Keyring

Another method is to use keyrings or key-chains. A common problem is that replacing a password in a protected session leads to a restart of the whole session. Using keyrings or key-chains addresses this problem in a way that a key (or password) is valid until a new password with a defined start-time is specified. This new key will be negotiated upfront and becomes active at the start-time.

Juniper

set security authentication-key-chains key-chain <KEY-CHAIN-NAME> description "key chain for BGP"
set security authentication-key-chains key-chain <KEY-CHAIN-NAME> key 1 secret mysecretpassword
set security authentication-key-chains key-chain <KEY-CHAIN-NAME> key 1 start-time "2025-01-01.09:00:00 +0200"

set protocols bgp group <GROUPNAME> authentication-algorithm hmac-sha-1-96
set protocols bgp group <GROUPNAME> authentication-key-chain <KEY-CHAIN-NAME>