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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter 1 Overview of Cisco uBR7200 Series Software
cops tcp window-size
Configurable Alternate Termination System Information Messages
The registration IP address that is included in Termination System Information messages is now
configurable for telco return. Previously, the downstream channel IP address of the uBR7200 was used
as the registration IP address.
To select a different IP address for the telco-return cable modem to send its registration requests, use the
cable telco-return registration-ip
command in cable interface configuration mode. To restore the
default value, use the
no
form of this command.
cable telco-return registration-ip
ip-address
no cable telco-return registration-ip
Syntax Description
For additional information about telco return and the
cable telco-return registration-ip
command, refer
to these documents on Cisco.com:
•
“Telephone Return for the Cisco uBR7200 Series Cable Router” chapter in the
Cisco Cable Modem
Termination System Feature Guide:
http://www.cisco.com/en/US/docs/cable/cmts/feature/guide/cmtsfg.html
•
cable telco-return registration-ip Command in the Cisco IOS CMTS Cable Command Reference Guide
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_09_cable_t.html#wp1014477
Easy IP (Phase 1)
The Easy IP (Phase 1) feature combines Network Address Translation (NAT) and point-to-point protocol
(PPP)/Internet Protocol Control Protocol (IPCP). This feature enables a Cisco router to negotiate
automatically its own registered WAN interface IP address from a central server and to enable all remote
hosts to access the Internet using this single registered IP address. The ability of multiple LAN devices
to use the same globally unique IP address is known as overloading. Because Easy IP (Phase 1) uses
existing port-level multiplexed NAT functionality within the Cisco IOS software, IP addresses on the
remote LAN are invisible to the Internet.
With PPP/IPCP, the Cisco uBR7200 routers automatically negotiate a globally unique (registered) IP address
for the dialer interface from the ISP router. For additional information, refer to the following document on
Cisco.comk:
•
Configuring Easy IP
www.cisco.com/en/US/docs/ios/12_0/dial/configuration/guide/dcezip.html
Fast-Switched Policy Routing
IP policy routing can now be fast switched. Prior to this feature, policy routing could only be process
switched, meaning that on most platforms, the switching rate was approximately 1000 to 10,000 packets
per second. Such rates were not fast enough for many applications. Users that need policy routing to
occur at faster speeds can now implement policy routing without slowing down the router.
Fast-switched policy routing supports all of the
match
commands and most of the
set
commands with a
few restrictions. Refer to the chapter titled
“Configuring IP Routing Protocol-Independent Features”
in
the
Cisco IOS IP Configuration Guide
, Release 12.2
on Cisco.com.
ip-address
Registration IP address that is sent in Termination System Information
(TSI) messages. Value is any of the cable interface's IP addresses.
