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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
Chapter6 Card and Service Configuration Frame Service Module Features
•Hot standby with 1:1 redundancy (see sections for individual FRSM card types).
•Resource partitioni ng a t the card level or port level .
•Bit error rate test (BERT) functi ons for all card types except the HSSI card types. For a desc ription
of BERT on the MGX-FR SM-2T3E3, see the f orthcoming section t itled “Bit Error Rate Testing on
an Unchannelized T3 or E3 FRSM.” Running a BERT session on an MGX-FRSM-2CT3 or an
eight-port FRSM requires a set of MGX-SRM-3T3s in the system. For a description of BERT on
these cards, see the section ti tled “Bit Error Rate Testing Through an MGX-SRM-3T3.”
•User-selectable weighted fair q ue ui ng o r fixed- r a te qu eu in g . T he user can select either fixed-rat e
queuing to provide highest egress port speed while reducing quality of service or weighted fair
queuing to provide max imum quality of servic e but slower egress port sp eed. This feature appl ies to
the FRSM-2CT3, FRSM-2T3E3, and FRSM-HS2 cards.
•Subrate support is provided for the MGX-FRSM-2T3E3 card. This feature applies to the
MGX-FRSM-2T3E3 card only when used with Digital Link equipment.
Note Subrate capability is not sup por te d on Kentr ox e qui pm ent.
•Zero CIR Service for FRSM-VHS and FRSM-8T1 and FRSM-8E1 cards
MGX-FRSM-2CT3 Feature s
The specific features are:
•Up to 4000 user-connections
•Two T3 lines
•Up to 256 logical ports
•Logical port speed from DS0 56 Kbps through DS1 1.536 Mbps
•Support for five Class of Service (CoS) queues (high priority, rt-VBR, nrt-VBR, ABR, UBR)
•Supports Hot Standby w it h less than 1 second sw itc hove r using 1:1 redundan cy th rough Y-cable
redundancy (no Service Resource Module required)
•OAM Continuity Traffic Generation Test for use on defective PVCs
MGX-FRSM-2T3E3 Features
The specific features are:
•Up to 2000 user-connections
•Two T3 or E3 lines coinciding with two logical ports
•ADC Kentrox and Digital Link methods for supporting fractional T3 or E3 ports
•Maximum possible number of DLCIs per port by using the Q.922 two-octet header format
•Support for five Class of Service (CoS) queues (high priority, rt-VBR, nrt-VBR, ABR, UBR)
•Supports Hot Standby w it h less than 1 second sw itc hove r using 1:1 redundan cy th rough Y-cable
redundancy (no Service Resource Module required)
•Fractional T3 speeds available through either the Digital Link or ADC Kentrox method
•Supports running lines at subrates when used with Digital Link equipment