Spanning-tree MST Port State Desg/DWN?

Unanswered Question
Mar 3rd, 2010

Hi Everyone,

We have are using MST in our local LAN with two redundant gateways RTR-006 and RTR-005.  The access switches are Non-Cisco and is connected in a dual-uplink (triangle) configuration.  In a recent audit that we conducted, we observed the following status.  Does anyone know what is indicated by a Desg/DWN status.  We are expecting these ports to be DESG FWD such as the case of RTR-005. Right now we are re-checking port costs etc... But Even so, the Status should either be Desg FWD or Alt BLK. I have never since this status before and have yet to find a reference for this.  Thanks in advance for any clarification and information you may share.

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These captures are for two access switches, one connected to G9/32 of both routers and the other in G9/37, only one of them have these state. The access switches which are Non-Cisco devices are displaying the correct status for their uplinks., Root/FWD and Alt/BLK.

RTR-006#sh span mst | in Gi9/32

RTR-006#sh int desc | in MGWVAL2

Gi9/32                        up            up      MGWVAL2-ESA24-0-ETH1

Gi9/37                        up            up      MGWVAL2-ESA24-1-ETH1

RTR-006#sh span mst | in Gi9/32

Gi9/32                         Desg DWN 20000    128.2080 P2p

Gi9/32                          Desg DWN 20000    128.2080 P2p

RTR-006#sh span mst | in Gi9/37

Gi9/37                          Desg FWD 200000    128.2085 P2p

Gi9/37                          Desg FWD 200000    128.2085 P2p

RTR-005#sh int desc | in MGWVAL2

Gi9/32                        up            up      MGWVAL2-ESA24-0-ETH0

Gi9/37                        up            up      MGWVAL2-ESA24-1-ETH0

RTR-005#sh span mst | in Gi9/32

Gi9/32                          Desg FWD 200000    128.2080 P2p

Gi9/32                          Desg FWD 200000    128.2080 P2p

RTR-005#sh span mst | in Gi9/37

Gi9/37                          Desg FWD 200000    128.2085 P2p

Gi9/37                          Desg FWD 200000    128.2085 P2p

Thanks,

Ron

I have this problem too.
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