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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter 5 Configuring the MGX 8230 Shelf
MGX 8230 MGX to BPX Feeder
min_vpi is the minimum VPI Value—a number in the range 0–4095.
max_vpi is the maximum VPI Value—a number in the range 0–4095.
min_vci is the minimum VCI Value—a number in the range 0–65535.
max_vci is the maximum VCI Value—a number in the range 0–65535.
max_chans is the maximum GLCNS—a number in the range 0–32767.
Step 8 Execute cnfifastrk to configure the port as a trunk. To change the port usage after you execute
cnfifastrk, first execute the uncnfifastrk command.
cnfifastrk <slot.port> <trunk>
• slot.port is the slot and port number of the line you want to serve as the trunk. Note that, whether
the active MGX 8230 PXM is in slot 1 or 2, always specify slot 1 in CLI syntax because this
parameter is a logical value.
• trunk is the MGX 8230 application and can be either “fdr” for a feeder or “rtrk” for a stand-alone
node. Specify “fdr.”
Step 9 Log in to the MGX at the other end of the feeder trunk and use the addshelf command to add the
MGX 8230 as a feeder.
Establishing the BPX 8600-to-BPX 8600 Series Segment
For a three-segment connection, establish a BPX 8600-to-BPX 8600 series (middle) segment. Execute
addcon at one of the BPX 8600 series nodes, as follows.
• For slot and port number, specify slot and port of the BXM connected to MGX 8230 node.
• For VPI and VCI, specify the VPI and VCI at the endpoint on the PXM1.
• For Nodename, use the name of the BPX 8600 series switch at the far end of the connection.
• For Remote Channel, specify the slot and port number of the BXM port attached to the MGX 8230
node at the far end. Specify the VPI as the slot number of the remote MGX 8230 FRSM connected
to the BPX 8600 series switch, and specify VCI as the LCN of the Frame Relay connection at the
remote MGX 8230 node.
• Specify the type of connection. Enter ATFST if the ForeSight feature is operating and ATFR if this
feature is not operating.
Specify the other addcon bandwidth parameters such as MCR, PCR, %Util, and so on.
• Minimum Cell Rate (MCR) is only used with the ForeSight feature (ATFST connections).
• MCR and Peak Cell Rated (PCR) should be specified according to the following formulae.
• MCR = CIR *3/800 cells per second.
• PCR = AR * 3/800 cells per second but less than or equal to 6000.
AR = Frame Relay port speed in bps. For example,
For example: AR equals 64K, PCR = 237, or
AR speed equals 256K, PCR = 950, or
AR speed equals 1536K, PCR = 5703