Configuring eBGP Multi-hop Examples

By | 9th November 2015

In order to connect to an external BGP network or peers not directly connected to your network, you need to use the neighbour ebgp-multihop command in the bgp router configuration mode.

The multihop command is used only when connecting to an external neighbour, peers or a third party router. The example topology and configuration below shows how this works.




ebgp multihop

RouterHQ Configuration

RouterHQ(config)#router bgp 255

RouterHQ(config-router)#neighbor 10.10.1.2 remote-as 556

RouterHQ(config-router)#neighbor 10.10.1.2 ebgp-multihop

RouterHQ(config-router)#end

Branch1 Configuration

Branch1(config)#router bgp 556

Branch1(config-router)#neighbor 10.10.1.1 remote-as 255

The above eBGP configuration on RouterHQ indicates connection to external neighbour or peer not directly connected.  Branch1 has a direct link now and don’t have to use the ebgp-multihop command but the neighbor remote-as command.




iBGP Configuration

eBGP Configuration

Configuring eBGP with Loopback Address

How To Configure BGP Peers with Authentication

EIGRP

 OSPF
RIP v2

Host Standby Router Redundancy Protocol (HSRP)

Virtual Router Redundancy Protocol (VRRP)

Gateway Load Balancing Protocol (GLBP)

Spanning Tree Protocol (STP)

VLAN Trunking Protocol (VTP)

IPv6 Explained

EIGRPv6

RIPv6 or RIPng

OSPFv3

DHCPv6

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