VWIC-1DSU/CSU-T1

[CiscoRC]

Guys,

Does anyone know how to simulate a VWIC-1DSU/CSU-T1 communications?

I've been working on setting up a T1 connection through a Network Cloud, not just Router A to Router B which I can do with no problems.

Can this be remotely possible to setup your own network for Simulating a T1 communications?

Just thought I ask because we've had a few customers having issues. It works fine doing a loopback test, but sometimes not through a Cloud Network.


PC-----SW-----RtA-----cloud-----RtB----SW-----PC

Below this line can be done easily:

PC---SW---RtA----RtB----SW----PC

I figure the first design has something to do with the clock rate or something...I'm just brain storming some ideas...any further questions needed just ask...


Thanks

***************
R. Corrigan Jr.
Network+, (working on CCENT+CCNA)

 

[plshlpme]

you can just put a crossover cable between rtr a and b?
its an rj48 connector for those wics right?

so you should be able to make a crossover patch cable.
i believe t1 pairs are 12 45, so cross 1 to 4 and 2 to 5.
make sure to make one side the dce with the clockrate command.

 

[jneiberger]

1. Do you have the interface configured to take clock from the network?

2. What is your layer two protocol?

3. When you have it connected to the cloud, does layer one ever come up?

 

[CiscoRC]

plshlpme, thanks for the response. Yes, I made a T1 cabling just like you mentioned that can be done. However, the problem when configuring is where and how do you make a Cloud between 2 networks? As stated above, I can do this:

PC---SW---RtA----RtB----SW----PC

But accomplishing this:

PC-----SW-----RtA-----cloud-----RtB----SW-----PC

This seems a little complicated and yeah, jneiberger, it is clocked properly but I was wondering if you need a DSU/CSU box on the outside of the clouds? The problem is that RtA can't get across the cloud to RtB.

The layer 2 protocol is just defaults we haven't done anything with that, it can still be done without the layer 2, so more on focusing on layer 3.

Layer 1 comes up on both sides, but not go across, like using the icmp to ping....I'm just not familiar with that, that's why I was hoping to get info from anyone that has experience with this.

Thanks a lot guys, hopefully we are able properly set this up....

***************
R. Corrigan Jr.
Network+, (working on CCENT+CCNA)

 

[plshlpme]

ok i misread your original post and thought you were just doing some testing..

these are point to point t1's so there is no "cloud"
it will just be telco equipment.

now if your up/down at both ends and your clocked from the line at both ends with the same encapsulation then there is a telco issue.

can you give yourself a loop from rtr a and check the status of rtr b's serial interface.. and vice versa..

these are full rate t1s and not fractional correct?

 

[jneiberger]

The term "cloud" refers to a carrier network like frame relay, ATM or MPLS. You wouldn't use that term if it's just a point-to-point connection between two sites.

If layer one comes up then you have at least partial connectivity, but you still may have a premise wiring problem. Check your cabling on both sides. Have someone take a look at the NIU on each side and make sure it doesn't indicate any problem. If all that looks good and you still can't pass traffic across the link then your provider probably has the issue.

 

[CiscoRC]

That's correct plshlpme, I misinterpret the word "Cloud" but I did mean it in some way...I might have come across just a tad confused, apologize for that.

I can definitely do a RouterA to RouterB, just testing...was curious if it's possible to make your our cloud but realized that you need to get a T1 line wired to the test. I was also looking at a DSU/CSU box...but these Wics T1 alr4eady have them build in.

Anyway, great support guys,

Thank you..

***************
R. Corrigan Jr.
Network+, (working on CCENT+CCNA)