10
Release Notes for the Cisco811 and 813 Routers forCisco IOSRelease 12.1(2)XF
78-11070-02, Rev. H0
System Requirements
CiscoView Application Support
The CiscoViewapplication supports the Cisco 800 series routers. The CiscoView application provides
dynamic status, statistics, and comprehensive configuration information for Cisco switches, routers,
concentrators, and adapters. It displays a graphical view of Cisco devices. This network management
tool also provides configuring and monitoring functions and offers basic troubleshooting tips.
Dial Peer Limitation
The isdn answer1 and isdn answer2 commands determine which called telephone numbers, for
example, 555-1111 and 555-2222, a Cisco 800 series router can answer.Using these commands limits
a router to using the two dial peers that contain the telephone numbers 555-1111 and 555-2222. (When
not using these commands, a router can use up to six dial peers.) A sample scenario in which the isdn
answer1 and isdn answer2 commands are used is when a Cisco 801 or Cisco 803 router is connected
with other ISDN devices to an ISDN S-bus.
Downloading Images
Before attempting to download new images, you must firstdelete files in the router Flash memory. Be
sure to use the delete command, not command erase, to free up space. Entering erase removesall files,
including the configuration.
Excessive ISDN Line Activation
The following protocols send updates that can cause an ISDN line to be activatedexcessively, thereby
increasing your monthly ISDN line cost:
•IP
•User Datagram Protocol (UDP)
•IPX
•Cisco Discovery Protocol (CDP)
•Simple Network Time Protocol (SNTP)
See the Cisco 800 Series Routers Software Configuration Guide to set up extended access lists to
preventIP, UDP,IPX, and SNTP updates from activating the ISDN line. For CDP,make certain that you
enter the no cdp enable command to disable CDP.
Hanging During Boot
If an illegal console configuration is issued to the router, the console fails the POST tests during boot
and causes the router to halt. The only way to recover from this state is to pull apart the soldered boot
Flash and re-burn the Boot ROM. This problem has been resolved in TinyROM version 1.0(3), a
downloadable ROM upgrade available from Cisco.com.Contact Cisco to upgrade to this version or
later, and prevent this problem fromoccurring.