Frame Service Module Features

Four-Port Unchannelized Frame Service Module for V.35

The MGX-FRSM-HS1/B provides unchannelized Frame Relay service across four V.35 lines. The maximum throughput for the card is 16 Mbps. The maximum rate on a line is 8 Mbps. Without the cost of a T3 or E3 card, the MGX-FRSM-HS1/B provides greater that T1 or E1 speeds on a port as well as a choice of 50 line rates in the range 48 Kbps–8 Mbps.

Frame Service Module Features

This section first lists the features common to all FRSM models then lists the features of each model. All FRSMs support:

•Frame Relay-to-ATM Network Interworking (NIW) as defined in FRF.5.

•Frame Relay-to-ATM Service Interworking (SIW) with or without translation as in FRF.8.

•Frame forwarding.

•ATM Frame-UNI.

•Maximum frame sizes of 4510 bytes for Frame Relay and 4096 bytes for ATM-FUNI.

•Per-virtual-circuit (VC) queuing in the ingress direction (towards the Cellbus). Traffic arriving at the network on a connection has a dynamically assigned buffer at the entrance to the switch. Buffer size depends on the amount of traffic and the service-level agreement (SLA).

•Advanced buffer management. When a frame arrives, the depth of the queue for the LCN is compared against the peak queue depth scaled down by a specified factor. The scale-down factor depends on the amount of congestion in the free buffer pool. As the free buffer pool begins to empty, the scale-down factor is increased, preventing an excessive number of buffers from being held up by any single LCN.

•Multiple, priority-level queuing to support class of service on the egress. The FRSM services egress queues according to a weighted priority. The priority depends on the percentage of logical port bandwidth needed by all connections of a particular type on a port. The FRSM supports a:

—High-priority queue

—Real-time Variable Bit Rate (rt-VBR) queue

—Common queue for non-real-time Variable Bit Rate (nrt-VBR) and ABR connections

—UBR queue

•Initial burst per channel. After a period of silence, the FRSM sends a configurable number of bytes at a peak service rate.

•The ForeSight option. This Cisco mechanism for managing congestion and optimizing bandwidth continuously monitors the utilization of ATM trunks. It proactively adjusts the bandwidth for connections to avoid queuing delays and cell discards.

•Consolidated Link Layer Management (CLLM), an out-of-band mechanism to transport congestion related information to the far end.

•Dual leaky bucket policing. Within the basic parameters such as committed burst, excess burst, and CIR, incoming frames go into two buckets: those to be checked for compliance with the committed burst rate and those to be checked for compliance with the excess burst rate. Frames that overflow the first bucket go into the second bucket. The buckets “leak” by a certain amount to allow for policing without disruption or delay of service.

6-20Cisco MGX 8850 Installation and Configuration, Release 1.1.00, Part Number 78-6186-02

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Cisco Systems MGX-FRSM-2T3E3, MGX-FRSM-HS2 Frame Service Module Features, Four-Port Unchannelized Frame Service Module for
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MGX-FRSM-HS2, MGX-FRSM-2T3E3, MGX-FRSM-2CT3 specifications

Cisco Systems is a leader in networking technology and infrastructure, providing solutions that drive innovation and efficiency for businesses worldwide. Among its diverse range of products, the MGX series stands out as a pivotal component for the network-centric era, especially with models like MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2. These modules are primarily designed for the MGX 8800 series routers, facilitating efficient traffic management and service delivery.

The MGX-FRSM-2CT3 is a versatile module that supports two T3 connections. It allows network operators to seamlessly integrate high-capacity circuit-switched and packet-switched data on a unified platform. This versatility is crucial for service providers looking to enhance their bandwidth offerings while ensuring reliable performance across voice, video, and data applications.

In contrast, the MGX-FRSM-2T3E3 module caters to operators needing E3 support. This feature allows for efficient data transport over a broader bandwidth, catering to European standards. The E3 configuration is vital for service providers operating in Europe or regions that utilize E3 technology prominently.

The MGX-FRSM-HS2 module is another significant offering, designed to accommodate the increasing demand for high speed and high capacity. It supports higher-order TDM and packet technologies, enabling operators to implement advanced services such as VoIP, video conferencing, and other data-intensive applications. This module provides scalability and reliability, making it ideal for next-generation networks.

All three modules leverage Cisco’s advanced switching and routing technology, ensuring optimal performance and minimal latency. The integration of Quality of Service (QoS) features allows network administrators to prioritize traffic types effectively, ensuring mission-critical applications receive the necessary bandwidth.

Additionally, these MGX modules support various signaling protocols, enabling interoperability with existing network infrastructure while also facilitating the migration to newer technologies. They play an essential role in modernizing telecom networks, allowing service providers to adapt to changing market demands and technology landscapes.

In summary, the Cisco MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2 modules are key components for businesses looking to enhance their networking capabilities. With their robust support for T3 and E3 technologies, high scalability, and advanced QoS features, these modules empower service providers to deliver a wide range of services, drive innovation, and meet the growing demands of users in an increasingly connected world.
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