I have seen a similar issue with a VPN connection. The problem was caused when an NT admin wrote a batch file that did a large FTP across the link every 45 minutes. The large volume of traffic caused the router cpu to spike due to the encryp/decryp load… hence slow performance.
I would try to check to see if there is a large amount of traffic on the VPN when you are experiencing slow response. Mike kuma kk wrote: > > Hello group, > > I am facing slow response issue when connecting to Mainframe. > This is how my > connectivity goes > > [EMAIL PROTECTED] A ---> FrameRelay(WAN) --> Location B ---> Site to > Site VPN (T1) > --> [EMAIL PROTECTED] C > > I have captured the packet using ethereal and found that Source > PC TCP > Maximum Segment Size is 1456bytes and that of Mainframe is > 4056bytes. This > slow response issue with mainframe is intermittent. And there > is no issue at > the mainframe as it works fine when I connect from within the > Location C > > Source side there is no issue since for some other mainframe at > Location D, > I am getting good response and the Source PC MSS is 1456bytes > and that of > Mainframe MSS is 536bytes. The only difference in this > connectivity is that > this mainframe is connected using an framerealy from Location B > to Location > D (given below) > > [EMAIL PROTECTED] A ---> FrameRelay(WAN) --> Location B ---> > FrameRelay(WAN)--> > [EMAIL PROTECTED] D > > I would like to know whether the MSS Size of 4056bytes from > mainframe in the > Location C attributes to the slow reponse issue. Is the high > MSS size is due > to Site-to Site VPN from Location B to C( due to excess header > information > due to VPN) or something else. > > Would appreciate your response. > > TIA, > Kum > > _________________________________________________________________ > Design your holidays. At your convenience. > http://www.flexihols.com/2003/index.php Click here. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72041&t=72030 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
