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Tips
If you are having trouble, you can troubleshoot the AppleTalk protocol by using its debug commands
to view information for the errors, events, and packets and check the Gateway name, NAS name, and
if the virtual access interface is up.
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Enter the debug ppp negotiation command:
5300# debug ppp negot
PPP protocol negotiation debugging is on
5300#
%LINK-3-UPDOWN: Interface Async1, changed state to up
PPP Async1: treating connection as a dedicated line
ppp: sending CONFREQ, type = 2 (CI_ASYNCMAP), value = 0xA0000
ppp: sending CONFREQ, type = 3 (CI_AUTHTYPE), value = 0xC223/5
ppp: sending CONFREQ, type = 5 (CI_MAGICNUMBER), value = 0xAB1BAB3
PPP Async1: state = REQsent fsm_rconfack(0xC021): rcvd id 7
ppp: config ACK received, type = 2 (CI_ASYNCMAP), value = 0xA0000
ppp: config ACK received, type = 3 (CI_AUTHTYPE), value = 0xC223
ppp: config ACK received, type = 5 (CI_MAGICNUMBER), value = 0xAB1BAB3
ppp: config ACK received, type = 7 (CI_PCOMPRESSION)
ppp: config ACK received, type = 8 (CI_ACCOMPRESSION)
PPP Async1: received config for type = 1 (MRU) value = 1500 acked
PPP Async1: received config for type = 2 (ASYNCMAP) value = 0x0 acked
PPP Async1: received config for type = 5 (MAGICNUMBER) value = 0x565CFA6A acked
PPP Async1: received config for type = 7 (PCOMPRESSION) acked
PPP Async1: received config for type = 8 (ACCOMPRESSION) acked
ipcp: sending CONFREQ, type = 2 (CI_COMPRESSTYPE), slots = 15, csid = 0
ipcp: sending CONFREQ, type = 3 (CI_ADDRESS), Address = 171.60.199.193
Resetting ATCP
atcp: sending CONFREQ, type = 6 (CI_AT_SERVERINFO), values = 119132, 6
atcp: sending CONFREQ, type = 7 (CI_AT_ZONEINFO), values = 1191B3, 9
atcp: sending CONFREQ, type = 8 (CI_AT_DEFAULT_ROUTER), values = 5, C7
.
.
.
•
Enter the show interface async 1 command:
5300# show int async 1
Async1 is up, line protocol is up
Hardware is Async Serial
Interface is unnumbered.
MTU 1500 bytes, BW 38 Kbit, DLY 100000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive not set
DTR is pulsed for 5 seconds on reset
LCP Open
Open: IPCP, ATALKCP
Last input 00:00:01, output 00:00:08, output hang never
Last clearing of "show interface" counters 07:17:22
Input queue: 1/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/64/0 (size/threshold/drops)
Conversations
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
753 packets input, 22232 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
638 packets output, 37821 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Using address of Ethernet0 (171.60.199.193)
0/9 (active/max active)
Verify
Basic Configuration 3-53
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