[Output Only] Whether the attachment's BGP session
requires/allows/disallows BGP MD5 authentication. This can take one
of the following values: MD5_OPTIONAL, MD5_REQUIRED,
MD5_UNSUPPORTED. For example, a Cross-Cloud Interconnect connection
to a remote cloud provider that requires BGP MD5 authentication has
the interconnectRemoteLocation
attachment_configuration_constraints.bgp_md5 field set to
MD5_REQUIRED, and that property is propagated to the attachment.
Similarly, if BGP MD5 is MD5_UNSUPPORTED, an error is returned if
MD5 is requested.
Values:
UNDEFINED_BGP_MD5 (0):
A value indicating that the enum field is not
set.
MD5_OPTIONAL (532156673):
MD5_OPTIONAL: BGP MD5 authentication is supported and can
optionally be configured.
MD5_REQUIRED (218034496):
MD5_REQUIRED: BGP MD5 authentication must be configured.
MD5_UNSUPPORTED (86962388):
MD5_UNSUPPORTED: BGP MD5 authentication must not be
configured
