HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 265

Defining filters Configuration prerequisites Before you configure this task, you must determine IP-prefix list name, matching address range, and extcommunity list sequence number. Defining an IP prefix list Defining an IPv4 prefix list Identified by name, an IPv4 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 IP prefix list is passed, and the routing information will not go to the next item. To define an IPv4 prefix list: Step 1. Enter system view. 2. Define an IPv4 prefix list. Command system-view ip ip-prefix ip-prefix-name [ index index-number ] { deny | permit } ip-address mask-length [ greater-equal min-mask-length ] [ less-equal max-mask-length ] Remarks N/A Not defined by default. If all the items are set to the deny mode, no routes can pass the IPv4 prefix list. You must define the permit 0.0.0.0 0 less-equal 32 item following multiple deny items to allow other IPv4 routing information to pass. For example, the following configuration filters routes 10.1.0.0/16, 10.2.0.0/16, and 10.3.0.0/16, but allows other routes to pass. system-view [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 Defining 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. To define an IPv6 prefix list: Step 1. Enter system view. Command system-view Remarks N/A 255