Very recently , we have introduced second 6509 on our Network for Redundancy & Load Balancing function. The Switches in Remote locations (3548 with GBIC Uplink ) have connections to both 6509's . we have made second 6509 as Root Switch for some of the Vlan's . Now the users connected in root Vlan's of second 6509 are experiencing problems . For example , when they ping any server or printer , after 20 or 30 Requested timedout , it replies back and printers also the same case . Occasionly , We have to restart the printers to get the Network connectivity . Sometimes users connected in same Vlan can't able to ping each other or sudden loss of Network connectivity while working . What could be the problem?
It sounds like you haven't changed any port costs. One thing you might want to try is changing the port costs on the switch interfaces pointed towards the root switch. If not you could just be experiencing long convergence from all the spanning tree events. If you watched the switches you would probably see them constantly switching between blocking and forwarding and never really stabilizing. Make sure you fully understand the spanning tree algorithm. Any discrete math book should explain it.
Where are the gateway routers for these vlans? Are the 6509s running msfc's? Is the router for the vlans that are using the new 6509 on that switch or still in the old one? Is there a full trunk (all vlans) between the two 6509s?
Sounds well. What we did was , for some of the Vlan's we made 2nd 6509 as root Switch , but we did not set any port cost . How to set the port Cost ?. Is there any configuration change required at edge Switch level (3548) ?.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.