Tunde, It sounds like your users are getting blocked by spanning tree on bootup. Since the switch is spending ~50 seconds running spanning-tree before it forwards any data, the DHCP requests aren't even getting through.
PortFast bypasses the usual spanning tree thing. It allows the port to forward data almost as soon as its initialized. It a good idea to only use portfast on a port to has an end node like a PC, server, or printer. If your switch uses CatOS 7.1 or Native IOS 12.1(11)EX then it implements Rapid spanning tree (802.1w) which shortens the time spent learning the network before forwarding. You still need to use the portfast keyword to configure the port as an edge port though. Here's a link about it: http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfa.shtml Hope this helps. Karen *********** REPLY SEPARATOR *********** On 2/7/2003 at 12:16 PM Tunde Kalejaiye wrote: >hi all, > >we just upgraded our network to a switched, a catalyst 4006 to be >exact....some users have been getting 'no domain server available ....' >error message. they usually have to try more than 4 - 6 times to >successfully log on to the network. >has anybody come across this problem before? what work around did u use >besides configuring static ip addresses? >thanks for your response(s) in advance > >Tunde Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62677&t=62632 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
