12-5If all items are set to the deny mode, no routes can pass the IPv6 prefix list. Therefore, you need todefine the permit :: 0 less-equal 128 item following multiple deny items to allow other IPv6 routinginformation to pass.For example, the following configuration filters routes 2000:1::/48, 2000:2::/48 and 2000:3::/48, butallows 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 128Defining an AS Path ListYou can define multiple items for an AS path list that is identified by number. The relation betweenitems 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… RemarksEnter system view system-view —Define an AS path ACL ip as-path as-path-number { deny |permit } regular-expressionRequiredNot defined by default.Defining a Community ListYou can define multiple items for a community list that is identified by number. During matching, therelation between items is logic OR, that is, if routing information matches one of these items, it passesthe community list.Follow these steps to define a community list:To do… Use the command… RemarksEnter system view system-view —Define a basiccommunity listip community-list basic-comm-list-num { deny |permit } [ community-number-list ] [ internet |no-advertise | no-export |no-export-subconfed ] *Define acommunity listDefine anadvancedcommunity listip community-list adv-comm-list-num { deny |permit } regular-expressionRequired to defineeither;Not defined bydefault.
