Edge-Core ECS4660-28F, Management Manual, Page: 1866 / 2020

C
HAPTER
51
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1866 –
neighbor
ebgp-multihop
This command allows eBGP neighbors to exist in different segments, and
configures the maximum hop count (TTL). Use the no form to restore the
default setting.
S
YNTAX
neighbor { ip-address | group-name } ebgp-multihop [ count ]
no neighbor { ip-address | group-name } ebgp-multihop
ip-address – IP address of a neighbor.
group-name – A BGP peer group containing a list of neighboring
routers configured with the neighbor peer-group command.
count – Maximum hop count. (Range: 1-255)
C
OMMAND
M
ODE
Router Configuration
D
EFAULT
S
ETTING
eBGP neighbors must be located in the same segment.
C
OMMAND
U
SAGE
◆
This command can be used to allow routers in different network
segments to create a BGP neighbor relationship.
◆
If this command is entered without specifying a count, the hop limit is
set at 255.
◆
To avoid creating loops through oscillating routes, a multi-hop session
will not be established if the only route to a multi-hop peer is the
default route.
E
XAMPLE
Console(config-router)#neighbor 10.1.1.64 ebgp-multihop 2
Console(config-router)#
neighbor
enforce-multihop
This command enforces the requirement for all neighbors to form multi-
hop connections. Use the no form to disable this requirement.
S
YNTAX
[ no ] neighbor { ip-address | group-name } enforce-multihop
ip-address – IP address of a neighbor.
group-name – A BGP peer group containing a list of neighboring
routers configured with the neighbor peer-group command.
C
OMMAND
M
ODE
Router Configuration