Specifications

6-2 Cisco MGX 8220 Reference, Release 4.1
The 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. Use 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-Bound Access
The MGX 8220 options for out-of-bound access are:
• An alpha-numeric terminal using RS-232 on the ASC maintenance port.
• A computer using SLIP over RS-232 on the ASC control port.
• An Ethernet workstation over Ethernet on the ASC Ethernet port.
Refer to Chapter 3, “Managing the MGX 8220 Shelf”.
The 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. Use 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. Use the cnfbnmif command and specify the “interface format”
parameter as 2 (for UNI).
If the BNM-T3 card is being used, the ATM line must be configured with PLCP.
NoteThe BNM interface cannot be configured while connections exist on the MGX 8220 shelf.
The clrallcnf command can be used to clear the entire configuration. This command will also reset
the MGX 8220 shelf and terminate all telnet sessions.
The interface format can be confirmed with the dspbnmif command and the response of
“bnmLineInterfaceFormat: bnmUni”