29.7.3 Automatic determination of the primary port

The primary port of the master node is automatically determined according to information for the two ring ports set by the user. As shown in the table below, the port with the higher priority is used as the primary port. Also, the priority can be reversed for each VLAN group to allocate paths without any particular awareness by the user.

Table 29-5: Primary port selection method (VLAN group#1)
Ring port #1	Ring port #2	Prioritized port
Physical ports	Physical ports	The port with the smaller port number operates as the primary port#
Physical ports	Channel group	The physical port runs as the primary port.
Channel group	Physical ports	The physical port runs as the primary port.
Channel group	Channel group	The port with the smaller channel group number runs as the primary port.

#: In a stack configuration, the switch with the lower switch number operates as the primary port.

Table 29-6: Primary port selection method (VLAN group#2)
Ring port #1	Ring port #2	Prioritized port
Physical ports	Physical ports	The higher port number operates as the primary port#
Physical ports	Channel group	The channel group runs as the primary port.
Channel group	Physical ports	The channel group runs as the primary port.
Channel group	Channel group	The port with the larger channel group number runs as the primary port.

#: In a stack configuration, the switch with the higher switch number operates as the primary port.

Note that in addition to the above determination method, the axrp-primary-port configuration command can be used by users to set the primary port for each VLAN group.