This is a physical layer issue so not a spanning tree issue which requires a running link connection to function at the link layer. Before going down the firmware release level path, ensure that any auto-negotiation of duplex and speed is disabled on both sides of the connection and manually configured the same speed and duplex on the OSA and switch. Make no assumptions. Explicitly disable and configure. If any administrative tool allows these settings to be queried or trace events can be generated that can provide additional information about what the firmware thinks is going on can provide insight. Problems with auto-negotiation are very common in these situations (between products from the same vendor let alone different vendors) and should be eliminated from the picture first. Even if it works in one setting (host configuration) it may not in the other (trunk configuration).
Harold Grovesteen
David Boyes wrote:
First thing to check is the Alcatel firmware release level. Several recent releases had serious problems with 802.1p trunk definitions.
Second, check the spanning tree resolution timeouts. Multiple VLANs on a single port is a pathological case for spanning tree design if it's implemented certain ways.
The link behavior makes me think it's a firmware thing. Something is really unhappy in the software there.
We're having more adventures setting up VSWITCHes. Our OSA-E's are configured 100Mb full duplex. Switches we're tried are Alcaltel 6624 and Alcatel 7700. Symptoms are the same - if the Alcatel switch port is configured as a trunk at full duplex, we can't get a link light. If the switch is half duplex we get the link light but can't talk through. If the switch port is defined as a normal "host" port at full duplex, the link light comes on and we can connect Linux guests to the outside (only on the VLAN specified on the switch for that port, of course).
This seems to be extraordinarily odd behaviour at the physical layer, occurring whether we have the OSA attached to the VSWITCH or anything else.
---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
