I have recently purchased 4 x 3550 24 PWR smi switches. i have followed the installation instructions and followed the web site manuals.
I have kept the switches out of the network for 2 weeks whilest i learn about them more.
I have recently moved the switches live and one of the switches is located in an area the has constant power failures. when that 1 switch cuts out the whole network crashes although the other three are working.
i have made a cluster of the 4 switches and made the main switch in the server room the command switch. I didnt make any vlans as yet and no other settings have really changed. so i have now removed all switches from the network again until i can get this working. I need to be able to have the network up and running if one of the switches fall out without the whole network crashing.
It sounds to me like a spanning tree issue as well. One recommendation would be to have all your switch's on UPS power. It is a relativly cheap investment to protect your infastructure and save on downtime.
I worked out the problem. It was so simple at teh end. one of the cross cables i had inplace was not crossed and it was causing a problem with the 3com switch that was on the other side of the network. it was causing all trafic to go through the one switch that i switched off. so i lost all but the servers and router.
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.