Network Router User Manual
Table Of Contents
- Rules for Adding a DAX Connection
- Rules for Adding Three-Segment Connections
- Rules for Adding Management Connections
- BPX 8600-to-BPX 8600 Segment
- Very High Speed Frame Service Modules
- Eight-Port Channelized and Unchannelized Frame Service Module
- Four-Port Unchannelized Frame Service Module for V.35
- MGX-FRSM-2CT3 Features
- MGX-FRSM-2T3E3 Features
- MGX-FRSM-HS2/B Features
- MGX-FRSM-HS1/B Features
- Eight-Port FRSM Features
- Congestion Indication for NIW Connections
- PVC Status Management
- Cell Loss Priority
- Congestion Indication
- Command and Response Mapping
- Translation and Transparent Modes
- Loss Priority Indication
- Congestion Indication
- Cell Delay Treatment
- Error and Alarm Response
- Configuring the Card, Lines, and Ports
- Adding and Modifying Connections
- Configuring the Card, Lines, and Ports
- Configuring Bulk Distribution and Redundancy
- Adding and Modifying Connections
- Configuring Redundancy Through the Redundancy Bus
- Configuring Redundancy Through the Distribution Bus
- Pattern Test Options
- Loopback Test Options
Configuring Frame Relay Service
Cisco MGX 8850 Installation and Configuration, Release 1.1.00, Part Number 78-6186-02
6-34
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 8850 node.
• For VPI and VCI, specify the VPI and VCI at the endpoint on the PXM.
• 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 8850 node at the far end. Specify the VPI as the slot number of the remote MGX 8850
FRSM connected to the BPX 8600-series switch, and specify VCI as the LCN of the Frame Relay
connection at the remote MGX 8850 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,
The preceding MCR and PCR formulae are predicated on a relatively small frame size of 100 octets,
and even smaller frame sizes can result in worse-case scenarios. For example:
% Util should be set to the same value as that used for the Frame Relay segments of the connection.
Test Commands for the FRSMs
Use the display commands (dsp...) for checking the state of cards, lines, ports, queues, and
connections. The following commands are available for testing the FRSMs (see the Cisco MGX 8850
Wide Area Edge Switch Command Reference for descriptions):
• addlnloop, cnflnloop, and dellnloop are line-level, diagnostic commands that require the service
level user privilege.
CLP to DE is a number in the range 1–4 that specifies the CLP to DE mapping.
1=map CLP to DE
2=set DE to 0
3=set DE to 1
4=ignore CLP (NIW only)
For example: AR equals 64K, PCR=237, or
AR speed equals 256K, PCR=950, or
AR speed equals 1536K, PCR=5703
For a frame size of 64 octects the PCR formula becomes: PCR=AR * 2/512 cells per sec
For a frame size of 43 octects the PCR formula becomes: PCR=AR * 2/344 cells per sec