You need to apply MSS adjustment on LAN interface, not the dialer.
-- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert Mailto: markom_at_ipexpert.com Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Community: http://www.ipexpert.com/communities :: Sent from my phone. Apologies for errors and brevity. :: On 1 Jul 2010, at 21:35, Sidney Spencer <ccie22926_at_gmail.com> wrote: > I tried changing the MTU as well as the MSS on the dialer interface an still > have the same problem.. Any other thoughts?? There are about 30 machines > that this is affecting if changing the MTU on the workstation is the fix, I > would like to see if there is anything else before hand.. Thanks all.. > > On Thu, Jul 1, 2010 at 10:14 PM, Tyson Scott <tscott_at_ipexpert.com> wrote: > >> Your dialer MTU should be no higher than 1492. Right now it is at the >> default of 1500. >> >> Try changing the MTU on the host itself to 1300 or something. I changed my >> MTU on my laptop to 1350 to solve problems when windowing was being ignored >> by servers. >> >> To do it on a windows machine follow these instructions >> >> http://smallvoid.com/article/vista-tcpip-mtu.html >> >> See if that solves the problem >> >> Regards, >> >> Tyson Scott - CCIE #13513 R&S, Security, and SP >> Managing Partner / Sr. Instructor - IPexpert, Inc. >> Mailto: tscott_at_ipexpert.com >> >> >> -----Original Message----- >> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of >> Sidney Spencer >> Sent: Thursday, July 01, 2010 11:02 PM >> To: Cisco certification >> Subject: Very Strange Problem >> >> Hello all, >> >> >> I have run into an issue that I am having the hardest time trying to >> figure >> out what it is. Here is what is happening: >> >> I have a 2801 Router with and ASDL wic installed in it. There is currently >> 3 site to site VPN's configured, and basic routing, and PAT. What is >> happening is every time a user behind this router tries to access the >> internet (going to a site www.yahoo.com or facebook etc) it basically sits >> there and just continues to load and take forever but never comes up, if I >> go to www.google.com that has no images to load it comes up really quick >> with no issue. Here is a kicker, if I try to load a web page on internal >> site on the other side of the tunnel everything comes up as normal with no >> problems, the issue is only when I try to access external websites from >> that >> location. I am able to ping and telnet to port 80 with no problems. I >> thought it was a fragmentation issue, so I changed MTU and MSS as low as >> 1200 and the problem still persists. Has anyone else seen this issue? I >> found the issue on the internet but have not seen where anyone has come up >> with a fix for it, so I thought I would see if anyone here may have seen >> this issue and resolved? >> >> The configuration is pretty basic (snippits) >> >> F0/0 - Shutdown >> ! >> interface FastEthernet0/1 >> description $ES_LAN$ >> ip address 192.168.90.1 255.255.255.0 >> ip nat inside >> ip virtual-reassembly >> duplex auto >> speed auto >> >> interface ATM0/3/0 >> no ip address >> no ip mroute-cache >> no atm ilmi-keepalive >> dsl operating-mode auto >> hold-queue 224 in >> ! >> interface ATM0/3/0.1 point-to-point >> pvc 8/32 >> encapsulation aal5snap >> pppoe-client dial-pool-number 1 >> ! >> ! >> interface Dialer1 >> ip address negotiated >> ip nat outside >> ip virtual-reassembly >> encapsulation ppp >> dialer pool 1 >> dialer-group 1 >> no cdp enable >> ppp authentication chap pap callin >> ppp chap hostname xxxxxxxxx >> ppp chap password 0 xxxxxxxx >> ppp pap sent-username xxxxxxxxxx password 0 xxxxxxxxx >> >> ip route 0.0.0.0 0.0.0.0 Dialer1 >> >> ip nat inside source route-map internet_nat interface Dialer1 overload >> >> >> ADSL is used because that is the only option in the location in which this >> router is located. Any ideas on where I should be looking is much >> appreciated, the next step for me is to probably open a TAC case but wanted >> to get others thoughts first.. >> >> >> Sid >> >> >> Blogs and organic groups at http://www.ccie.net >> >> _______________________________________________________________________ >> Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html Blogs and organic groups at http://www.ccie.netReceived on Fri Jul 02 2010 - 02:28:36 ART
This archive was generated by hypermail 2.2.0 : Sun Aug 01 2010 - 19:19:15 ART