david klein <root@xxxxxxxxxxxx> wrote: >Check to see if the client, switch and up-stream router agree on maximum >frame-size (i.e. if one is trying to do jumbo-frames and the other can't, >it can cause troubles). Make sure the switch-port that the client is using >is setup as an access-port, not a trunk. Set the client's port for >spanning-tree portfast and turn on BPDU-guard. Thank you for the response. Had already tried spanning-tree portfast before turning off spanning-tree entirely, no difference. I will look into the other things you mention. Updated observations: - Problem happens exactly the same with a switch at the opposite end of the complexity spectrum - Netgear 5 port 10/100Mbps Switch FS605 v3. - I noticed that on the good switch, you see two eth0 dialogs flash up before it proceeds; on a bad switch, only see one eth0 dialog then the empty blue screen. - If while it's in the failure state with the empty blue screen, I move the target's network connection to the good switch, it immediately takes off and continues the kickstart process properly. >On Sun, Nov 13, 2011 at 1:53 PM, whitivery <co55-sy1t@xxxxxxxxxxxxxxx>wrote: > >> I have a working Cobbler server, using it to load units with >> CentOS 5.7. It works fine with a simple Dell 2716 switch >> connecting the server and targets. Also with a LinkSys RV016. >> >> Substituting a Cisco 2960 switch, it fails. It network boots, >> shows the PXE menu, I choose an entry, it gets a DHCP address on >> its eth0, and starts loading including getting its kickstart via >> HTTP. But when it goes to load the driver disk image via NFS, it >> hangs. The Anaconda Alt-F4 screen shows it not seeing the NFS >> server; after 2 minutes of trying, it times out and the Alt-F4 >> screen shows an error dump. >> >> Tried the switch with and without RST (rapid spanning tree) >> active, no difference. >> >> The switch seems to work OK for normal network operations outside >> the kickstart environment, for what we use. >> >> Any idea what it might be that could be interfering with the NFS >> disk driver loading step? >> >> >> _______________________________________________ >> Kickstart-list mailing list >> Kickstart-list@xxxxxxxxxx >> https://www.redhat.com/mailman/listinfo/kickstart-list >> _______________________________________________ Kickstart-list mailing list Kickstart-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/kickstart-list
