Frsms For Serial Connections - Cisco MGX 8230 Installation And Configuration Manual

Frame Relay Service Modules

FRSMs for Serial Connections

The FRSMs that support serial connections include the following:
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FRSM-HS1/B X.21 and V.35 Interfaces
Features specific to the FRSM-HS1/B with X.21 and V.35 interfaces are:
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FRSM-HS2 HSSI Interfaces
Features specific to the FRSM-HS2 with HSSI interfaces are:
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Card Combinations
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Illustrations
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Cisco MGX 8230 Edge Concentrator Installation and Configuration
2-38
MGX-FRSM-HS2: provides unchannelized Frame Relay service over two HSSI lines on the
SCSI2-2HSSI back card. Each port can operate in either DTE or DCE mode.
MGX-FRSM-HS1/B: supports four V.35 or four X.21 ports. Each port can operate in DTE or DCE
mode. The mode depends on the type of attached cable. See
to determine the correct cabling for the intended mode of each port.
Four X.21 or four V.35 lines
DCE/DTE selection on a per-port basis
As DCE, clock speeds of 48 Kbps, 56 Kbps, n x 64 Kbps up to 2 Mbps, n x 1.5 Mbps and n x 2 Mbps,
up to 8 Mbps, are supported
As DTE, obtains clock from line, up to 8 Mbps
The total maximum throughput of all lines on a card is 16Mbps
Supports 200 DLCIs per card
Support for per-VC queueing on ingress with closed-loop traffic management
Support for two priority levels of egress port queues for data traffic
Various DCE/DTE loopbacks
Two HSSI lines
DCE/DTE selection on a per-port basis
As DCE, clock speeds of n x 1.5 Mbps and n x 2 Mbps, up to 52 Mbps, are supported
As DTE, obtains clock from line, up to 52 Mbps
Supports 2000 DLCIs per card
Support for per-VC queueing on ingress with closed-loop traffic management
Support for five classes of service (high-priority, rt-VBR, nrt-VBR, ABR, UBR) for data traffic
Various DCE/DTE loopbacks
1:1 redundancy with Y-cabling for FRSM-HS2 cards
MGX-FRSM-HS2 with a SCSI2-2HSSI back card
MGX-FRSM-HS1/B with a MGX-12IN1-S4 back card
For the MGX-FRSM-HS2 front card, see
Chapter 2
MGX-FRSM-HS1/B Cabling, page 2-39
Figure 2-20 on page 2-41.
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Module and Service Descriptions