Specifications
4-14
Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 4 Verifying Modem Performance
Initiating a Modem Loopback Test Call
*Jan 1 00:34:47.867:csm_connect_pri_vdev:tdm_allocate_bp_ts() call. BP TS allocated
at bp_stream0, bp_Ch5,vdev_common 0x610378B0
*Jan 1 00:34:47.883:ISDN Se0:23:RX <- ALERTING pd = 8 callref = 0x8004
*Jan 1 00:34:47.883: Progress Ind i = 0x8288 - In-band info or appropriate
now available
*Jan 1 00:34:48.019:Mica Modem(1/2):State Transition to Call Setup
*Jan 1 00:34:48.019:Mica Modem(1/2):Went offhook
*Jan 1 00:34:48.019:CSM_PROC_IC2_RING:CSM_EVENT_MODEM_OFFHOOK at slot 1, port 2
*Jan 1 00:34:48.019:ISDN Se0:23:TX -> CONNECT pd = 8 callref = 0x8053
*Jan 1 00:34:48.047:ISDN Se0:23:RX <- CONNECT_ACK pd = 8 callref = 0x0053
*Jan 1 00:34:48.047:EVENT_FROM_ISDN::dchan_idb=0x6149A144, call_id=0x1A, ces=0x1
bchan=0x0, event=0x4, cause=0x0
*Jan 1 00:34:48.047:EVENT_FROM_ISDN:(001A):DEV_CONNECTED at slot 1 and port 2
*Jan 1 00:34:48.047:CSM_PROC_IC4_WAIT_FOR_CARRIER:CSM_EVENT_ISDN_CONNECTED at slot
1, port 2
*Jan 1 00:34:48.047:Mica Modem(1/2):Link Initiate
*Jan 1 00:34:48.047:ISDN Se0:23:RX <- CONNECT pd = 8 callref = 0x8004
*Jan 1 00:34:48.047:EVENT_FROM_ISDN::dchan_idb=0x6149A144, call_id=0x8005, ces=0x1
bchan=0x16, event=0x4, cause=0x0
*Jan 1 00:34:48.047:EVENT_FROM_ISDN:(8005):DEV_CONNECTED at slot 1 and port 0
*Jan 1 00:34:48.047:CSM_PROC_OC5_WAIT_FOR_CARRIER:CSM_EVENT_ISDN_CONNECTED at slot
1, port 0
*Jan 1 00:34:48.051:ISDN Se0:23:TX -> CONNECT_ACK pd = 8 callref = 0x0004
MICA modem 1/2 goes offhook and receives the call. The
debug modem csm
command shows the call
getting switched over to a modem.
*Jan 1 00:34:49.159:Mica Modem(1/2):State Transition to Connect
*Jan 1 00:34:53.903:Mica Modem(1/2):State Transition to Link
*Jan 1 00:35:02.851:Mica Modem(1/2):State Transition to Trainup
*Jan 1 00:35:04.531:Mica Modem(1/2):State Transition to EC Negotiating
*Jan 1 00:35:04.711:Mica Modem(1/2):State Transition to Steady State
*Jan 1 00:35:04.755:TTY3:DSR came up
*Jan 1 00:35:04.755:tty3:Modem:IDLE->(unknown)
Inspect the different modem trainup phases. The modem goes from Connect to Steady State in
15 seconds. The
debug modem csm
command displays the trainup phases. The
debug modem
command displays the logical RS-232 transition message “DSR came up.”
*Jan 1 00:35:04.759:TTY3:EXEC creation
*Jan 1 00:35:04.759:TTY3:set timer type 10, 30 seconds
*Jan 1 00:35:08.915:TTY3:Autoselect(2) sample 61 <------------------- a
*Jan 1 00:35:09.187:TTY3:Autoselect(2) sample 6164 <----------------- d
*Jan 1 00:35:09.459:TTY3:Autoselect(2) sample 61646D <--------------- m
*Jan 1 00:35:09.459:TTY3:Autoselect(2) sample 61646D69 <------------- i
*Jan 1 00:35:09.715:TTY3:Autoselect(2) sample 646D696E <------------- n
*Jan 1 00:35:09.715:TTY3:Autoselect(2) sample 6D696E0D <------------- <cr>
Decode the incoming character-byte stream for an EXEC shell login (no PPP). In this example, match
the username “admin” to the character stream: 616D696E0D = admin carriage return.
The Cisco IOS samples four packets at a time. It searches for a header that matches one of your
autoselect styles. The
debug modem
command generates the autoselect debug output.
*Jan 1 00:35:09.715:TTY3:set timer type 10, 30 seconds
*Jan 1 00:35:11.331:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:11.667:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:11.987:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:11.987:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:11.987:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:12.339:TTY3:Autoselect(2) sample [suppressed--line is not echoing]
*Jan 1 00:35:12.391:TTY3:create timer type 1, 600 seconds
5300-NAS>