Im currently employing a 1720 cisco router for our frame relay router and we currently have 25 (sub-interface) frame relay links connected.
Recently we have noticed that some of our sites goes down and upon checking the links we found out that the PVC's has been deleted. We log a problem with our Telco and they said that their link is OK.
Can somebody tell me how many sub-interface we can create on a single serial interface
I did a debug at one of the site which went down and below is the result. Also shown here is the version of the router Im currently employing at my HQ
ay_Office#debug frame-relay lmi interface serial0
Frame Relay LMI debugging is on
Displaying lmi data from interface Serial0 only
Pay_Office#
00:03:10: Serial0(out): StEnq, myseq 7, yourseen 28, DTE up
00:03:10: datagramstart = 0x261CE78, datagramsize = 14
00:03:10: FR encap = 0x00010308
00:03:10: 00 75 95 01 01 01 03 02 07 1C
00:03:10:
00:03:10: Serial0(in): Status, myseq 7
00:03:10: RT IE 1, length 1, type 1
00:03:10: KA IE 3, length 2, yourseq 29, myseq 7
00:03:20: Serial0(out): StEnq, myseq 8, yourseen 29, DTE up
00:03:20: datagramstart = 0x261CE78, datagramsize = 14
00:03:20: FR encap = 0x00010308
00:03:20: 00 75 95 01 01 00 03 02 08 1D
00:03:20:
00:03:20: Serial0(in): Status, myseq 8
00:03:20: RT IE 1, length 1, type 0
00:03:20: KA IE 3, length 2, yourseq 30, myseq 8
ay_Office#sho frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
DLCI = 22, DLCI USAGE = LOCAL, PVC STATUS = DELETED, INTERFACE = Serial0.1
input pkts 0 output pkts 1 in bytes 0
out bytes 294 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 1 out bcast bytes 294
pvc create time 00:03:34, last time pvc status changed 00:01:29
ITC_FR_Host#sho ver
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.1(4), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Wed 30-Aug-00 08:36 by cmong
Image text-base: 0x80008088, data-base: 0x805D8590
ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)
ITC_FR_Host uptime is 14 weeks, 6 days, 18 hours, 12 minutes
System returned to ROM by power-on
System image file is "flash:c1700-y-mz.121-4.bin"
cisco 1720 (MPC860) processor (revision 0x501) with 12288K/4096K bytes of memor.
Processor board ID JAD04340N48 (3727872350), with hardware revision 0000
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
1 Serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
4096K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
