H3C Technologies H3C S10500 Series Switches - Manual (Page 369)

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[Sysname] ip ip-prefix abc index 10 deny 10.1.0.0 16
[Sysname] ip ip-prefix abc index 20 deny 10.2.0.0 16
[Sysname] ip ip-prefix abc index 30 deny 10.3.0.0 16
[Sysname] ip ip-prefix abc index 40 permit 0.0.0.0 0 less-equal 32
Define an IPv6 prefix list
Identified by name, each IPv6 prefix list can comprise multiple items. Each item specifies a prefix range
to match and is identified by an index number.
An item with a smaller index number is matched first. If one item is matched, the IPv6 prefix list is passed,
and the routing information will not go to the next item.
Follow these steps to define an IPv6 prefix list:
To do… Use the command… Remarks
Enter system view system-view —
Define an IPv6 prefix list
ip ipv6-prefix ipv6-prefix-name [ index index-number ]
{ deny | permit } ipv6-address prefix-length
[ greater-equal min-prefix-length ] [ less-equal
max-prefix-length ]
Required
Not defined by default.
NOTE:
If all items are set to the deny mode, no routes can pass the IPv6 prefix list. You must 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.
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 relationship between
items is logical OR. 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
relationship between items is logic OR. If routing information matches one of these items, it passes the
community list.