The administratively configured value for the local port's role parameter. The value of AdminRole is not reflected in the S-channel TLV. The AdminRole may take the value S or B. S indicates the sender is unwilling to accept S-channels configuration (mode, # channels supported, channel index) from its neighbor and that the sender is willing to accept SVID assignments from the neighbor. Stations usually take the S role. B indicates the sender is willing to accept S-channels configuration (mode, # channels supported, channel index) from its neighbor and that the sender is willing do the best it can to fill the SVID assignments from the neighbor. Bridges usually take the B role.