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Cisco uBR10012 Universal Broadband Router Software Configuration Guide
OL-1520-08
Chapter1 Overview of CiscouBR10012 Universal Broadband Router Software
Supported Software Features for the CiscouBR10012 Router
•Guard time size
•Last code word shortened or lengthened
•Maximum burst size (see also
•Preamble length and unique word length
•Scrambler enable and disable
•Scrambler seed value
For additional information about configuring dynamic upstream modulation and modulation profiles,
refer to the chapter titled Spectrum Management for the Cable Modem Termination System in the Cisco
Cable Modem Termination System Feature Guide.
Dynamic Upstream Modulation
This spectrum management feature provides improved performance using proactive spectrum
management functions. This feature monitors the signal-to-noise ratio (SNR) and forward error
correction (FEC) counters in the active return path of each upstream port. It tracks whether the upstream
channel signal quality can support the modulation scheme configured, and adjusts to the most robust
modulation scheme when necessary.
For additional information about configuring dynamic upstream modulation and modulation profiles,
refer to the chapter titled Spectrum Management for the Cable Modem Termination System in the Cisco
Cable Modem Termination System Feature Guide.
EtherChannel Support on the Cisco uBR10012 Universal Broadband Router
Cisco IOS Release 12.3(9a)BC introduces support for Gigabit EtherChannel (GEC) on the Cisco
uBR10012 universal broadband router with the PRE2 performance routing engine modules. Cisco IOS
Release 12.3(9) supports Gigabit Ethernet interfaces for IEEE 802.1Q inter-VLAN trunking with
increased bandwidth on the Cisco uBR10012 router.
Note FastEtherChannel (FEC) interfaces and ATM trunking are not supported on the Cisco uBR10012 router.
EtherChannel provides Gigabit Ethernet (GE) speeds by grouping multiple GE-speed ports into a logical
port channel that supports speeds up to 8 Gbps. This provides fault-tolerant, high-speed links between
switches, routers and servers.
Trunking is configured between the switch and the router to provide inter-VLAN communication over
the network. Trunking carries traffic from several VLANs over a point-to-point link between the two
network devices. In a campus network, trunking is configured over an EtherChannel link to carry the
multiple VLAN information over a high-bandwidth channel.
For additional information about configuring EtherChannel on the Cisco uBR10012 router, refer to the
following document on Cisco.com:
•EtherChannel for the Cisco Cable Modem Termination System
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cfig_nts/ethrchan.htm
Management Information Base (MIB) Changes and Enhancements
MIB enhancements in Cisco IOS Release 12.3(17a)BC provide enhanced management features that
enable the CiscouBR 7200 Series router and the CiscouBR10012 router to be managed through the
Simple Network Management Protocol (SNMP). These enhanced management features allow you to:
•Use SNMP set and get requests to access information in Cisco CMTS universal broadband routers.
•Reduce the amount of time and system resources required to perform functions like inventory
management.