If more than one ip-prefix item are defined, the match mode of at least one item should
be the permit mode.

6.5 AS Path List Configuration

A BGP routing information packet contains an AS path field. AS path list can be used to
match the AS path field in BGP routing information to filter out the routing information
that does not match.
You can perform the following configuration in system view.
Table 6-5 AS path list configuration
Operation
Enter system view
Configure AS path
list
By default, no AS path list is defined.

6.6 Community List Configuration

In BGP, community attributes are optional transitive. Some community attributes are
globally recognized and they are called standard community attributes. Some are for
special purposes and they can be customized.
A route can have one or more community attributes. The speaker of multiple community
attributes of a route can act based on one, multiple or all attributes. A router can decide
whether to change community attributes before forwarding a route to other peer entity.
Community list is used to identify community information. It falls in to two types: basic
community list and advanced community list. The former one's value ranges from 1 to
99, and the latter one's ranges from 100 to 199.
You can perform the following configuration in system view.
Table 6-6 Community list configuration
Operation
Enter
view
system-view
ip as-path-acl acl-number { permit | deny }
as-regular-expression
system
system-view
Huawei Technologies Proprietary
Chapter 6 IP Routing Policy Configuration
Command
Command
6-8
Description
-
Optional
Description
-