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re: Trouble with Cisco switch
Posted on 9/16/16 at 2:48 pm to triggs85
Posted on 9/16/16 at 2:48 pm to triggs85
Is this shitty diagram what you have, in a nutshell?
If so, when this is broken, do you have any logs showing any issues?
Are the users and server on separate VLANs, or is it one large broadcast domain?
When it's broken, can the users still reach the internet? (ping 8.8.8.8) DNS can be hosed but internet access is still there. If they can't ping out to the internet without DNS, then the links between the two unmanaged switches and the managed switch are likely having issues. This is especially true if the two unmanaged switches are daisy chained together rather than separately plugged into the managed switch
If so, when this is broken, do you have any logs showing any issues?
Are the users and server on separate VLANs, or is it one large broadcast domain?
When it's broken, can the users still reach the internet? (ping 8.8.8.8) DNS can be hosed but internet access is still there. If they can't ping out to the internet without DNS, then the links between the two unmanaged switches and the managed switch are likely having issues. This is especially true if the two unmanaged switches are daisy chained together rather than separately plugged into the managed switch
This post was edited on 9/16/16 at 2:58 pm
1
Posted on 9/22/16 at 8:45 am to Hulkklogan
When it fails there is No internet access nor network access...however If we use a secondary public dns (8.8.8.8) then we regain internet access... no seperate vlans... the unmanaged switches are on seperate homeruns.... it happened again today , however this time only one of the unmanaged switches went down... also I've noticed that one computer on the side that went down is connected but the connection is so slow to connect that it's unusable.
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