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Home > Archive > CCNA > July 2004 > Interface problem
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| Warfare 2004-07-20, 4:10 pm |
| I got my home-lab set finally. and I am having some problem I am not able to troubleshoot (still studying semster 1 cisco academy but just messing around to prepare for later stage)
2x 2501 router
1x switch 1900
1x ADSL/Hub/ Netgear router
===================
1st Floor :
=================
ADSL hub 192.168.0.1/24
host1 192.168.0.2/24
host2 192.168.0.3/24
Cisco 2501 (Alpha)
DCE clock rate 64000
E0 192.168.0.10/24
S0 192.168.2.1/24
Cisco 2501 (Omega)
S0 192.168.2.2/24 DTE
E0 192.168.4.1/24
=================
Ground Floor:
==================
Catalyst 1900 (Zen)
192.168.4.2/24
host3 192.168.4.3/24
host4 192.168.4.4/24
=======================
Router Alpha is configured properly for rip v2and all interfaces are up and can be pinged and S0 interface of Omega can be pinged too.
but when I am configuring omega i cant get Ethernet0 to work i cant ping it too. its connected to a host.
this is the output.. I hope someone has a clue why this portion of the network is down
Router Omega:
Ethernet0 is up, line protocol is down
Hardware is Lance, address is 0010.7b3b.5bba (bia 0010.7b3b.5bba)
Description: connected to Cisco1548
Internet address is 192.168.4.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 128/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:07, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
992 packets output, 59759 bytes, 0 underruns
992 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
992 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out | |
| smrkdown 2004-07-20, 6:40 pm |
| Try a new cable. | |
| Warfare 2004-07-20, 7:40 pm |
| ehm ...
what a shameful mistake. I swear I thought this cable was good and working. I Didn't even think about getting my cable tester! I keep telling my young brothers that most network problems are physical layer problems 
I guess the cisco equipment and configuration got me a bit intimidated  | |
| Warfare 2004-07-20, 9:39 pm |
| the weird thing is
when one of the routers is connected with a good cable to the ADSL router, the interface ethernet 0 is up and line is up..
if i connect it to a host with a good cable, the line is down. I was just testing one router connected to dsl, and with serial to second router that is connected as a means of tesing to a host (will be later connected to a switch though)
what am i doing wrong here? | |
| smrkdown 2004-07-20, 9:49 pm |
| When you connect a host directly to an router's ethernet interface, you need to use a crossover cable. Your ADSL router more than likely has a built-in hub or switch and would use a typical straight-through cable. | |
| Warfare 2004-07-21, 7:30 pm |
| aha.. will remember that.
I've connected them all now and somewhere in Router 1 (Alpha) I'm doing something wrong.
Internet
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host A -> DSL/HUB -> E0(Router1 Alpha)S0 -> S0(Router2 Omega)E0 --> Switch --> Host B
Logged in on the switch. I could ping the connected Router2 E0 and S0 interface , Router1 E0 and S0 interface. but not the DSL hub interface? any hints?
this is the routing table of Router1
R 192.168.4.0/24 [120/1] via 192.168.2.2, 00:00:08, Serial0
C 192.168.0.0/24 is directly connected, Ethernet0
192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.2.2/32 is directly connected, Serial0
C 192.168.2.0/24 is directly connected, Serial0
Router2 Omega
Gateway of last resort is not set
C 192.168.4.0/24 is directly connected, Ethernet0
R 192.168.0.0/24 [120/1] via 192.168.2.1, 00:00:21, Serial0
192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.2.0/24 is directly connected, Serial0
C 192.168.2.1/32 is directly connected, Serial0 | |
| smrkdown 2004-07-21, 8:42 pm |
| Hmmm. Not sure. | |
| Warfare 2004-07-21, 10:34 pm |
| I found it finally!
Because the ADSL hub is connected to router1. I had to enable RIPv2 on my netgear ADSL hub.
thanks everyone for their hints |
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