Enabling BGP to establish an EBGP session over multiple hops

To establish an EBGP connection, two routers must have a direct physical link. If no direct link is available, you must use the peer ebgp-max-hop command to enable BGP to establish an EBGP session over multiple hops and specify the maximum hops.

If directly connected EBGP peers use loopback interfaces to establish a BGP session, you do not need to configure the peer ebgp-max-hop command.

To enable BGP to establish an indirect EBGP session (IPv4):

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Enter BGP view or BGP-VPN instance view.	Enter BGP view:bgp as-number Enter BGP-VPN instance view: bgp as-number ip vpn-instance vpn-instance-name	N/A
3. Enable BGP to establish an EBGP session to an indirectly-connected peer or peer group and specify the maximum hop count.	peer { group-name \| ip-address } ebgp-max-hop [ hop-count ]	By default, BGP cannot establish an EBGP session to an indirectly-connected peer or peer group.

To enable BGP to establish an indirect EBGP session (IPv6):

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Enter BGP view or BGP-VPN instance view.	Enter BGP view:bgp as-number Enter BGP-VPN instance view: bgp as-number ip vpn-instance vpn-instance-name	N/A
3. Enable BGP to establish an EBGP session to an indirectly-connected peer or peer group and specify the maximum hop count.	peer { group-name \| ipv6-address } ebgp-max-hop [ hop-count ]	By default, BGP cannot establish an EBGP session to an indirectly-connected peer or peer group.

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