Allied Telesis SB251-08 manual Features in SB251-07, PCR Module STP, SWI Level

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Patch SB251-08 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches

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Features in SB251-07

Patch file details are listed in Table 2:

Table 2: Patch file details for Patch SB251-07.

Base Software Release File

sb-251.rez

 

 

Patch Release Date

22-Apr-2003

 

 

Compressed Patch File Name

sb251-07.paz

 

 

Compressed Patch File Size

86524 bytes

 

 

Patch SB251-07 includes all issues resolved and enhancements released in previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 03399

Module: STP, SWI

Level: 1

With this enhancement:

•STP and Port Trunking now work together correctly.

•BDPU Forwarding is implemented. The BPDU Forwarding feature configures the switch to forward all received STP BPDUs. Under normal circumstances, the switch will not forward any received STP BPDUs, even if STP is enabled.

This implementation is for standard STP, it does not guarantee that RSTP and port trunking will work correctly together in all situations.

STP does not update the pathcost for trunked ports, which means that a trunk group has the same pathcost as a single port. This may cause STP Blocking where it is not expected. To overcome this, the user should explicitly set the pathcost for the trunk group ports to be less than the default value for a single port.

STP reconfigures if the Master port in a trunk group goes link down. If the Master port in a trunk group goes link down, and a Non-Master port is still link-up, then STP will go through the Listening>Learning>Forwarding reconfiguration on the new Master port. This means that there will be a switching outage on the trunk group whilst the new Master port transitions to the Forwarding state.

Command handler changes:

•The PORT parameter of the CREATE SWITCH TRUNK PORT and ADD SWITCH TRUNK PORT commands must specify ports that have identical STP port configurations.

•The ENABLE STP and ENABLE STP PORT commands cannot be used to enable STP operation on a port that has been disabled from STP operation because of Port Trunking. Only the Master port in a trunk group actively participates in the STP algorithm. Non-Master ports in the trunk group are in the STP Disabled State.

•The output for the SHOW STP PORT command has been modifed so that Non-Master Ports in a trunk group do not take part in the STP algorithm.

•The output for the SHOW STP PORT command has been modified so that it displays whether a user has set the PATHCOST value, or if it was auto-configured.

Patch SB251-08 for Software Release 2.5.1 C613-10361-00 REV H

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Contents Introduction PCR Module SWI Level Features in SB251-08PCR Module STP, SWI Level Features in SB251-07PCR Module SWI, Sysr Level Features in SB251-06Features in SB251-05 PCR Module SWIFeatures in SB251-04 Features in SB251-03 PCR Module TCP Level3PCR Module GUI Level2 PCR Module Firewall Level PCR Module CORE, SWI LevelPCR 03071 Module Core Level PCR Module IPG, SWI LevelPCR Module SWI Network affecting No Features in SB251-02PCR Module Switch Network affecting No PCR 02574 Module Dvmrp Network affecting NoPCR 03047 Module Core Network affecting No PCR Module SWITCH, IPG Network affecting NoPCR Module Firewall Network affecting No PCR Module QOS Network affecting NoFeatures in SB251-01 PCR 02568 Module Core Network affecting NoPCR 02396 Module Dhcp Network affecting No PCR Module IPG, SWI Network affecting No AvailabilityPCR Module Ospf Network affecting No PCR Module SWI Classifier Network affecting NoPatch Release Note
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