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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
LMI Interface
In-band Access
To create an in-band access to the MGX 8220 shelf
1. Use an out-of-band method to configure the MGX 8220 IP address to 37. Enter the cnfifip
command.
2. Configure the IP address on the connected router or ATM switch
3. The MGX 8220 shelf uses a VPI of 3 and VCI of 8 for in-band access. The connected router or
ATM switch must be able to support these values. Configure the router or switch for these VPI/VCI
values.
4. From the ATM network, telnet into the MGX 8220 address. The login prompt should appear.
Out-of-Band Access
The MGX 8220 options for out-of-band access are
• Alphanumeric terminal using RS-232 on the ASC maintenance port.
• Computer using SLIP over RS-232 on the ASC control port.
• Ethernet workstation over Ethernet on the ASC Ethernet port.
See Chapter 3, “Managing the Cisco MGX 8220 Shelf.”
LMI Interface
In stand-alone applications, the Annex-G ATM LMI must be disabled in order to suppress ATM LMI
related connection alarms. This is achieved by looping back Annex-G LMI messages within the
MGX 8220 shelf. Enter the addlmiloop command.
The loopback can be confirmed with the dsplmiloop command and the response of
“AtmLmiLoopBack: Loop.”
Configuring the BNM
In stand-alone applications, the BNM card interface format must be configured to UNI before
connections can be provisioned. You need to enter the cnfbnmif command to specify the “interface
format” parameter as 2 (for UNI).
The BNM interface format is preserved in the BRAM (battery-backed RAM) of the ASC card(s) and
need not be reconfigured. The clrallcnf command will not modify the BNM interface format.
Display the current BNM interface format by entering the following command:
shelf.1.3.ASC.a > dspbnmif
The current BNM interface format (in this case, STI) is displayed.
bnmLineInterfaceFormat: bnmSti