Specifications

2-14 Cisco MGX 8220 Reference, Release 4.1
MGX 8220 Shelf Controller
Console Ports
There are three ASC hardware console ports located on the faceplate of the back card.
The maintenance port is an RS-232 port used by a direct connect alpha-numeric terminal for
inputting Command Line Interface (CLI) commands. Y-cables
cannot be used on this port. This port
must be used to make initial IP address assignments on the other ports before the other ports can be
used.
The control port and IEEE 802.3 (Ethernet, LAN AUI) ports are used for inputting commands and
file transfers (statistics collection and firmware download). The control port communicates using
SLIP and the Ethernet port communicates using IP. These ports support TFTP, SNMP, and CLI
(through Telnet). The control port may be used with Y-cables for redundancy when a second
ASC card set is present.
Some Ethernet transceivers with integrated DB-15 connectors cannot be connected directly to the
LAN AUI Ethernet port on the MGX 8220 ASC back card because of interference with the
ASC back card extractor levers. To overcome this problem two Ethernet transceiver extenders (one
each for a primary and secondary ASC card) are provided.
If you encounter difficulty in connecting an Ethernet transceiver, install an extender on each
ASC card as follows:
1 With the retaining clip on the LAN AUI port in the unlocked (up) position, connect the Ethernet
transceiver extender to the LAN AUI port on the ASC back card as shown in Figure2-12.
2 Push the port retaining clip into the locked (down) position to secure the connection.
3 With the retaining clip on the transceiver extender in the unlocked (up) position, connect the
Ethernet transceiver to the extender as shown in the diagram.
4 Push the extender retaining clip into the locked (down) position to secure the connection.
Figure2-12 Ethernet Extender
NoteAdditional access for shelf management is available through in-band communication over the
ATM trunk.