Bangerter Markus writes: > did anyone (running OSPF on a medium to large scale (>20 routers)) > tuned his OSPF default hello/hold/dead timers? And if yes to what > kind of values?
I used to set the timers to 2 seconds (hello-interval) and 6 seconds (dead-interval), respectively, on all fast point-to-point links (ATM and GigE). But the idea hasn't caught on with my colleagues, so many links run with the default timers. > why do you want to tune ospf timers ? Faster detection of interrupted links that don't cause "physical" down-ness of the interface, such as ATM PVCs without OAM capability or some kinds of Ethernet links. > if you do so, you have to be quite carefull when you bring new > routers in this network. when you encounter a timer-mismatch you > router will never get ospf adj. Right. Fortunately this is easy enough to notice. But since you usually configure both ends of a link together (so that IP addresses are in the same subnet, the OSPF metric is the same on both sides etc.), you can also remember setting the OSPF hello and dead timers consistently. > actually i'm running a 25 ospf neighbor network with default timers > and it works as designed. One would hope so! -- Simon Leinen [EMAIL PROTECTED] SWITCH http://www.switch.ch/misc/leinen/ Computers hate being anthropomorphized. ---------------------------------------------- [EMAIL PROTECTED] Maillist-Archive: http://www.mail-archive.com/swinog%40swinog.ch/
