252CHAPTER 9: BRIDGE-WIDE PARAMETERS

bridge display

3500

9000

9400

3900

9300

Displays bridge statistics and configuration information including Spanning Tree Protocol (STP) parameter values.

Valid Minimum Abbreviation

b d

Fields in the Bridge Display

Field

Description

 

 

addressCount

Number of addresses in the bridge address table at the

 

point in time in which you are viewing it. This value

 

fluctuates but the highest value reached is recorded in the

 

PeakAddrCount field.

addrTableSize

Maximum number of addresses that can be stored in the

 

bridge address table. For CoreBuilder® switches, the value

 

is 32K. For SuperStack® II Switches, the value is 16K.

addrThreshold

Configurable reporting threshold for the total number of

 

addresses known on this bridge. When this threshold is

 

reached, the system generates the SNMP trap

 

addressThresholdEvent. The range of valid values for

 

setting this object is between 1 and 1 plus the maximum

 

table size. To configure this value for the 3500 and 9000

 

L3 modules, see “bridge addressThreshold” later in this

 

chapter. This option is not available for the 3900, 9300,

 

9400 and 9000 L2 modules at this release.

agingTime

Configurable time period in seconds that the bridge uses

 

to age out dynamic addresses except when a topology

 

change has occurred. (After a topology change, the

 

bridge uses the value shown in the forwardDelay field

 

instead until it receives configuration messages without

 

the topology change flag set). The default value for

 

agingTime is 300 seconds. The acceptable range is

 

10 – 1,000,000. You can also enter 0 to disable aging. To

 

configure this value, see “bridge agingTime” later in this

 

chapter.

bridgeFwdDelay

Configurable time period in seconds that the bridge

 

spends in each of two states — listening and learning —

 

before it transitions to the forwarding state, provided that

 

the bridge is the root bridge. (If the bridge is not the root

 

bridge, the bridge uses the value shown in the fwdDelay

 

field that is assigned to it by the root bridge.) The default

 

value is 15 seconds. The acceptable range is 4 – 30

 

seconds. To configure the bridge forward delay, see

 

“bridge spanningTree stpForwardDelay” later in this

 

chapter.

Page 252
Image 252
3Com 3500 manual Bridge display, Valid Minimum Abbreviation Fields in the Bridge Display