CAT 6 100mbps reaching 100m

[dkblee]

Hi!

My LAN ethernet cabling is reaching 100m. So if i'm going to extend it using a cisco switch(as a repeater). Would it affect the existing VLAN? What would be the most appropriate switch to use here? If let say i got 20 LAN points which are going to exceed 100M, do i need to get a 24 ports switch or 48 ports to interconnect from the existing switch to the endpoint? How do i interconnect the "repeater switch" with the existing switch? Thks!

[ryan101178]

If you are connecting 20 ports and need room for growth, I would suggest a 3550-48-SMI. The interconnectivity between the new switch and your existing switch would depend on the type of ports available on the existing switch and the type of media between the two locations. What speed and media type do you plan on using.

More information on your VLAN topology would be required to provide an accurate answer to the VLAN setup.

[dkblee]

Hi!

For the existing switch i'm using 2950 with 24xports of 10/100mbps. The media used is CAT6 AMP normal copper cable. I'm planning to use 10/100mbps.

For the VLAN, there are about 7 vlan and there are some restriction between them as ACLs are configured on some of the router's interfaces.

As for the new switch, can i get those unmanaged switch which is cheaper? will it be any problem if my existing switch is configured with VLAN.

As for the connection for the new switch, can i say that if i got 20 new LAN points, then i'll need 40 ports on the new switch to interconnect with the exiting switch ? or is there any better way/option?

[ryan101178]

You would not need a switch with double the port density. Basically the 20 connections would connect to the new switch and then in your case because you are using copper, a cross-over connection would be needed between the new switch and the 2950. If you the new switch is unmanaged, the port on the 2950 providing connectivity to the new switch would be set up in VLAN 7 as and access port. That would then tag all traffic from those 20 connections with the correct VLAN information.

If cost is a factor and you want to stay with Cisco, the Cisco 2950-24 or -48 would probably be the least expensive device that is still supported by Cisco.

[dkblee]

Why vlan 7? any particular reason? do i need to do trunking for that port?

Thks!

[ryan101178]

I am sorry I just re-read your post and you said 7 VLANS and I thought it was all the users were on VLAN 7. To answer your question. If all 20 connections are going to be on the same VLAN, you would NOT need to make the link a trunk. You only need trunks if their are going to be multiple VLANS on the new switch. I am assuming that all 20 connections are just going to pass through the new switch and be on the same VLAN. If that is the case, then the port on your existing 2950 can be set up as an access port and you can assign that port to any VLAN you want. For example if you want all 20 of these connections to be on VLAN 3, simple add the port to VLAN 3 and as packets come in they will be tagged with the appropriate VLAN information.