06-13-2008 02:37 PM - edited 03-03-2019 10:21 PM
Just got a 2620XM which wic do i need to plug this guy to a cbale modem?? thanks
06-13-2008 05:56 PM
There is a cable DOCSIS WIC (might be a HWIC I can't remember) or you can just use your current cable modem and plug it into one of the fast ethernet ports, you may need to buy a module with an aditional fast ethernet port.
06-13-2008 09:24 PM
Can i use the Cisco NM-1FE-TX that is a fast ethernet 100mb to connect my modem?? so it will be like
Cable Modem > Cisco NM-1FE-TX and
From the interagted ethernet to 2950 switch???
06-13-2008 10:54 PM
yep that's what I mean :)
Personally i'd do it the other way around and have the cable modem going into the integrated ethernet and from your NM-1FE-TX to your 2950. It just seems more logical to me :P
06-14-2008 04:14 AM
But my question is will the NM-1FE-TX fit in the 2620xm and will it give me the 100Mb/s?????
06-14-2008 06:48 AM
http://www.cisco.com/en/US/products/hw/routers/ps274/products_data_sheet09186a0080091b89.html
That pages says yes it should work and it also provides a list of the other network modules that should
06-15-2008 06:35 AM
Another option is not to buy a NM or WIC at all and configure it as a router-on-a-stick.
Configure the onboard FE with multiple dot1q VLANs, one for inside and one for outside traffic.
Configure a trunk on the 2950 to connect to the router, and one access port for the cable modem.
Router config:
interface f0/0
no shut
no ip address
interface f0/0.100
description outside from cable modem
encaps dot1q 100
ip address x.x.x.x 255.255.255.x
! assigned by cable company
ip nat outside
interface f0/0.200
description LAN to hosts
encaps dot1q 200
ip address 192.168.1.1 255.255.255.0
ip nat inside
! NAT and firewall rules as needed...
2950 switch:
int range f0/1-22
description inside hosts
switchport mode access
switchport access vlan 200
int f0/23
description Cable modem
switchport mode access
switchport access vlan 100
int f0/24
description trunk to router
switchport trunk encaps dot1q
switchport mode trunk
switchport trunk allow vlan 100,200
int vlan 200
descr switch access from inside
ip address 192.168.1.254 255.255.255.0
no shutdown
ip default-gateway 192.168.1.1
06-15-2008 08:34 PM
doing it that way does attract a slightly speed penatly though doesn't it?
06-15-2008 10:08 PM
In theory, as traffic is going both directions on the same physical interface.
In practice, with a 100 mbits/s FastEthernet trunk and a cable modem as the WAN link, you won't see any difference. Typical download from a cable modem is under 10 mbits/s and upload significantly less. This limits the routed traffic to something around 10% of wire speed. If you were pushing full duplex near wire speed, it would be a concern, but not with a cable modem feed.
LAN traffic is switched on the 2950 and doesn't touch the router, so no difference.
It consumes one port on the switch for the cable WAN feed, that's the only real penalty in this scenario.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide