cisco router 2514 on comcast cable 2

[mikey030587]

So im really confused now. I recently got a cisco 2514 router. It has 2 db15 aux ports, 2 serial ports, 1 rj-45 console port, and last but not least 1 rj-45 aux port. I have comcast highspeed cable Internet. It provides the rj-45 connection, but im not sure what port on the router I will want to connect it to. I took the cisco courses and used the 2600 series router so go figure I decide to go with something less. And in the router config the 2 aux ports are the eth0 and eth1 if I remember correctly thanks in advance for any help.

 

[Minue]

Hello
You will need to buy 2 AUI transceivers.You can find them on Ebay.
Regards

 

[mikey030587]

OK and what is the rj-45 aux port next to the console rj-45 for. I thought it was to hook up the internet to. Or are you recommending the 2 aux transceivers because they are more reliable

 

[Minue]

Hello
It's not about reliablity.It's compatabilty.The AUI connector.Was introduced a long time ago when,other media types were on the market.This give companies an easy choice on which media to use.
As far as the rj-45 aux port goes.This one is for Modem connections.Nowadays it's use for remote management reasons.The only way to connect the 2612 to the cable modem is to use two AUI transcievers,or invest in another Router with 2 eth interfaces.The 806 or the 1605 are cheap and handy choices.
Regards

 

[plshlpme]

pretty much all 2500 routers came with AUI ports rather then RJ45. I used a couple 2514s for a while and had the converters on it so that i could use the ethernet ports.

You cannot use the AUX port to connnect to your cable modem.
Just like you cannot use the console port.

the converters are cheap though just check ebay..

 

[mikey030587]

Ok thanks guys, thats what I thought on the issue of the rj045 aux port. Also I got lucky they included the aui adapters phew now dont need to spend a fortune to get this working.

 

[mikey030587]

Ok so I got the router Up and running and used the aui converters and have link connection. AUI 0 goes to cable router and aui 1 goes to a switch. SO next I went in and configured them the aui 0 port I configured with the static ip that I was given. Then on aui I configured it to be my in house network. Changed the link status to be up. Then did the copy running-config startup-config command. I can ping my cable router but not any in house networks. Could you help me with this

 

[zinkann]

You may need to disable the firewall on the PC'S. May be...

 

[plshlpme]

are you sure your lan address on the router is in the same subnet as the pcs?

you dont have any duplex issues between the router and the switch that it is plugged into? (10 half)

can you ping the router or telnet to the router from any of the pcs?

 

[burtsbees]

router>en
router#conf t
router(config)#int e0
router(config-if)#ip add dhcp
or static IP, if this does not help...
router(config-if)#no shut
Did you do the "no shut" on the inside interface facing the LAN???
Post a config---I know plshlpme had a similar setup, and can perhaps post his config...
One more thing...is the cable modem in bridge mode???

Burt

 

[mikey030587]

Ok im testing this at home. Until I Get the right settings. My network setup is as follows

1. Comcast cable modem ip dynamically assigned
2. Linksys Router. Router Ip Dynamically assigned from comcast. DHCP Enabled. internet address 14.192.45.1
3. Cisco 2514 router connected to linksys. On AUI 0
4. Cisco 2514 Router connected to hp procure managed hub connected on eth 1
5 Computer connected to Hub

Configuration is as follows
Current configuration:
!
version 11.0
service udp-small-servers
service tcp-small-servers
!
hostname Good_Shepherd
!
!
!
interface Ethernet0
ip address 14.192.45.110 255.255.255.0
!
interface Ethernet1
ip address 192.168.2.1 255.255.255.0
!
interface Serial0
no ip address
shutdown
!
interface Serial1
no ip address
shutdown
!
banner motd ^Authorized access will result in immediate shutdown!!

'^C
!
line con 0
password admin
login
line aux 0
password admin
login
transport input all
line vty 0 4
password admin
login
!
end

 

[burtsbees]

Take the LinkSys out of the equation, then try it. Also, you will need NAT for anything in the LAN to access the internet...like this...
router>en
router#conf t
router(config)#access-list 1 permit 192.168.2.0 0.0.0.2553
router(config)#ip nat inside source list 1 int e0 over
router(config)#int e0
router(config-if)#no ip add
router(config-if)#ip add dhcp
router(config-if)#ip nat out
router(config-if)#exi
router(config)int e1
router(config-if)#ip nat in
router(config-if)#end
router#wr

If "ip add dhcp" does not work on interface e0, then make sure the modem is NOT in bridge mode, and put e0 in the subnet that the modem assigns, and if this is the case, take the NAT config out (no access-list 1, no ip nat inside source list 1...etc.).

Burt

 

[mikey030587]

Ok tried it but my cisco 2514 router isn't reconizing the nat or dhcp commands.

 

[burtsbees]

Post a sh ver.

Burt

 

[mikey030587]

Cisco Internetwork Operating System Software
IOS (tm) 3000 Software (IGS-IN-L), Version 11.0(22), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1998 by cisco Systems, Inc.
Compiled Tue 08-Dec-98 05:22 by jaturner
Image text-base: 0x030218C0, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c)XB2, PLATFORM SPECIFIC RELEASE SOFTWARE
(fc1)
ROM: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB2, PLATFORM SPECIF
IC RELEASE SOFTWARE (fc1)

Good_Shepherd uptime is 20 minutes
System restarted by reload
System image file is "flash:igs-in-l.110-22", booted via flash

cisco 2500 (68030) processor (revision L) with 2048K/2048K bytes of memory.
Processor board ID 14712846, with hardware revision 00000000
Bridging software.
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
2 Ethernet/IEEE 802.3 interfaces.
2 Serial network interfaces.
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102

 

[burtsbees]

Start over...
Good_Shepherd>en
Good_Shepherd#erase start
"You sure about that?"y<enter>
"Erase all config files from NVRAM?"y<enter>
Good_Shepherd#reload

decompressing image blablabla###########################
########################################################
########################################################

"Do you want to enter the blablabla?"n<enter>
"Do you want to terminate auto-blablabla?"y<enter>
<enter>
<enter>
<enter>
router>en
router#conf t
router(config)#hostname Good_Shepherd
Good_Shepherd(config)#banner motd *Unauthorized access will result in Immediate Death!*
Good_Shepherd(config)#int e0
Good_Shepherd(config-if)#descr To Cable Modem
Good_Shepherd(config-if)#ip add 192.168.1.2 255.255.255.0
Good_Shepherd(config-if)#no shut
Good_Shepherd(config-if)#exit
Good_Shepherd(config)#int e1
Good_Shepherd(config-if)#descr To Internal LAN
Good_Shepherd(config-if)#ip add 192.168.2.1 255.255.255.0
Good_Shepherd(config-if)#no shut
Good_Shepherd(config-if)#exi
Good_Shepherd(config)#ip route 0.0.0.0 0.0.0.0 e0 192.168.1.1
Good_Shepherd(config-if)#exit
Good_Shepherd(config)#line con 0
Good_Shepherd(config-line)#logg sync
Good_Shepherd(config-line)#password blabla
Good_Shepherd(config-line)#login
Good_Shepherd(config-line)#exit
Good_Shepherd(config)#line vty 0 4
Good_Shepherd(config-line)#logg sync
Good_Shepherd(config-line)#password blabla
Good_Shepherd(config-line)#login
Good_Shepherd(config-line)#exi
Good_Shepherd(config)#enable secret blablabla
Good_Shepherd(config)#exi
Good_Shepherd#wr

This is assuming that the cable modem will have a private IP address on the LAN side of 192.168.1.1, and it is "full" mode (not bridge or transparent mode, but normal operating mode). I am not sure what yours may be, but it may require a crossover cable to the router, and it may also require the router interface to be 10/half, in which case...
Good_Shepherd#conf t
Good_Shepherd(config)#int e0
Good_Shepherd(config-if)#duplex half
or it may be
Good_Shepherd(config-if)#half-duplex
Good_Shepherd(config-if)#speed 10
Good_Shepherd(config-if)#end
Good_Shepherd#
Try this...meanwhile, perhaps plshlpme can post his setup and config...

Burt

 

[plshlpme]

i dont know if ios 11 even supports nat..
you should really get yourself a copy of an ios in the 12 series to make sure you can use all the features that you will need for this to work..

as Burt said though you should keep the linksys out of the picture and just use the cisco as the router.

until you get the ios updated though im not sure this is going to do you much good..

 

[mikey030587]

OK thanks guys. Also I was looking aound and the page on cisco I found for IOS Update required a support accound and it looks like you have to have special privilages. But is there anywhere I can get the IOS Update for free.

 

[zinkann]

make sure you have a default route pointing to the linksys router (192.168.1.1) ip route 0.0.0.0 0.0.0.0 192.168.1.1

 

[mikey030587]

Ok Burt, thanks for the help. On eth0 Where I have my cable modem you said to have an ip of 192.168.2.1. Is that just the ip for the router. Cause at my home where im testing this comcast dynamically gives me an ip, but the location where im installing the router I have a static. So would I just have to reajust the numbers you have given me to fit the comcast ip's on eth0??