B-4
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Appendix
Control and Clock Cabling
Note The PXM-UI-S3/B user interface card does not have a maintena nce port.
Procedure to Connect a Modem to the Maintenance Port
Table B -3 lists cable information for main tenance and control ports.
Use the following procedure to properly connect a modem to a maintenance port.
Step1 Connect the suggested cable from the modem to the m aintenance port.
Step2 Configure an IP address for the serial port (s10) and also a second unique address for the destinat ion IP
address.
Step3 Using 9600 baud, connect to the modem. Use a serial line interface protocol (SLIP) client package that
does not enable compression and also supports a configurable EOF character. The MGX switch expects
to see an EOF character of 300 in base 8.
Step4 Try to telnet or ping the destination IP address configured.
•If the correct SLIP client is used, you should see the login prompt when telnetting in.
•If incorrect, you can still verify connectivity is up by checking statistics on dspipif s10 for packets
in.
If the special EOF character is not supported, then after 576 bytes, it is logged as an input error. (You
should be able to connect directly from a PC or via modem as long as the correct SLIP client is used.)
TableB-3 Cable and Connector Information for the Maintenance and Control Ports on the
PXM-UI-S3 and PXM-UI-S3/B User Interface Cards
Cable Parameter Description
Interface EIA/TIA-232—both are DTE ports.
Suggested cable MGX 8950: Uses only 8 conductor
MGX 8850 or MGX 8850/B: 24 AWG, 25-wire. A straight-through
EIA/TIA-232 cable provides a terminal or printer connection. For an interface
with modems on either port, a null modem cable might be necessary.
MGX 8830 or MGX 8830/B: 24 AWG, 8-wire. A straight-through
EIA/TIA-232 cable provides a terminal or printer connection. For an interface
with modems on either port, a null modem cable might be necessary.
Cable connector MGX 8850 and MGX 8950: RJ-48, su bminiature, male.
MGX 8830: RJ-45, subminiature, male.
Maximum cable length 50 feet (15.24 m).