I have 3 Catalyst 3500's on one IP subnet. All users on the switches are in the default VLAN1. I am in need of another switch and am being sent a 3com by headquarters. My question is this: How will the Cataylst switches and the 3com work together? Will this affect spanning tree?
802.1d is the industry standard for Spanning-Tree. Your previous question was concerning if 3com and Cisco would play fine together, well they should but if you are doing any VLANS just make sure 3com trunks / Cisco trunks are set up for Dot1.q encapsulation (for vlans).
Keep in mind that if you start doing VLANs on the Cisco side, that you will have a Spanning Tree per VLAN (PVST+). 3Com only does Spanning Tree at the switch level, on VLAN 1. So if you have to implement your redundant connection through the 3Com switch, this complicates matters.
If you keep the 3Com switch single-connected, then 802.1q trunk to it, it'll work fine. Let the Ciscos handle the redundancy, they're more flexible.
Also keep in mind that whereas VTP automates VLAN management somewhat on Cisco switches, on the 3Coms you must define each VLAN and associated 802.1q tag on each switch.
And assigning ports to VLANs is done in two places in the 3Com GUI: one place handles 802.1q tagged ports; the other handles untagged VLAN assignment per port. A little confusing and tedious, but doable...
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.