Configure Listen Limit on BGP Dynamic Peer
About this task
EFA enables configuration of global router BGP listen-limit which depends on the router BGP dynamic peer scale requirements. Listen-limit configuration defined under the “global router bgp” context signifies the maximum number of dynamic BGP peers that can be operational across the VRFs in the SLX. Default value of the global router BGP listen-limit is 100, which you can modify with any value in the range of 1-2400.

Note
- For the SLX version 20.3.4 or lower, the supported listen-limit range is <1-1024>.
- For the SLX version 20.4.1 or higher, the supported listen-limit range is <1-2400>.
Ensure that the listen-limit configuration defined at the “dynamic peer listen-range” level is less than or equal to the “listen-limit” configuration defined under the “global router bgp”. Pre-2.5.0 versions of EFA do not support configuration of global router bgp listen-limit.
The maximum number of dynamic BGP peers is limited to the SLX default (100), when provisioned through EFA.
Configure the new fabric setting for each fabric with bgp-dynamic-peer-listen-limit
command. The fabric setting is
applicable for Clos and small data center fabrics, and for all types of devices
(leaf, border-leaf, spine, super-spine).
Configure the bgp-dynamic-peer-listen-limit
value on all the devices of the fabric
when you configure the fabric.
You can configure the bgp-dynamic-peer-listen-limit
on an already provisioned fabric. For
the new value to be effective, run the fabric configure
command, followed by the efa
fabric setting update command. This enables you to configure bgp-dynamic-peer-listen-limit on the existing pre-2.5.0
deployments.

Note
You can only increase (but not decrease) the value ofbgp-dynamic-peer-listen-limit
on an already provisioned
fabric.