CIsco 1720 config for home use

still dosnet work.  The router pulls an IP from the CM.. hers Show interfaces out put:

Ethernet0 is up, line protocol is up
  Hardware is PQUICC Ethernet, address is 0004.df0c.eab9 (bia 0004.df0c.eab9)
  Internet address is 24.170.136.221/26
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 220/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half-duplex, 10BaseT
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Input queue: 1/75/46/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 17000 bits/sec, 26 packets/sec
  5 minute output rate 1000 bits/sec, 1 packets/sec
     11172 packets input, 705111 bytes, 0 no buffer
     Received 11000 broadcasts, 0 runts, 0 giants, 0 throttles
     28 input errors, 0 CRC, 0 frame, 0 overrun, 28 ignored
     0 input packets with dribble condition detected
     242 packets output, 23590 bytes, 0 underruns
     28 output errors, 2 collisions, 1 interface resets
     0 babbles, 0 late collision, 2 deferred
     28 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
FastEthernet0 is up, line protocol is up
  Hardware is PQUICC_FEC, address is 00b0.c289.e592 (bia 00b0.c289.e592)
  Internet address is 192.168.123.1/24
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, 10Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:08, output 00:00:09, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     278 packets input, 29873 bytes
     Received 81 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     210 packets output, 49417 bytes, 0 underruns
     0 output errors, 2 collisions, 1 interface resets
     0 babbles, 0 late collision, 1 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

Can you ping 24.170.136.193 from the router?
If so,
Try setting your default gateway to 24.170.136.193 :
no ip route 0.0.0.0 0.0.0.0 Eth 0
ip route 0.0.0.0 0.0.0.0 24.170.136.193

does it matter where i put these lines?
also where did you come up with .193?

That seemed to fix it. Threes just one problem, it seems slower than when i was using a linksys router. And almost all the time when I ping an address the first one or two tries time out but then it finishes. whats wrong?

I came up with .193 by looking at your subnet mask of the interface:
>Internet address is 24.170.136.221/26

The first address in that range is .193
Cable companies typically use the first address as the gateway.

The first one or two pings will time out quite often because the address is not in the arp cache.

As to it seeming slower, there's not much I can say..
Try this:
router#clear counters
[confirm] y

Then, keep an eye on these counters from show interface:
-->   28 output errors, 2 collisions, 1 interface resets
-->    28 lost carrier, 0 no carrier
If they keep going up, then you may need to call the ISP and make sure your MAC address is being recognized.

    2247236 packets input, 294056308 bytes, 0 no buffer
     Received 2034916 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     210655 packets output, 16904170 bytes, 0 underruns
     0 output errors, 6158 collisions, 0 interface resets
     0 babbles, 0 late collision, 13143 deferred


lota collisions. anything i can do to fix this?

about calling the ISP, i have switched my gateway device 5 times, and each one allways worked well except this one. Should I call anyway? I doupt they would support me cus I use my own hardware, i wouldnet even know what questions to begin to ask.

also, a firend said the speed issue coud be because im running in 1/2 duplex, can i set both interfaces to full?

Collisions are an integral part of half-duplex Ethernet.
Is this the WAN port or the LAN interface? Assuming WAN, you need to set at whatever the cable modem will support, else plug both the modem and the router into a switch that you can set to 10/full duplex.
Collisions are OK, and based on the percentage of total packets are well within reason. Deferred packets also are well within a reasonable percentage of total packets, unless you see dropped packets.

>switched my gateway device 5 times, and each one allways worked well except this one.
Not sure what you mean by "changing gateway device 5 times".  Do you mean 5 different type routers, and this Cisco is the only one that does not work well?
I don't think it is the full/half duplex issue.
Everything works, just seems sluggish?

>switched my gateway device 5 times, and each one allways worked well except this one.
yes, ive used a linksys, dlink, PC, and now this cisco as a net gateway. This cisco _does_ work , but is sluggish. My network is kinda a mess now and maybe that could be part of the problem...
              CM
                |
             Switch    
          |             |
      dlink        cisco
          |              |
      switch    10bT hub
     | | | | |           |
       PCs            PC


The speed issue could verry well be in that 10bT hub now that I think about it ( i completely forgot i was using it). Im using it to test this new cisco before I make it my main router. What you think?

How many IP addresses are you paying for from the cable provider? In your diagram you need at least two. If you don't have two, it's a wonder it works at all because the dlink and the cisco could both be using the same wan IP...

i get 7 IPs from my ISP. heh, yea i have a biz account.

Just checking...
Any progress?

well i tried a 100bT hub on the cisco, cant really tell any speed inprovements :-/

Heres the final running config, any last words Irmoore?

!
version 12.3
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname cisco1720
!
enable secret ---------------
!
memory-size iomem 25
no aaa new-model
ip subnet-zero
!
!
no ip domain lookup
no ip dhcp conflict logging
ip dhcp excluded-address 192.168.123.1 192.168.123.79
!
ip dhcp pool goodtimes
   network 192.168.123.0 255.255.255.0
   domain-name 1720.cisco
   default-router 192.168.123.1
   dns-server 207.69.188.185 207.69.188.186
   netbios-node-type h-node
!
no scripting tcl init
no scripting tcl encdir
!
!
!
!
interface Ethernet0
 ip address dhcp
 ip nat outside
 half-duplex
!
interface FastEthernet0
 ip address 192.168.123.1 255.255.255.0
 ip nat inside
 speed auto
!
ip nat inside source list 1 interface Ethernet0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 24.170.136.193
ip route 0.0.0.0 0.0.0.0 Ethernet0
ip http server
!
access-list 1 permit 192.168.123.0 0.0.0.255
snmp-server community public RO
snmp-server community priv RW
snmp-server contact pablo
snmp-server enable traps tty
banner motd ^CCisco 1720^C
!
line con 0
 exec-timeout 0 0
 password ------------------
 login
line aux 0
line vty 0 4
 password ----------------
 login
!
!
end

i think that fixed the slowness problem. thanks irmoore, theres no wonder your #1 here.