Any ideas where a good place to ask for help on this topic is? Is there a UCARP mailing list? I realize it might be a little specific for this list.
Thanks, Chris On Sun, Nov 13, 2011 at 8:13 PM, Chris Snyder <ch...@keyedupmedia.com> wrote: > Hey Guys, > > First time here on the list, so hopefully I get everything right here. > > I have two Squeeze systems that I have setup with UCARP for auto-failover. > > Here's the relevant /etc/network/interfaces of Server 1: > > 10 iface eth0 inet static > 11 address 192.168.1.21 > 12 netmask 255.255.255.0 > 13 gateway 192.168.1.1 > 14 dns-nameservers 8.8.8.8 8.8.4.4 > 15 > 16 # UCARP > 17 ucarp-vid 3 > 18 ucarp-vip 192.168.1.20 > 19 ucarp-password [pass-here] > 20 ucarp-advskew 100 > 21 ucarp-advbase 1 > 22 ucarp-master no > 23 > 24 > 25 iface eth0:ucarp inet static > 26 address 192.168.1.20 > 27 netmask 255.255.255.255 > > > And /etc/network/interfaces of Server 2: > > > 10 iface eth0 inet static > 11 address 192.168.1.22 > 12 netmask 255.255.255.0 > 13 gateway 192.168.1.1 > 14 dns-nameservers 8.8.8.8 8.8.4.4 > 15 > 16 # UCARP > 17 ucarp-vid 3 > 18 ucarp-vip 192.168.1.20 > 19 ucarp-password [pass-here] > 20 ucarp-advskew 100 > 21 ucarp-advbase 1 > 22 ucarp-master no > 23 > 24 iface eth0:ucarp inet static > 25 address 192.168.1.20 > 26 netmask 255.255.255.255 > > Now this setup works great on the LAN. I can access 192.168.1.20 fine > while pulling the Ethernet cables from either server. The problem is > that I'm trying to forward an external IP to 192.168.1.20 through a > NAT. > > It forwards fine when both machines first come up and Server 1 is > dominant. I can ping 192.168.1.20 and all is well. I can ping the > external IP and all is well. Then if I pull the cable on Server 1, > Server 2 picks up fine -- I can ping 192.168.1.20 and all is well. > However the external IP does not forward to 192.168.1.20. It acts as > if the forward is non-existent for Server 2. If I plug Server 1 back > in and unplug Server 2 so Server 1 takes back over, the external IP > forwards again. > > I'm thinking this has something to do with UCARP's multicast. There is > traffic to a multicasted IP of 224.0.0.18. Is it possible this router > (Kentrox q2300) is having trouble with this multicasted IP address? > > I guess I'm just looking for ways to troubleshoot where the problem > with this is. What gets me is that the LAN IP works great in all > regards, it's just the forwarding of the external IP address is > problematic. How can I get UCARP to use a broadcasted address rather > than multicasted one so I can try that? > > Thanks guys, > Chris > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/ca+u_jxy60uzllt9uers30znsemjdvtaz+a1g3dnrmdewyur...@mail.gmail.com
