CiscoView Application Support, Dial Peer Limitation

System Requirements

CiscoView Application Support

The CiscoView application 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 first delete files in the router Flash memory. Be sure to use the delete command, not command erase, to free up space. Entering erase removes all files, including the configuration.

Excessive ISDN Line Activation

The following protocols send updates that can cause an ISDN line to be activated excessively, 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 prevent IP, 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 from occurring.

	Release Notes for the Cisco 811 and 813 Routers for Cisco IOS Release 12.1(2)XF
10	78-11070-02, Rev. H0