Hi, I have a question about CISCO 1841 router.

[Soon Kwan Kwon]

I have 4 devices which are named 1841.

But, I have trouble handling these..

To help my question, I suppose that router's name is set A, B respectively.

A (DCE) ------- (DTE) B (slot0 ,1 --> WIC-1T)

Now, I connected routers upper contents.

But WIC-1T's CONN LED does not shining...

I did below following steps...

1. I did commands in the routers : no shutdown, encapsulation ppp, clock rate 115200 (In this case, I designated at DCE)

2. Change another cable which was NEW one.

3. Change another router (Of course WIC-1T is put in)

I really don't know what can I do...to perform it.....

Ah... plz response my question...

Thank you.

Regards,

[johnlloyd_13]

hi,

could you use the other WIC slot and see if that works?

please post show diag from both routers A and B.

[Soon Kwan Kwon]

Here's A and B (show diag)

[mfurnival]

Can you also provide the output of show controllers from each device?

And also a "show run interface Serial..." for each interface?

Have you tried encapsulation HDLC?

[Soon Kwan Kwon]

Thank you contact me.

Here is "show controllers" and "show run interface serial"

[Soon Kwan Kwon]

And I did "show ip interface brief" command.

Router#show ip int b
Interface                    IP-Address      OK? Method Status                Protocol
FastEthernet0/0        unassigned      YES NVRAM  up                     down
FastEthernet0/1        unassigned      YES NVRAM  up                     down
Serial0/0/0                unassigned      YES unset      down                 down
Serial0/1/0                unassigned      YES unset      down                 down
Router#

I definitely "show down" at f0/0, f0/1, s0/0/0, s0/1/0

But, only f0/0, f0/1 were up. 

I don't know why Serial does not changed down to up

Hmmm....

It is really difficult to me ...

The harder study in network, the more difficult...

Anyway! 

Please reply me!

Regards,

[johnlloyd_13]

hi,

could you connect the serial cross cable, assign a /30 IP, assign a clock rate of 64000 on the router that has a DCE end of the serial cable and do a no shutdown on the serial ports on both routers.

post the show ip interface brief, show controller serial 0/0/0 and ping 192.168.1.x output.

a sample would be:

ROUTER A:

interface serial0/0/0   <<< CONNECT SERIAL CROSS CABLE LABELED "DCE"

ip address 192.168.1.1 255.255.255.252

clock rate 64000

no shutdown

ROUTER B:

interface serial0/0/0   <<< CONNECT SERIAL CROSS CABLE LABELED "DTE"

ip address 192.168.1.2 255.255.255.252

no shutdown

[mfurnival]

Why are your serial interfaces "shutdown". I don't see any command relating to encapsulation on the interface either.

Also, only one side of the connection requires a "clock rate" command - this should be on the DCE side of the connection.

[me_noori]

can you prepare show interface serial in both routers special  show me the status of DCD DTR DSR RTS DSR in the end line of show interface serial