I guess I will buck the trend and not blame the telco as my first reaction :-) here are a couple of thoughts. Since you admit that the problem is intermittent, the times of occurence may be a key area of focus. I noticed that you appear to have 4 PVCs, going to what I assume are 4 separate sites. If I can infer a few configs from your two examples below, It *appears* that router A is your hub and routers B, __, ____, and ___ are your four spokes. If I can also infer that your bandwidth statement is actually the CIR for each of these sites, then you have not oversubscribed your network. Four 64kbps links feed into one 256kbps link, which is a good design. There is still the issue of the carrier oversubscribing his network, but that is not something you can control. Finally, I noticed that there is nothing to rate limit traffic flow from your hub down to any of your spokes. Specifically, what have you done to tell the router to not shove 256kbps worth of data down a 64kbps pipe? That is a good use for traffic shaping. You may want to take a peek at the information here(watch wrap): http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/ 121cgcr/wan_c/wcdfrely.htm#xtocid1553127 Finally, what sort of indication to you get on DLCI 271 when you do a show frame PVC? Are you getting a lot of BECNs and in DE packets? How about the Show interface S1 on router B, just prior to going inactive; does it indicate a heavily loaded link? HTH, Paul Werner > I have a intermittent problem (about a dozen times a day) where a PVC > goes > from the active to inactive state. It used to happen maybe once a week. > I > have not changed anything on either router. Furthermore, my other PVC's > are > unaffected. > > I did a debug of the lmi packets and the output is below. My telco says > there is nothing wrong with the physical connection or the configuration > of > the PVC. If anyone has an explanation for these events, or even better, > a > solution to fix the damn thing, I'd love to hear it. > > Thanks, > > Dion > > Serial0(in): Status, myseq 89 > RT IE 1, length 1, type 0 > KA IE 3, length 2, yourseq 193, myseq 89 > PVC IE 0x7 , length 0x3 , dlci 235, status 0x2 > PVC IE 0x7 , length 0x3 , dlci 250, status 0x2 > PVC IE 0x7 , length 0x3 , dlci 271, status 0x0 > *Jan 3 10:23:37: %FR-5-DLCICHANGE: Interface Serial0 - DLCI 271 state > changed to INACTIVE > *Jan 3 10:23:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface > Serial0.1, > changed state to down > PVC IE 0x7 , length 0x3 , dlci 750, status 0x2 > Serial0(out): StEnq, myseq 90, yourseen 193, DTE up > datagramstart = 0x401D66CC, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5A C1 > > Serial0(in): Status, myseq 90 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 194, myseq 90 > Serial0(out): StEnq, myseq 91, yourseen 194, DTE up > datagramstart = 0x40001338, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5B C2 > > Serial0(in): Status, myseq 91 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 195, myseq 91 > Serial0(out): StEnq, myseq 91, yourseen 194, DTE up > datagramstart = 0x40001338, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5B C2 > > Serial0(in): Status, myseq 91 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 195, myseq 91 > Serial0(out): StEnq, myseq 92, yourseen 195, DTE up > datagramstart = 0x402295A0, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5C C3 > > Serial0(in): Status, myseq 92 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 196, myseq 92 > Serial0(out): StEnq, myseq 93, yourseen 196, DTE up > datagramstart = 0x40000FB4, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5D C4 > > Serial0(in): Status, myseq 93 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 197, myseq 93 > Serial0(out): StEnq, myseq 94, yourseen 197, DTE up > datagramstart = 0x401D5E9C, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 5E C5 > > Serial0(in): Status, myseq 94 > RT IE 1, length 1, type 1 > KA IE 3, length 2, yourseq 198, myseq 94 > Serial0(out): StEnq, myseq 95, yourseen 198, DTE up > datagramstart = 0x400003FC, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 00 03 02 5F C6 > > Serial0(in): Status, myseq 95 > RT IE 1, length 1, type 0 > KA IE 3, length 2, yourseq 199, myseq 95 > PVC IE 0x7 , length 0x3 , dlci 235, status 0x2 > PVC IE 0x7 , length 0x3 , dlci 250, status 0x2 > PVC IE 0x7 , length 0x3 , dlci 271, status 0x2 > *Jan 3 10:24:37: %FR-5-DLCICHANGE: Interface Serial0 - DLCI 271 state > changed to ACTIVE > *Jan 3 10:24:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface > Serial0.1, > changed state to up > PVC IE 0x7 , length 0x3 , dlci 750, status 0x2 > Serial0(out): StEnq, myseq 96, yourseen 199, DTE up > datagramstart = 0x400003FC, datagramsize = 14 > FR encap = 0x00010308 > 00 75 95 01 01 01 03 02 60 C7 > > > Configs: > Router A: > > interface Serial0 > no ip address > encapsulation frame-relay > bandwidth 256 > frame-relay lmi-type ansi > ! > interface Serial0.1 point-to-point > ip address 172.19.148.254 255.255.255.0 > frame-relay interface-dlci 271 > > > Router B: > > interface Serial1 > no ip address > encapsulation frame-relay > bandwidth 64 > no fair-queue > frame-relay lmi-type ansi > ! > interface Serial1.1 point-to-point > ip address 172.19.148.253 255.255.255.0 > frame-relay interface-dlci 240 ________________________________________________ Get your own "800" number Voicemail, fax, email, and a lot more http://www.ureach.com/reg/tag _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
