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тАО09-15-2010 12:00 PM
тАО09-15-2010 12:00 PM
Solved! Go to Solution.
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тАО09-16-2010 02:51 AM
тАО09-16-2010 02:51 AM
Re: Mac-Address lost
What type of interface is it and what firmware revision are you running on your 5406?
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тАО09-16-2010 07:08 AM
тАО09-16-2010 07:08 AM
Re: Mac-Address lost
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тАО09-16-2010 11:11 PM
тАО09-16-2010 11:11 PM
Re: Mac-Address lost
you need "portfast" to skip the listening/learning state of stp.
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тАО09-17-2010 03:42 AM
тАО09-17-2010 03:42 AM
SolutionHowever, it it doesn't relearn it, it's possible that the client has stopped transmitting. If the problem is specific to the client, I'd be looking at firmware updates for that too.
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тАО09-20-2010 01:27 PM
тАО09-20-2010 01:27 PM
Re: Mac-Address lost
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тАО09-20-2010 10:49 PM
тАО09-20-2010 10:49 PM
Re: Mac-Address lost
You are right, in the 5400 CLI guide i find no reference to portfast (my history is from cisco ofcourse).
you need to configure an adminedge-port:
Syntax: [no] spanning-tree
Enable admin-edge-port on ports connected to end nodes.
During spanning tree establishment, ports with adminedge-port enabled transition immediately to the
forwarding state.
What possibly happens is
- the port comes up
- the client issues a dhcp request
- but the switchport is not yet in the forwarding state
- so the packet is lost.
- the port enters the forwarding state
- but the client doesn't resend subsequent dhcp requests (this is a client issue)
- the adress flush timer on the switch expires
- and the adress is flushed.
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тАО09-20-2010 11:03 PM
тАО09-20-2010 11:03 PM
Re: Mac-Address lost
But when a port comes up it will still go throug blocked, listening, learning, forwarding states.
this describes the bpdu-filter from the Adv Traf Gde:
- Ports configured with the BPDU filter mode remain active (learning and forward frames); however, spanning-tree cannot receive or transmit BPDUs on the port. The port remains in a forwarding state, permitting all broadcast traffic.
- The bpdu-filter option forces a port to always stay in the forwarding state and be excluded from standard STP operation.
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тАО09-21-2010 09:27 AM
тАО09-21-2010 09:27 AM