whoa, now, hold on there! IMA is an open standard. IMA equipment is manufactured by Adtran, Kentrox ( or whomever they are these days ) Nortel, Newbridge, and yes Cisco. Just to name a few that come to mind.
Out here in Pacific Bell land a couple of years ago there were severe ATM IMA issues which eventually were traced to bugs in the Newbridge switch software that was in most of the telco CO's. I believe there are still a few known issues with IMA, centering around how lines are terminated on both side of the circuit, not just the CPE side. Sometimes it takes a bit more time on the horn with the switch tech to work through these issues. But for the most part, over the last year or so, I have sold a number of Cisco ATM IMA solutions, and they have performed flawlessly. I have not experienced the issues you mention. Which leads me to believe that maybe you had configuration issues, or maybe your telco had configuration issues. Or both. In my experience, you are quite likely to run into switch techs who don't understand IMA, and therefore are not adept at configuring their side correctly nor in working with customers to resolve issues. My 3 cents or so. Chuck ""Henry D."" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > This is going to be of no help to you but when we used these > cards to bundle multiple T1's we had nothing good > to say about the way it worked. There were multiple issues, i.e > looping one T1 would cause the whole bundle to go down. Clearing > groups like removing one T1 from the bundle was causing problems > as well. After a while we simply trashed the whole thing and went with > the actual telco solution from a vendor specializing in this type of setup. > I was hoping the issue was the premature realease of the code supporting the > feature > but hearing it now from you just proves that Cisco doesn't really cut it > when it comes > to the telco equipment or equivalent :( > > wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Hello all, I'm having a problem with my IMA interface on a 7206 running > > 12.2(5) (c7200-ds-mz.122-5.bin). When I switched from UBR to VBR-NRT the > > pvc I was working on disappeared from the running config and no data will > > pass through that circuit. I tried to add the pvc back into the config > but > > all I get is this in the log: > > > > %ATM-3-FAILCREATEVC: ATM failed to create VC(VCD=39, VPI=1, VCI=140) on > > Interface ATM4/ima0, (Cause of the failure: vpi/vci pair already in use) > > > > I tried removing the interface and adding it back in with the same > results. > > I've done a 'clear interface' on many frame relay links before with no ill > > effects but I'm hesistant to do the same thing here since, at times, the > IMA > > interface is another beast altogether from your standard interface. The > > only other option I'm aware of is to reboot the router which is very > > difficult because it's right at the core. > > > > Has anyone tried the 'clear interface atm4/ima0' command without causing > > problems or is there another way to clear the vpi/vci config from memory > so > > it will accept the pvc correctly again without rebooting? > > > > Thanks!! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=47894&t=47849 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
