P.S. see RFC 3036 for detail -- Sections 2.5.5 and 2.5.6 On Sun, Mar 21, 2010 at 1:14 AM, Joe Astorino <[email protected]> wrote: > The hello and holddown timers are more related to the actual > adjacency. The router sends out a hello every 5 seconds to bring up > adjacency's. If an adjacency is up, and it does not hear a hello for > the hold time the adjacency goes down. > > Now once you have an adjacency actually up, information is exchanged > over that session. The integrity of that session is monitored via a > different mechanism. That is where you get into the keepalive timer. > Each router keeps a keepalive timer for each session. The keepalive > timer has to do with actual LDP PDUs...if a router does not receive an > LDP PDU after keepalive time you have a problem > > In summary -- LDP adjacency is your hello/hold. LDP PDU and session > itself is your keepalive timer. > > HTH > > > > On Sat, Mar 20, 2010 at 11:50 PM, Taqdir Singh <[email protected]> wrote: >> Hi all, >> >> LDP hello is 5 sec and keepalive is 60 sec by default... why two >> timers are needed ? how two interact with each other ? >> >> i read that if if ldp nei.. doesnt get keepalive for 180 sec then LDP >> neighborship is torn down.. but what about hello of 5 and holdown timer >> (15sec) then ? >> >> -- >> Taqdir Singh >> +91 -9911709496 >> +91 -8010415988 >> >> "do today what others wont so you can live tomorrow as others cant" >> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> > > > > -- > Regards, > > > > Joe Astorino - CCIE #24347 (Earned not bought) > Sr. Technical Instructor - IPexpert > Mailto: [email protected] > Telephone: +1.810.326.1444 > Live Assistance, Please visit: www.ipexpert.com/chat > eFax: +1.810.454.0130 > > IPexpert is a premier provider of Self-Study Workbooks, Video on > Demand, Audio Tools, Online Hardware Rental and Classroom Training for > the Cisco CCIE (R&S, Voice, Security & Service Provider) > certification(s) with training locations throughout the United States, > Europe, South Asia and Australia. Be sure to visit our online > communities at www.ipexpert.com/communities and our public website at > www.ipexpert.com >
-- Regards, Joe Astorino - CCIE #24347 (Earned not bought) Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
