I currently have a T1 internet line with a Cisco 1720 router (Came with ISP), and I have a spare Cisco 2610. I am trying to configure this spare router exactly as the 1720 router, and when I plug the cable to this spare router WIC DSC T1 card, the light turn green, so the serial link is OK. I plug a pc to the router ethernet port, and I was able to ping the router e0 ip address. However, I was not able to ping the ip on the serial0 interface and couldn't get out to the internet. Why can't I even ping the Serial0 interface ip address? I compare the configuration on my Cisco 1720 and Cisco2610, and they are exactly the same? Did I configure something wrong on my Cisco router (I made up the ip address, not the real one assigned by my ISP)? His is a "Show Version" and "Show Running-Config" on my Cisco 2610 router. Please tell me what I did wrong.
CISCO#sh ver Cisco Internetwork Operating System Software IOS (tm) C2600 Software (C2600-IS-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Tue 07-Dec-99 02:21 by phanguye Image text-base: 0x80008088, data-base: 0x80C524F8
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
MRBI uptime is 3 days, 33 minutes System returned to ROM by power-on System image file is "flash:c2600-is-mz_120-7_T.bin"
cisco 2610 (MPC860) processor (revision 0x203) with 30720K/10240K bytes of memory. Processor board ID JAD03423750 (2465751866) M860 processor: part number 0, mask 49 Bridging software. X.25 software, Version 126.96.36.199 Ethernet/IEEE 802.3 interface(s) 1 Serial network interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
CISCO#sh run Building configuration...
Current configuration: ! version 12.0 service timestamps debug uptime service timestamps log uptime service password-encryption ! hostname CISCO ! logging buffered 4096 debugging enable secret 5 $1$2sq5$NsoY35XtYFWabcdpAN2xT0 enable password 7 151F1E0011111A20253A3B76475E ! ! ! ! ! memory-size iomem 25 ip subnet-zero ip name-server 188.8.131.52 ip name-server 184.108.40.206 ! ! ! ! ! interface Ethernet0/0 ip address 220.127.116.11 255.255.255.0 no ip directed-broadcast ! interface Serial0/0 ip address 18.104.22.168 255.255.255.252 no ip directed-broadcast no fair-queue ! ip classless ip route 0.0.0.0 0.0.0.0 22.214.171.124 no ip http server ! ! line con 0 transport input none line aux 0 line vty 0 4 password 7 04561E0BBB284D4A04100B login ! end