Q-NOTE QN-7000HX Guide de l'utilisateur télécharger pdf (Page 64)

Open Problem Reports and Feature Exceptions

page 64 OmniSwitch 6600/7000/8800—Release 5.1.6.R02

PR 87565

The BPDU switching flag is not applied after reboot.

Workaround: After reboot, typing the command again will solve the problem.

PR 89086

The force version parameter is not supported.

Workaround: Use a protocol identifier, i.e. protocol commands and variables, instead.

PR 89316

With every link-up, a BPDU packet with the Root BridgeID of 0xffff is sent to elicit a BPDU reply from

the adjacent switch in the current AutoEdge Detection mechanism.

Workaround: Setting the stpni_useWorstRootBridgeID=0 in NiD/jointfilesconvert/359063/bg, and then disabling/re-enabling the

Spanning Tree Protocol instance (these steps are not expected to be performed by the customers, but by

Alcatel’s Automation testers who need to setup ANVL test cases).

PR 90297

On an OS7000 series switch, the slow convergence time is basically due to the circulation of old 'good'

spanning tree vectors in the network when a root switch is powered off. The performance parameter,

maxAge' for CST and 'hop count' for MSTIs are defined precisely to address this issue by aging out this

old information. The set up where this problem was detected has the default values for the above perfor-

mance parameters and if these parameters are tuned to reflect the size of the network, the convergence

time can be reduced substantially.

Due to a discrepancy in the 802.1s 2002 protocol specifications, boundary ports could transition into

forwarding much faster than they should and may create loops.

Workaround: 1) Use single MSTP region as much as possible. 2) Tune the performance parameters

maxAge and hop count to optimal values for the network.

VLANs

Feature Exceptions

• The number of VLANs on an OS6600 series switch with spanning tree is 128 and without spanning

tree is 256.

• The number of VLANs on an OS7000/8800 switch with spanning tree is 256 and without spanning tree

is 1024.

• User-Defined (Custom) VLAN Rules on OS7000/OS8800—Contact Customer Support for supported

configurations.

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Q-NOTE QN-7000HX Guide de l'utilisateur Page 64