We have a bad frame issue on an pri E1 the debug isdn q921 result is as follows:
*Dec 16 14:29:36.203: ISDN Se0/3/0:15 Q921: L2_EstablishDataLink: sending SABME
*Dec 16 14:29:36.203: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Dec 16 14:29:36.227: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
*Dec 16 14:29:37.203: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
ROUTER(config-voiceport)#
*Dec 16 14:29:37.227: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
*Dec 16 14:29:38.203: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
ROUTER(config-voiceport)#
*Dec 16 14:29:38.227: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
*Dec 16 14:29:39.203: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
ROUTER(config-voiceport)#
*Dec 16 14:29:39.227: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
ISDN status:
OLD-VPN-ROUTER-UNUSED#show isdn status
Global ISDN Switchtype = primary-net5
ISDN Serial0/3/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = AWAITING_ESTABLISHMENT
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0xFFFF7FFF
Number of L2 Discards = 0, L2 Session ID = 195
Total Allocated ISDN CCBs = 0
It was working this happened all of a sudden.
