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Cisco MGX 8850 Multiservice Switch Installation and Configuration
Release 1.1.31, Part Number 78-11223-03 Rev. B0, May 2005
Appendix A System Specifications
MGX-FRSM-8T1 Specifications
Table A-27 Frame Relay Service with T1 Lines
Category Description
Synchronization Transmitter may be either loop-timed to Receiver or
synchronized to shelf (called normal mode)
Input Jitter Tolerance Per ATT TR 62411
Output Jitter Generation Per ATT TR 62411 using normal mode synchronization
Physical Layer Alarms LOS, OOF, AIS, RAI
Number of Frame Relay Ports One-a single Frame Relay stream occupying N consecutive
time slots
Frame Relay Interface Rates
• 56 Kbps. or
• N x 64 Kbps (where N is the number of consecutive time
slots)
Frame Relay Interface Per ANSI T1.618, 2-octet header
Frame Relay Performance
Counters (per Port; n x DS0)
Received frames discarded due to Aborts
Received frames discarded due to illegal header (EA bit)(s)
Received frames discarded due to CRC errors(s)
Received frames discarded due to alignment errors(s)
Received frames discarded due to unknown DLCI(s)
Received frames discarded due to illegal frame length(s)
Received frames discarded due to DE threshold exceeded
Received frames with DE already set
Received frames with FECN already set
Received frames with BECN already set
Received frames tagged FECN
Received frames(s)
Received bytes(s)
Transmit frames discarded due to underrun
Transmit frames discarded due to Abort
Transmit frames discarded due to egress Q-depth exceeded(s)
Transmit bytes discarded due to egress Q-depth exceeded(s)
Transmit frames discarded due to egress DE threshold
exceeded Transmit frames(s)
Transmit bytes(s)
Transmit Frames with FECN set(s)
Transmit Frames with BECN set(s)
LMI receive status inquiry request count(s)
LMI transmit status inquiry request count
LMI invalid receive status count(s)
LMI signaling protocol (keep alive time-out count)(s)
LMI sequence number error count(s)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm(s)
Transmit bytes during LMI alarm(s)
LMI update status transmit count (in response
to configuration changes)
Diagnostics (per port): Last unknown DLCI received