Cisco IGX 8 Specification Sheet page 9

Frame Relay Interface
Type of Service:
Data Interface:
Data Transfer Protocol:
Input Data Format:
Input Data Frame Length:
Frame Integrity Check:
Input Data Rate:
No. of Ports per Card:
No. of PVCs per Port:
Port Electrical Interface:
Data Clocking:
Virtual Circuit Identifier:
Control Protocol:
Bundled Connections:
Billing Time Accuracy:
Permanent Virtual Circuit (PVC).
Per ITU-T I.122 and ANSI T1/S1 Standards.
LAP-D frame level core functions.
High Level Data Link (HDLC) protocol.
Up to 4096 bytes max.
Frame Check Sequence and CRC check of data frame. If CRC fails,
data frame is discarded at receiving node.
56 Kbps to 2.048 Mbps. (Max. rate available only with one of four
ports/card active).
4
252 per FR card, distributed in any combination.
ITU-T V.35. IGX 8 can act as a DCE or DTE for direction of control
leads and timing.
Normal or looped.
Data Link Connection Identifier (DLCI).
Local Management Interface with XON/XOFF type flow control.
IGX sets FECN and BECN bits in frame relay frame.
252 virtual circuits per card
1024 virtual circuits per node.
Upon request from user device, IGX will provide GMT from any
node accurate to within 1 second.
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