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DHCP WAN not working after HA failover?

dswartz

I have the most recent UTM software appliance running in HA mode.  ISP is verizon FIOS (DHCP address on WAN).  I've noticed that when an HA failover occurs, the host that is now master no longer has WAN connectivity - the dashboard shows an error indication for the WAN interface.  If I go into the Interfaces screen, and click the 'renew' button, everything comes up just fine, but this is obviously less than optimal :)  I am using a 24-port edgeswitch, with ports 17, 18 and 19 in VLAN 2.  The two UTM appliances connect to 18 and 19, and the verizon ONT (think cable modem) connects to 17.  At first I thought this was some kind of spanning tree issue, but all 3 ports are configured as edge ports, so they should start working very quickly.  I did the most recent firmware update this AM, and it of course had to update and reboot both nodes.  Both times, the WAN interface in UTM showed as down, with an error indication.   ssh to the master node and I see this:

2019:07:17-07:21:13 gateway-1 dhclient: DHCPREQUEST for XXX on eth1 to 255.255.255.255 port 67
2019:07:17-07:29:08 gateway-2 dhclient: DHCPREQUEST for XXX on eth1 to 255.255.255.255 port 67
2019:07:17-08:41:01 gateway-1 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 7
2019:07:17-08:41:01 gateway-1 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
2019:07:17-08:41:01 gateway-1 dhclient: DHCPOFFER of XXX from QQQ
2019:07:17-08:41:01 gateway-1 dhclient: DHCPREQUEST for XXX on eth1 to 255.255.255.255 port 67
2019:07:17-08:41:01 gateway-1 dhclient: DHCPACK of XXX from QQQ

07:21:13 was when I told the UTM to perform the update.  You can see it did dhcprequest twice, with no answer, then gave up.  08:41:01 is when I noticed I was off the air, and clicked the 'renew' button, at which point it did the full sequence of operations.  I freely admit I'm not that savvy with switching protocols, so I'm not sure what is going on here.  Any help would be appreciated.  As things are now, HA isn't really giving me any benefit, as a failure will cause a failover, but I will still be off the air :(



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  • 0 in reply to BAlfson

    Yeah, I'll give that a try, thanks!

  • 0 in reply to dswartz

    Sorry for the late reply.  Somehow, I never got an email ping for your latest reply.  I've given up on HA for now, as the failure doesn't to be related to failback (e.g. I've seen more than one instance where the DHCP client doesn't get a reply quickly enough and gives up [apparently forever]).  If I could somehow hook into the HA code, so that it ran a shell script on node X when node X takes over service, I could sleep for a few seconds and then run whatever sophos script kicks the dhcp client into action.  Bummer, because this is so potentially useful to me...

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