I'm re-reading Cisco Press' "Building Cisco Remote Access Networks," edited by Catherine Paquet. It's a great book, but they mangled the discussion of "dialer hold-queue" and "dialer enable-timeout" for PPP callback.
Do I understand this correctly after reverse engineering what maybe they meant to say: There's a "client router" and "server router" when you do PPP callback. The client makes the original call. The routers disconnect that call and the server calls back. That way the server gets charged for the longer conversation that is (possibly) a long-distant call. If the client doesn't get a callback quickly, you don't want it to try again for a while because then the line would be busy when the server does call back. So to avoid the client restarting its initial call too quickly, you configure a relatively long seconds value in this command: "dialer enable-timeout seconds". You can also configure "dialer hold-queue packets" to tell the client to queue up packets for sending once the server calls back and that call gets established. On the server, you can also use "dialer enable-timeout" so that it doesn't call back too quickly, which would be bad if the client is still hanging up from the first call. The enable-timeout on the client should be approximately 4 times the enable-timeout on the server to minimize problems. That's not exactly what the book says, but the book mangled this section and combined the timeout and queued packets into one incomprehensible discussion. (Otherwise, I really do think the book is very well written with few mistakes. The ISDN and PPP chapters, especially, show that the editor really knows her stuff and that the course developers do too.) Of course, an author with the last name of Paquet had to go into networking! :-) Thanks for your help, Group Study. _______________________________ Priscilla Oppenheimer www.troubleshootingnetworks.com www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64955&t=64955 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
