HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 215

Figure 56 AS number substitution configuration (in an IPv4 network) For example, as shown in Figure 56, CE 1 and CE 2 use the same AS number 800. To implement bidirectional communication between the two sites, configure AS number substitution on PE 2 to replace AS 800 as AS 100 for the BGP route update originated from CE 1 before advertising it to CE 2, and perform the same configuration on PE 1. To configure AS number substitution for a peer or peer group (IPv4): Step 1. Enter system view. 2. Enter BGP view or BGP-VPN instance view. 3. Configure AS number substitution for a peer or peer group. Command system-view • Enter BGP view: bgp as-number • Enter BGP-VPN instance view: a. bgp as-number b. ip vpn-instance vpn-instance-name peer { group-name | ip-address } substitute-as Remarks N/A N/A By default, AS number substitution is not configured. To configure AS number substitution for a peer or peer group (IPv6): Step Command 1. Enter system view. system-view 2. Enter BGP view or BGP-VPN instance view. • Enter BGP view: bgp as-number • Enter BGP-VPN instance view: a. bgp as-number b. ip vpn-instance vpn-instance-name 3. Configure AS number substitution for a peer or peer peer { group-name | group. ipv6-address } substitute-as Remarks N/A N/A By default, AS number substitution is not configured. Removing private AS numbers from updates sent to an EBGP peer or peer group Private AS numbers are typically used in test networks, and should not be transmitted in public networks. The range of private AS numbers is from 64512 to 65535. To remove private AS numbers from updates sent to an EBGP peer or peer group (IPv4): 204