with the lowest MAC address will then become the root device.

 

 

Enter a value from 0 - 65535.

 

 

Remember that the lower the numeric value, the higher the priority.

Hello Time

2

Time interval (in seconds) at which the root device transmits a

 

 

configuration message.

 

 

The minimum value is 1.

 

 

The maximum value is the lower of 10 or

 

 

[(Max. Message Age / 2) -1].

Forward Delay

15

The maximum time (in seconds) the root device will wait before

 

 

changing states (that is, listening to learning to forwarding). This delay

 

 

is required because every device must receive information about

 

 

topology changes before it starts to forward frames. In addition, each

 

 

port needs time to listen for conflicting information that would make it

 

 

return to a blocking state; otherwise, temporary data loops might result.

 

 

The maximum value is 30.

 

 

The minimum value is the higher of 4 or

 

 

[(Max. Message Age / 2) + 1].

Max (Message) 20

The maximum time (in seconds) a device can wait without receiving a

Age

 

configuration message before attempting to reconfigure. All device

 

 

ports (except for designated ports) should receive configuration

 

 

messages at regular intervals. Any port that ages out STA information

 

 

(provided in the last configuration message) becomes the designated

 

 

port for the attached LAN. If it is a root port, a new root port is selected

 

 

from among the device ports attached to the network.

 

 

The minimum value is

 

 

the higher of 6 or [2 x (Hello Time + 1)].

 

 

The maximum value is

 

 

the lower of 40 or [2 x (Forward Delay - 1)].

GMRP*1

Disabled

GARP Multicast Registration Protocol (GMRP) allows network devices

 

 

to register end stations with multicast groups. If GMRP is globally

 

 

enabled for the switch, then you can individually enable or disable

 

 

GMRP for a specific port. See “4.5.4.1 VLAN Port Configuration”.

 

 

IGMP and IGMP Snooping also provide multicast filtering. For

 

 

multilayer mode, the full IGMP protocol set is automatically

 

 

enabled/disabled along with DVMRP. (See “6.4.2 IGMP Protocol”,and

 

 

“4.5.5 Configuring IGMP Snooping”.)

GVRP

Disabled

GARP VLAN Registration Protocol (GVRP) defines a way for switches

 

 

to exchange VLAN information in order to register VLAN members on

 

 

ports across the network. This function should be enabled to permit

 

 

automatic VLAN registration, and to support VLANs which extend

WGS3 Layer 3 Switch User’s Manual

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