After a call I get
*Jun 1 11:15:46.849: ISDN BR0/0/0 Q921: User RX <- DISCp sapi=0 tei=80
*Jun 1 11:15:46.849: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0/0, TEI 80 changed to down
*Jun 1 11:15:46.849: ISDN BR0/0/0 Q921: User TX -> UAf sapi=0 tei=80
*Jun 1 11:15:46.849: ISDN BR0/0/0 Q931: Ux_DLRelInd: DL_REL_IND received from L2
in the debug ISDN Q921, which appears to be why it then drops to TEI_ASSIGNED, ut the interface does not automatically recover to MFE.
The exchange we are having this fun with is is an AXE10 "System Y" exchange (Ericsson)
Is there anything we can do to automate recovery, or could there be a bug? I note CSCsb10564 but it is lacking in detail. Hardware is 1841 and IOS is 12.4(1c) (C1841-BROADBAND-M)
isdn switch-type basic-net3
interface BRI0/0/0
description *** Link To BT ISDN ***
no ip address
encapsulation ppp
dialer pool-member 1
no snmp trap link-status
isdn switch-type basic-net3
ppp authentication chap
ppp multilink
!
interface Dialer1
description *** ISDN Link ***
ip address 172.19.22.142 255.255.255.252
encapsulation ppp
dialer pool 1
dialer remote-name changed
dialer string number
dialer load-threshold 45 either
dialer-group 1
ppp authentication chap
ppp multilink
dialer-list 1 protocol ip permit
Thanks,
Paul.
