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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Frame Relay Service Modules (FRSMs)
FRSMs for High Speed Serial Lines
There are three FRSMs for high speed serial lines.
• AX-FRSM-HS1 supports back cards that provide either two HSSI interfaces or four X.21
interfaces.
• MGX-FRSM-HS1/B supports a back card that provides four V.35 interfaces.
• MGX-FRSM-HS2 supports a back card that provides connections for two HSSI lines.
AX-FRSM-HS1 and MGX-FRSM-HS1/B Features
Both FRSM-HS1 modules support the following features:
• Card throughput of 20 Mbps (bidirectional) at an average frame size of 130 octets.
• HSSI line rates of up to 16 Mbps when a single port is configured per card. HSSI line rates of up
to 8 Mbps when both HSSI ports are configured.
• X.21 line rates of 1 port x 10 Mbps, 2 ports x 8 Mbps, 3 ports x 4 Mbps, or 4 ports x 4 Mbps.
• Up to 200 virtual connections in DTE and DCE modes.
• 1:1 redundancy using Y-cabling.
• All standard MGX 8220 edge concentrator FRSM features, including the same data link protocols
as other FRSMs.
• ForeSight integrated on the high-speed FRSM as a feature license.
• FR-ATM network internetworking and service internetworking support.
• Configuration of ATM Frame user network interface (FUNI) or ATM Frame NNI on a per-port
basis.
• Frame forwarding and FUNI support.