
Using ISDN and DDR to Enhance Remote Access Connectivity • Chapter 5 191
Figure 5.26 The debug isdn q921 command.
Router1#debug isdn q921
ISDN Q921 packets debugging is on
02:47:01: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
02:47:01: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
02:47:02: %LINK-3-UPDOWN: Interface BRI0, changed state to up
02:47:02: ISDN BR0: TX -> SABMEp sapi = 0 tei = 79
02:47:02: ISDN BR0: RX <- IDREM ri = 0 ai = 127
02:47:02: ISDN BR0: RX <- IDCKRQ ri = 0 ai = 79
02:47:02: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0, TEI 80
changed to down
02:47:02: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0, TEI 79
changed ...