A Discovery Code of the G.Bond port (GBS).
A unique 6 octet long code used by the Discovery function.
This object MUST be instantiated for the -O subtype GBS before
writing operations on the gBondBceConfRemoteDiscoveryCode
(Set_if_Clear and Clear_if_Same) are performed by BCEs
associated with the GBS.
The initial value of this object for -R subtype ports after
reset is all zeroes. For -R subtype ports, the value of this
object cannot be changed directly. This value may be changed
as a result of writing operation on the
gBondBceConfRemoteDiscoveryCode object of remote BCE of -O
subtype, connected to one of the local BCEs associated with
the GBS.
Discovery MUST be performed when the link is administratively
'down', as indicated by the ifAdminStatus object in IF-MIB.
Attempts to change this object MUST be rejected (in case of
SNMP with the error inconsistentValue), if the link is Up or
Initializing.
This object maps to the TR-159 attribute
aGroupDiscoveryCode.