If your FR cross several hops, that's in control of service provider and may be you never know, you will need this to know what really the state of PVC. Some backup strategies like backup interface, are based on the state of interface to determine path selection. Routing may have their mechanism like hello or rupdate timer, but layer 2 state will help router to determine problem more quickly in some case. May be you will not need that in lab environment because your local interface always reflect actual state of PVC.
CCIE Study Professional Checklist http://www.geocities.com/berdde/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of john zou Sent: Tuesday, October 23, 2001 9:35 AM To: [EMAIL PROTECTED] Subject: how to use end-to-end keepalive feature? [7:23832] Hi, Refer to the link: http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/wan_ c/wcdfrely.htm#xtocid2218540 Frame Relay end-to-end keepalives enable monitoring of PVC status for network monitoring or backup applications and are configurable on a per-PVC basis with configurable timers But I cann't understand how to use this feature for backup. Could any one tell me? -- ShanJun Zou Wafer Systems(China) Limited Tel:020-87520011 FAx:020-87520021 Mobil:13822152240 E-mail: [EMAIL PROTECTED] Web: www.wafersystems.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23903&t=23832 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]