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ManualsBrandsCisco ManualsComputer equipment1604 - 1604 Bridge/router
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Step 10—Testing Async PPP Connections
Dial Solutions Quick Configuration Guide
2-32
Step 2 From a terminal emulation program running on the test PC, enter atdt followed by the
telephone number assigned to the Cisco AS5300. In this case test, 5551234 is used.
atdt5551234
CONNECT 24000/REL - MNP
User Access Verification
Username: joe-admin
Password: joe-password
hq-sanjose>
Step 3 Interpret the debug messages that appear on the administrator’s terminal screen as a result
of Step 2. As the modem call comes into the access server, debug output is created.
Note When examining PPP between two remote peers, first check to see if both sides
get through LCP negotiation. If they do, move on to check authentication.
After authentication is successful, check IPCP negotiation.
The following comments apply to the debug output example, which spans over the next
few pages. Locate the time stamps in the debug output then interpret the call behavior.
(a) See 21:34:56.958.
A modem call comes into the access server on TTY line 4.
(b) See 21:34:59.722 through 21:34:59.734.
An incoming PPP frame is recognized, so PPP is launched on TTY line 4.
(c) See 21:34:59.790.
The test PC gets assigned an IP address from the address pool set up on the access
server. The address is 10.1.2.2.
(d) See 21:35:01.798.
Interface async 4 comes up. After PPP launches, TTY line 4 becomes async
interface 4.
(e) See 21:35:02.718.
Incoming config request (I CONFREQ). The remote test PC requests a set of
options to be negotiated. The PC asks the Cisco AS5300 to support the callback
option.
(f) See 21:35:02.738.
Outgoing config reject (O CONFREJ). The Cisco AS5300 rejects this option,
because the access server is not configured to support Microsoft Callback in this
case study.
(g) See 21:35:02.850.
Incoming config request (I CONFREQ). The test PC requests a new set of options.
(h) See 21:35:02.862.
Outgoing config acknowledgment (O CONFACK). The Cisco AS5300 accepts the
new set of options.
(i) See 21:35:03.978.
LCP is now open (LCP: State is Open). Both sides have acknowledged
(CONFACK) the other side’s configuration request (CONFREQ).