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Debugging ISDN

453

00:19:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:2, changed state to up

00:19:36: ISDN BR0: TX -> RRp sapi = 0 tei = 93 nr = 0

00:19:154618822656: ISDN BR0: RX <- RRf sapi = 0 tei =
93 nr = 0

debug ppp negotiation

When the router is configured for point-to-point protocol, the debug ppp
negotiation

command provides real-time information about the establish-

ment of a session. This is useful if connections are possible with the HDLC
protocol and failures with the PPP protocol. There is a great deal of infor-
mation provided by the following command. However, it can be used to ver-
ify the PPP negotiation described earlier in the chapter. You should use this
output to verify the troubleshooting targets in PPP negotiation.

Bottom#debug ppp negotiation

PPP protocol negotiation debugging is on

Bottom#ping 10.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2
seconds:

00:22:28: %LINK-3-UPDOWN: Interface BRI0:1, changed state
to up

00:22:28: BR0:1 PPP: Treating connection as a callout

00:22:28: BR0:1 PPP: Phase is ESTABLISHING, Active Open

00:22:28: BR0:1 LCP: O CONFREQ [Closed] id 3 len 10

00:22:28: BR0:1 LCP: MagicNumber 0x50239604
(0x050650239604)

00:22:28: BR0:1 LCP: I CONFREQ [REQsent] id 13 len 10

00:22:28: BR0:1 LCP: MagicNumber 0x5023961F
(0x05065023961F)

00:22:28: BR0:1 LCP: O CONFACK [REQsent] id 13 len 10

00:22:28: BR0:1 LCP: MagicNumber 0x5.023961F
(0x05065023961F)

00:22:28: BR0:1 LCP: I CONFACK [ACKsent] id 3 len 10

00:22:28: BR0:1 LCP: MagicNumber 0x50239604
(0x050650239604)

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