?
Solved

Need Help With Verizon ATM Host and Remote T1 Cisco Configuration!

Posted on 2006-04-25
7
Medium Priority
?
2,754 Views
Last Modified: 2013-12-14
New Network, ATM Host is Up/Up on Cisco 3825 - Remotes all are T1(atm) lines using Cisco 2801 WIC-T1-CSU/DSU - all out of box new equipment

The host is up - trying to get 1st remote up - All my Telco will give me is that the VPI is 1 the VCI is 33 Host and 32 on Remote side for this remote, all other remotes are VCI 34,35,36 etc with Remote of 32 on Each if that gives a clue - Not using Frame Relay - Constant Bit Rate is used - I am told we are using "ATM-T1 Lines for the remote sites"

Here are the router chunks:
===============================
HOST 3825
===============================
interface ATM1/0
 no ip address
 atm ilmi-keepalive
!
interface ATM1/0.33 point-to-point
 ip address 192.168.100.138 255.255.255.252
 pvc 1/33
  protocol ip 192.168.100.137 broadcast
  encapsulation aal5snap
 !
!
no ip classless
ip route 192.168.11.0 255.255.255.0 ATM1/0.33

===============================
REMOTE 2801
===============================
!
interface FastEthernet0/0
 description Rockville LAN
 ip address 192.168.11.1 255.255.255.0
 duplex auto
 speed auto
!
interface Serial0/2/0 ip address 192.168.100.137 255.255.255.252
 no ip route-cache cef
 no ip route-cache
 no ip mroute-cache
 no fair-queue
 service-module t1 timeslots 1-24 speed 64
 service-module t1 clock source line
 encapsulation hdlc
!
no ip classless
ip route 0.0.0.0 0.0.0.0 192.168.100.138

My ATM Line shows UP/UP and Telco says all is well

The remote Cisco shows AL light Orange and CD light green  
Line Down/Down  
DCD Down  DSR Up DTR Up RTS up  CTS Down
Telco says smart-jack tests A-ok on this connection

No clue whether this is even close - Obviously Running out of time to get this running, I have a Cisco Service Contract also but they have no examples for ATM to T1 ! :)  I will be glad to pay $ for help getting these running.  

Thanks much in advance!
0
Comment
Question by:BarkleyDog
  • 3
  • 2
6 Comments
 
LVL 12

Expert Comment

by:pjtemplin
ID: 16589624
I don't think you'll be able to do ATM on a WIC-1DSU-T1.  You definitely have the encapsulation wrong with HDLC, but I doubt you'd be able to hack up a workable ATM solution on a TDM card.

And please enable ip route-cache (or ip route-cache cef if it'll take that form of the command).  Your router will thank you for it.
0
 

Author Comment

by:BarkleyDog
ID: 16595704
Thanks for the reply, I forgot to post that I solved the problem, and you are correct it could not be done with the equipment I had, I tried using DXI and every other thing only to find out that my telco provided the wrong equipment from the start.  A Cisco 2801 is unable to do ATM connections, for ATM the lower end products are Cisco 2600 series (with appropriate memory expansion), Cisco 2811, 3600 and others.  A 2801 cannot accept the AIM interface.

For future reference for those of you heading into ATM for the first time, I needed to connect ATM over T1 using Cisco equipment.  This requires 2 expansion parts VWIC-1MFT-T1 and AIM-ATM or as a bundle the package is known as AIM-ATM-1T1, a combo of the VWIC Card and AIM-ATM expansion board which is an internal router add-on board.  This applies to the 2620 and 2811 routers I had, and several other models.

Once you have these you will have a Controller T1 interface which you use Mode ATM AIM 0 this will provide an ATM interface on the router upon reboot (and the correct Cisco IOS pack, which varies from router to router).  On the ATM interface you can then use the same commands as on the host DS3! once I had this, the whole thing started to make sense.  For each PVC setup a .252 subnet, have the ip address of one side be the protocol ip address of the remote and vice-versa.  This creates a direct connection between sites.  Make sure encapsalation is the same on both sides, and that your telco has scrambling configured the same on all of their equipment.  At this point its very straight forward.

Here is a snip of the final config on one of the remotes.

!
interface ATM0/1/0
 no ip address
 no scrambling-payload
 no atm ilmi-keepalive
!
interface ATM0/1/0.1 point-to-point
 ip address 192.168.100.101 255.255.255.252
 pvc 1/32
  protocol ip 192.168.100.102 broadcast
  cbr 1536
  encapsulation aal5snap
 !

I still had tons of line errors until I issed the command CBR 1536 on the Host and Remote Interfaces (this tells the int to use maximum constant bit rate bandwidth of 1536 kbs - leaving room for overhead)  Of course this will vary depending on your connection.

Lesson learned, do not rely on your telco to get things right when ordering a network no matter how large.  Our config was 1 host and 9 remotes, over $200K per year for the telco and still my they left it up to me and my sales guy to get it straight.  (Their third party equipment vendor and installation service were the ones who sent the wrong equipment!)  I even had to beg for the settings on the telco side for the line coding, framing, cbr, scrambling etc.  It took over a week to get them to get me this info, and get it right (they had different settings on different switches :)

Thanks for your reply, although I solved the issue, I would be glad to award points if you could tell me what routing protocol you would recommend with a small sample snip.  My config is 9 remotes to 1 host, no internet, all internal private traffic, very very little traffic other than from point to point from the remotes to host and back.  i.e. remote office 3 does not talk to office 4, etc.

I use 192.168.x.x  1.x being the host and 2.x, 3.x etc being the remotes.  My current routes are simply all traffic for the lan side to the ATM subinterface for each remote, and on the remote side, a default route back to the host.

Host
  ip route 192.168.2.x 255.255.255.0 ATM1/0.33
  ip route 192.168.3.x 255.255.255.0 ATM1/0.34
  ip route 192.168.4.x 255.255.255.0 ATM1/0.35
Remote
  ip route 0.0.0.0 0.0.0.0 ATM1/0/1.1

Thanks again, what a relief it is to finally be up and running, definitely more involved than my previous network using frame relay over good old Serial T1.
0
 
LVL 12

Expert Comment

by:pjtemplin
ID: 16595857
Off-topic, but a smart "lesson learned for next time" is to put terms in the contract such that:

L1/2/3 provisioning information must be received by N days before go-live date.  For every day that provisioning information is delayed beyond this deadline, billing start will be delayed beyond circuit acceptance by an equivalent amount (i.e. if they're three days late in supplying info, you get three free days of service).

Services must be ready for acceptance by X.  If services are not ready, customer has the right to cancel any or all services at no penalty, or customer may accept an equivalent period of free service.
0
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 

Author Comment

by:BarkleyDog
ID: 16640883
Issued resolved.  Please Close and Refund Points.
0
 
LVL 12

Expert Comment

by:pjtemplin
ID: 16640911
You should be able to do this yourself.
0
 

Accepted Solution

by:
GranMod earned 0 total points
ID: 16673033
Closed, 500 points refunded.
GranMod
The Experts Exchange
Community Support Moderator of all Ages
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Cable Modem Provisioning from DPoE compliant server  This Article is to support CMTS administrators to provide an overview of DOCSIS compliance configuration file, and to provision a cable modem located at customer place from a Back office serve…
Why do some people recommend buying business VoIP from an ISP? What are the benefits to my company? What are the costs?
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Whether it be Exchange Server Crash Issues, Dirty Shutdown Errors or Failed to mount error, Stellar Phoenix Mailbox Exchange Recovery has always got your back. With the help of its easy to understand user interface and 3 simple steps recovery proced…

755 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question