H3C Technologies H3C S7500E Series Switches - Manual (Page 362)

12-5
If all items are set to the deny mode, no routes can pass the IPv6 prefix list. Therefore, you need to
define the permit :: 0 less-equal 128 item following multiple deny items to allow other IPv6 routing
information to pass.
For example, the following configuration filters routes 2000:1::/48, 2000:2::/48 and 2000:3::/48, but
allows other routes to pass.
<Sysname> system-view
[Sysname] ip ipv6-prefix abc index 10 deny 2000:1:: 48
[Sysname] ip ipv6-prefix abc index 20 deny 2000:2:: 48
[Sysname] ip ipv6-prefix abc index 30 deny 2000:3:: 16
[Sysname] ip ipv6-prefix abc index 40 permit :: 0 less-equal 128
Defining an AS Path List
You can define multiple items for an AS path list that is identified by number. The relation between
items is logical OR, that is, if a route matches one of these items, it passes the AS path list.
Follow these steps to define an AS path list:
To do… Use the command… Remarks
Enter system view system-view —
Define an AS path ACL
ip as-path as-path-number { deny |
permit } regular-expression
Required
Not defined by default.
Defining a Community List
You can define multiple items for a community list that is identified by number. During matching, the
relation between items is logic OR, that is, if routing information matches one of these items, it passes
the community list.
Follow these steps to define a community list:
To do… Use the command… Remarks
Enter system view system-view —
Define a basic
community list
ip community-list basic-comm-list-num { deny |
permit } [ community-number-list ] [ internet |
no-advertise | no-export |
no-export-subconfed ] *
Define a
community list
Define an
advanced
community list
ip community-list adv-comm-list-num { deny |
permit } regular-expression
Required to define
either;
Not defined by
default.