neighbor ebgp-btsh
neighbor
{
ip-address
|
ipv6-address
|
peer-group-name
}
ebgp-btsh
no neighbor
{
ip-address
|
ipv6-address
|
peer-group-name
}
ebgp-btsh
Disabled.
BGP configuration mode
BGP address-family IPv6 unicast configuration mode
BGP address-family IPv4 unicast VRF configuration mode
BGP address-family IPv6 unicast VRF configuration mode
When this command is entered in BGP global configuration mode, it applies only to
the IPv4 address family. Use this command in BGP address-family IPv6 unicast configuration
mode for BGP4+ configurations. To maximize the effectiveness of this feature, the
neighbor ebgp-btsh
command should be executed on each participating device.
The
neighbor ebgp-btsh
command is supported for both directly connected peering sessions and multihop eBGP
peering sessions. When the
neighbor ebgp-btsh
command is used, BGP control packets sent by the device to a neighbor have a TTL
value of 255. In addition, the device expects the BGP control packets received from
the neighbor to have a TTL value of either 254 or 255. For multihop peers, the device
expects the TTL for BGP control packets received from the neighbor to be greater than
or equal to 255, minus the configured number of hops to the neighbor. If the BGP control
packets received from the neighbor do not have the anticipated value, the device drops
them.
The following example enables GTSM between a device and a neighbor with the IP address 10.10.10.1.
device# configure terminal device(config)# router bgp device(config-bgp-router)# neighbor 10.1.1.1 ebgp-btsh
| Release version | Command history |
|---|---|
| 08.0.30 | Support was added for the BGP address-family IPv6 unicast VRF configuration mode. |