19-100
Usage Guide:
According to
MSTP protocol, the region authentication string is generated by MD5 algorithm with public
authentication key, intstance ID, VLAN ID. Some man
ufactory don’t use the public authentication key, this causes the
incompatibility. After the command is executed the port can use the authentication string of partner port, realize
compatibility with these manufactories equipment.
Note: Because the authentication string is related to instance ID and VLAN ID, the command may cause recognizing
the equipment that with different instance and VLAN relation as in the same region. Before the command is executed,
make sure that instance and VLAN relation is accord for all the equipment. If there are more than one equipment
connected, all the connected ports should execute this command.
Example:
Configure the authentication string of partner port.
Switch(config)#interface ethernet 1/2
Switch(Config-If-Ethernet1/2)#spanning-tree digest-snooping
Switch(Config-If-Ethernet1/2)#
19.1.11 spanning-tree format
Command:
spanning-tree format {standard | privacy | auto}
no spanning-tree format
Function:
Configure the format of the port packet so to be interactive with products of other companies. The no
command
restores the default format.
Parameter:
standard: The packet format provided by IEEE
privacy: Privacy packet format, which is compatible with CISCO equipments.
auto: Auto identified packet format, which is determined by checking the format of the received packets.
Command Mode:
Port Mode
Default:
Auto Packet Format.