Cisco Broadband Cable Command Reference Guide

Chapter 2 Cisco Cable Modem Termination System Commands
Table 2-2 Principle Software Features (continued)
Feature Category Item
Cable Interface Bundling and
Subinterfaces
OL-1581-05
Cisco CMTS Feature Summary
IP address conservation with routing capabilities over a two-way cable plant; supports
sharing one IP subnet across multiple cable interfaces grouped into a cable interface
bundle with support for bundle masters; can be used with generic routing encapsulation
(GRE) tunnel setups and Multiprotocol Label Switching (MPLS) configurations.
Note Feature sets differ in support of overlapping IP addresses for subinterfaces.
Cable Monitor The cable monitor command allows an external LAN packet analyzer to monitor
inbound and outbound data packets for specific types of traffic between the Cisco CMTS
and the CMs on a cable interface. This feature enables the CMTS administrator to
analyze traffic problems with customer data exchanges. For complete information on
configuring and using this feature, see the Cable Monitor for the Cisco CMTS chapter in
the Cisco CMTS Feature Guide, available on Cisco.com and the Customer
Documentation CD-ROM.
Caching Web Cache Control Protocol (WCCP) and WCCP Version 2 (WCCPv2) support.
Clock Synchronization Increased reliability for Voice-over-IP (VoIP) transmissions to synchronize VOCODEC
with a clock source and data transmissions between endpoints.
Concatenation Increased upstream throughput by handling concatenated bursts of multiple MAC
frames from CMs that support concatenation.
Debugging Command-line interface (CLI) to help debug configuration and operational problems
(for example, why CMs or set-top boxes (STBs) are not working properly on the CMTS:
Internal Modem Configurator File
Editor
Inter-Switch Link (ISL) Bridging
on Noncable Interfaces
Layer 3 Encapsulations
(for backbone connections)
Troubleshooting changes in state, including detecting a CM flap where a flap is
defined as a CM being registered with the CMTS; deregistering; and then
immediately registering again.
Diagnosing whether a CM problem is related to radio frequency (RF) issues such as
ingress noise or power levels, or related to TCP/IP and provisioning.
Tracking and debugging MAC-layer DOCSIS messages for CMs.
Displaying state of all CMs (for example, current registration status, whether CMs
have successfully completed registration and are operational).
Obtaining displays of ARP and other entries and the source of each entry.
Turning on debugging to individually monitor certain types of processes only, such
as ARP, DHCP, IP forwarding, IP filters, or routing protocols.
Offers built-in CM configuration file generation and storage as part of the Cisco CMTS
command-line interface (CLI).
Cisco Inter-Switch Link (ISL) protocol support to maintain virtual local area network
(VLAN) information.
Cisco High-Level Data Link Control (HDLC).
Frame Relay.
Point-to-Point Protocol (PPP).
Multiprotocol Label Switching (MPLS).
Multicast Services Internet Group Management Protocol (IGMP).
Protocol Independent Multicast (PIM)—PIM dense mode.
Distance Vector Multicast Routing Protocol (DVMRP).
Cisco Broadband Cable Command Reference Guide
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