XCO provides secure TCP using MD5 for BGP connections across all fabric links. You are able to configure or modify the MD5 password at any time.
This feature enables you to provide an md5-password as a fabric
setting that further becomes configured on all the fabric links, that is, BGP
peer-groups and individual neighbors without peer-groups on the SLX devices, so that the
peer sessions are established using MD5 authentication. This will be applied to both
Clos and non-Clos fabrics. By default, MD5 authentication on the fabric is disabled. Any
new fabric or the fabrics upgraded from previous releases will have the MD5
authentication disabled.