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Supervisory_Routing_Module_Release_4_(SRM4)_MD_US-EN

Supervisory Routing Module Release 4 (SRM4) for CMTS Edge Router

The Supervisory Routing Module Release 4 (SRM4) runs all the routing protocols and control applications for the BSR 64000 CMTS/edge router and enables high-performance, standards-based routing at the distribution hub and regional headend.

Cable operators need carrier-class implementations of major routing protocols so they can efficiently deploy new services and integrate diverse technology across their networks, and the SRM4 supports major IP routing protocols and allows cable operators to integrate new services onto existing networks using industry-standard protocols.



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  • Runs all routing protocols supported by the BSR 64000 and provides forwarding information to the other modules in the BSR 64000 chassis.
  • Hosts the systems 16x16 2 Gbps switch fabric that provides the connectivity between modules across the backplane.
  • Robust protocol support enables standards-based integration with existing infrastructure.
  • Interfaces with other BSR 64000 modules in the chassis via Fast Ethernet links.
  • Compatible with DOCSIS 1.x, 2.0 and 3.0.
  • Supports IP v6 and channel bonding.
  • Full-featured routing with support for intradomain, interdomain, and multicast routing protocols, including IP v6, OSPF v2, BGP4, RIP v1/v2, IGMP, VRRP, and PIM-SM.
  • Supports Layer 2 forwarding and Layer 3 routing as well as wire-speed packet classification and forwarding.
  • Managed via SNMP V1/v3, standard DOCSIS and IETF MIBs, and by a command line interface.
  • Supports SmartFlow Quality of Service (QoS) classification for thousands of flows at wire-speed with guaranteed Service Level Agreements (SLAs).
  • Fully compatible with SRM3 to support planned migrations.
  • Supports Building Integrated Timing Supply (BITS).