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WAN port LAG does not quire IP address via DHCP

LHerzog over 1 year ago

on our SG430 with 2-Port LAG for one WAN line, we do not receive IP address anymore so that WAN line is unusable.

Cluster is HA, Firmware version: 9.711-5

When I disable and re-enable the lag interface, it tries do get IP by DHCP but fails to receive an offer.

I confirmed the ISP router is providing IP addresses.

The LAG terminates at a WAN switch where the router is connected.

In the logs of SG I see:

<M> fw:/home/login # ifconfig -v eth2
eth2      Link encap:Ethernet HWaddr 00:1A:8C:F0:22:C2
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
          RX packets:31068470 errors:0 dropped:2 overruns:0 frame:0
          TX packets:34109934 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2870126907 (2737.1 Mb) TX bytes:6440355307 (6142.0 Mb)

<M> fw:/home/login # ifconfig -v eth6
eth6      Link encap:Ethernet HWaddr 00:1A:8C:F0:22:C2
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
          RX packets:34802665 errors:0 dropped:1 overruns:0 frame:0
          TX packets:763212 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3043897001 (2902.8 Mb) TX bytes:120283402 (114.7 Mb)

<M> fw:/home/login # ifconfig -v lag3
lag3      Link encap:Ethernet HWaddr 00:1A:8C:F0:22:C3
          UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
          RX packets:4000300544 errors:104 dropped:331275 overruns:0 frame:57
          TX packets:1905373056 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5325821115540 (5079098.8 Mb) TX bytes:286893189767 (273602.6 Mb)

<M> fw:/home/login # /var/mdw/scripts/dhcpc restart
[dhcpc] :: restart - from pid=30031, parent_pid=8658(bash)
:: Stop - interface info missing!!
[dhcpc] :: flock released (parent=8658(bash))
[dhcpc] :: flock aquired (parent=8658(bash))
[dhcpc] :: Start - interface info missing!
[dhcpc] :: flock released (parent=8658(bash))
[ failed ]

dhclient runs:

14811 00:00:00 dhclient

2022:10:18-00:01:52 fw-320-2 [user:notice] ' 
2022:10:18-00:01:57 fw-320-2 [daemon:info] dhcp_updown[32355]:  lag3 - reason:FAIL
2022:10:18-00:02:27 fw-320-2 [user:notice] cluster_sync[31896]:

2022:10:18-13:20:49 fw-320-2 dhclient: DHCPDISCOVER on lag3 to 255.255.255.255 port 67 interval 5
2022:10:18-13:20:54 fw-320-2 dhclient: DHCPDISCOVER on lag3 to 255.255.255.255 port 67 interval 9
2022:10:18-13:21:03 fw-320-2 dhclient: DHCPDISCOVER on lag3 to 255.255.255.255 port 67 interval 7
2022:10:18-13:21:10 fw-320-2 dhclient: No DHCPOFFERS received.
2022:10:18-13:21:10 fw-320-2 dhclient: No working leases in persistent database - sleeping.

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LHerzog over 1 year ago in reply to LHerzog +2 verified

WAN was also fine after the fall back to the original firewall (rebooted it first). So it was some weirdness inside UTM DHCP Client

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0 Vivek Jagad over 1 year ago

Hello LHerzog,

Thank you for reaching out to the community, are the number of errors and drops seen on Lag keeps on increasing ?

Thanks & Regards,
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0 LHerzog over 1 year ago in reply to Vivek Jagad

yes, the drops increase. errors not

I have not taken tcpdump when dhcp discover runs, will do that later.
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0 Vivek Jagad over 1 year ago in reply to LHerzog

Okay, please share once you have collected the tcpdump !!

Thanks & Regards,
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Vivek Jagad | Team Lead, Global Support & Services

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0 LHerzog over 1 year ago in reply to Vivek Jagad

there is no offer. we'll just reboot the machine tonight if there are better ideas.

the issue just started on saturday where no admin did any chance on the infrastructure so it just happened.

<M> fw:/home/login # tcpdump -i lag3 port 67 or port 68
tcpdump: WARNING: lag3: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lag3, link-type EN10MB (Ethernet), capture size 65535 bytes
13:59:25.808005 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
13:59:30.211947 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
13:59:41.035973 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:01:15.620977 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:01:22.234075 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:02:28.023973 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:02:31.203484 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:02:36.047992 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:03:31.784010 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:03:39.175970 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:04:57.212009 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:05:01.119966 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
14:05:11.847972 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:8c:f0:22:c3 (oui Unknown), length 300
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0 Vivek Jagad over 1 year ago in reply to LHerzog

Try restarting the dhcp service from the GUI, system services > Services > DHCP server > STOP > START
But this will indeed impact other DHCP servers configured...
OR You can also toggle on/off the status of the DHCP server from the Network > DHCP

Thanks & Regards,
_______________________________________________________________

Vivek Jagad | Team Lead, Global Support & Services

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0 LHerzog over 1 year ago in reply to Vivek Jagad

but you are mentioning the DHCP server, SG is DHCP client here. Sure I should do that?
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0 Vivek Jagad over 1 year ago in reply to LHerzog

Sorry my bad for the UTM9 it is the following, Network services > DHCP > servers > toggle on/off
OR
from the shell access: /var/mdw/scripts/dhcpd restart

Thanks & Regards,
_______________________________________________________________

Vivek Jagad | Team Lead, Global Support & Services

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0 LHerzog over 1 year ago in reply to Vivek Jagad

I guess it would be dhcpc ? but that failed - can be seen in my first post.

I will restart dhcpd.

<M> fw:/home/login # ps aux | grep dhcp
root     18219 0.0 0.0   5668   748 pts/0    S+   14:44   0:00 grep dhcp
<M> fw:/home/login # cat /var/log/selfmon.log
<M> fw:/home/login # cat /var/mdw-debug.log
cat: /var/mdw-debug.log: No such file or directory
<M> fw:/home/login # version

Current software version...: 9.711005
Hardware type..............: 430r1
Serial number..............: S4000xxxxDF1
Installation image.........: 9.403-4.1
Installation type..........: ssi
Installed pattern version..: 214529
Downloaded pattern version.: 214529
Up2Dates applied...........: 40 (see below)
                             sys-9.403-9.404-4.5.3.tgz (Jul 1 2016)
                             sys-9.404-9.405-5.5.1.tgz (Aug 18 2016)
                             sys-9.405-9.406-5.3.1.tgz (Sep 26 2016)
                             sys-9.406-9.407-3.3.1.tgz (Oct 7 2016)
                             sys-9.407-9.408-3.4.1.tgz (Nov 10 2016)
                             sys-9.408-9.409-4.9.1.tgz (Jan 4 2017)
                             sys-9.409-9.410-9.6.1.tgz (Feb 6 2017)
                             sys-9.410-9.411-6.3.3.tgz (Feb 9 2017)
                             sys-9.411-9.412-3.2.2.tgz (May 30 2017)
                             sys-9.412-9.413-2.4.3.tgz (May 30 2017)
                             sys-9.413-9.414-4.2.3.tgz (Jul 12 2017)
                             sys-9.414-9.501-2.5.1.tgz (Oct 7 2017)
                             sys-9.501-9.502-5.4.1.tgz (Oct 7 2017)
                             sys-9.502-9.503-4.4.2.tgz (Oct 7 2017)
                             sys-9.503-9.504-3.1.4.tgz (Nov 3 2017)
                             sys-9.504-9.505-1.4.1.tgz (Nov 3 2017)
                             sys-9.505-9.506-4.2.2.tgz (Dec 13 2017)
                             sys-9.506-9.507-2.1.4.tgz (Mar 26 2018)
                             sys-9.507-9.508-1.10.1.tgz (Mar 26 2018)
                             sys-9.508-9.509-10.3.2.tgz (Jun 8 2018)
                             sys-9.509-9.510-3.5.2.tgz (Aug 20 2018)
                             sys-9.510-9.600-5.5.1.tgz (Apr 11 2019)
                             sys-9.600-9.601-5.5.2.tgz (Apr 11 2019)
                             sys-9.601-9.602-5.3.1.tgz (Jul 20 2019)
                             sys-9.602-9.603-3.1.1.tgz (Jul 20 2019)
                             sys-9.603-9.604-1.2.1.tgz (Jul 20 2019)
                             sys-9.604-9.605-2.1.4.tgz (Oct 10 2019)
                             sys-9.605-9.700-1.5.2.tgz (Jan 11 2020)
                             sys-9.700-9.701-5.6.1.tgz (Mar 28 2020)
                             sys-9.701-9.702-6.1.1.tgz (Mar 28 2020)
                             sys-9.702-9.703-1.3.3.tgz (Sep 1 2020)
                             sys-9.703-9.704-3.2.3.tgz (Oct 14 2020)
                             sys-9.704-9.705-2.3.1.tgz (Oct 14 2020)
                             sys-9.705-9.706-3.8.1.tgz (May 20 2021)
                             sys-9.706-9.706-8.9.1.tgz (Jul 3 2021)
                             sys-9.706-9.707-9.5.1.tgz (Sep 8 2021)
                             sys-9.707-9.708-5.6.1.tgz (Mar 12 2022)
                             sys-9.708-9.709-6.3.1.tgz (Mar 12 2022)
                             sys-9.709-9.710-3.1.1.tgz (May 19 17:31)
                             sys-9.710-9.711-1.5.1.tgz (May 19 17:32)
Up2Dates available.........: 1
Factory resets.............: 0
Timewarps detected.........: 1

<M> fw:/home/login # rpm -qa | grep dhcp
dhcp-chroot-client-4.4.1-3.g629f991.rb5
dhcp-chroot-server-4.4.1-3.g629f991.rb5
ep-chroot-dhcpc-9.70-14.gde59063.rb5
ep-chroot-dhcps-9.70-15.ge43a374.rb6
<M> fw:/home/login # cat /var/mdw/scripts/dhcpd
#!/bin/bash
#
# Copyright (C) 2005-2010 Astaro AG
# For copyright information look at /doc/astaro-license.txt
# or www.astaro.com/.../astaro-license.txt
#
# Author: Stephan Scholz <sscholz@astaro.com>
# Maintainer: Ulrich Weber <uweber@astaro.com>
#
##############################################################################

PATH=/sbin:/bin:/usr/sbin:/usr/bin
PNAME="DHCP Daemon"
PROG="dhcpd"
NOSELFM="/etc/no-selfmonitor/dhcpd"
CHROOT="/var/chroot-dhcps"

function usage() {
        echo "Usage: $0 [start|stop|restart|trigger]"
        exit 1
}

ret_code=0
case "$1" in
        start)
                echo ":: Starting $PNAME"
                PID=`pidof $PROG`
                if [ ! -z "$PID" ] ; then
                        echo "   $PNAME already running"
                        if [ -e $NOSELFM ] ; then
                                echo "no-selfmonitor file exists so deleting it."
                                rm -f $NOSELFM
                        fi
                        ret_code=1
                else
                        read -a INTERFACES < $CHROOT/etc/dhcpd.ifaces
                        chroot $CHROOT /usr/sbin/__dhcpd -cf /etc/dhcpd.conf ${INTERFACES[@]} >/dev/null 2>&1|| ret_code=1
                        if [ $ret_code = 0 ] ; then #only remove $NOSELFM if start succeeded otherwise selfmon will keep spamming
                                rm -f $NOSELFM
                        fi
                fi
                ;;

        stop)
                echo ":: Stopping $PNAME"
                touch $NOSELFM
                killproc -p /var/chroot-dhcps/var/run/dhcpd.pid /var/chroot-dhcps/usr/sbin/dhcpd || ret_code=1
                num_try=0
                PID=`pidof $PROG`
                while [[ ! -z "$PID" ]] && [[ $num_try -lt 40 ]]
                do
                        echo "   $PNAME still running"
                        sleep 0.25
                        ((num_try++))
                done
                ;;

        restart|trigger)
                [ "$1" = "trigger" ] && [ -e $NOSELFM ] && exit 0
                $0 stop || ret_code=1
                $0 start $@ || ret_code=1
                echo -e "\033[33m\033[1m:: Restarting $PNAME\033[m"
                ;;

        *)
                usage
                ;;
esac

/var/mdw/scripts/retcode $ret_code
exit $ret_code;
<M> fw:/home/login #
<M> fw:/home/login # cat /var/mdw-debug.log
cat: /var/mdw-debug.log: No such file or directory
<M> fw:/home/login # cat /var/mdw/debug.log
cat: /var/mdw/debug.log: No such file or directory
<M> fw:/home/login #

<M> fw-320:/home/login # /var/mdw/scripts/dhcpd restart
:: Stopping DHCP Daemon
[ ok ]
:: Starting DHCP Daemon
[ failed ]
:: Restarting DHCP Daemon
[ failed ]
<M> fw-320:/home/login #
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0 LHerzog over 1 year ago in reply to LHerzog

<M> fw-320:/home/login # /var/mdw/scripts/dhcpd stop
:: Stopping DHCP Daemon
[ ok ]
<M> fw-320:/home/login # /var/mdw/scripts/dhcpd start
:: Starting DHCP Daemon
[ failed ]

<M> fw-320:/home/login # /var/mdw/scripts/dhcpd stop
:: Stopping DHCP Daemon
[ ok ]
<M> fw-320:/home/login # ps aux | grep dhcp
root     28424 0.0 0.0   5668   744 pts/0    S+   14:49   0:00 grep dhcp

<M> fw-320:/home/login # ps aux | grep dhc
root      7395 0.0 0.0   7352   192 ?        Ss   May19   0:03 /usr/sbin/dhcrelay -q -i lag1.500 -i lag1.2500 172.16.xxx.xxx
root     12078 0.0 0.0   7720 2128 ?        Ss   13:55   0:00 /usr/sbin/dhclient -nw -cf /etc/lag3.conf -lf /var/db/lag3.leases -pf /var/run/dhclient_lag3.pid lag3
root     28550 0.0 0.0   5672   744 pts/0    S+   14:49   0:00 grep dhc
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0 LHerzog over 1 year ago in reply to LHerzog

<M> fw-320:/home/login # /var/mdw/scripts/dhcpd stop
:: Stopping DHCP Daemon
[ ok ]
<M> fw-320:/home/login # /var/mdw/scripts/dhcpd start
:: Starting DHCP Daemon
[ failed ]

<M> fw-320:/home/login # /var/mdw/scripts/dhcpd stop
:: Stopping DHCP Daemon
[ ok ]
<M> fw-320:/home/login # ps aux | grep dhcp
root     28424 0.0 0.0   5668   744 pts/0    S+   14:49   0:00 grep dhcp

<M> fw-320:/home/login # ps aux | grep dhc
root      7395 0.0 0.0   7352   192 ?        Ss   May19   0:03 /usr/sbin/dhcrelay -q -i lag1.500 -i lag1.2500 172.16.xxx.xxx
root     12078 0.0 0.0   7720 2128 ?        Ss   13:55   0:00 /usr/sbin/dhclient -nw -cf /etc/lag3.conf -lf /var/db/lag3.leases -pf /var/run/dhclient_lag3.pid lag3
root     28550 0.0 0.0   5672   744 pts/0    S+   14:49   0:00 grep dhc
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0 LHerzog over 1 year ago in reply to LHerzog

did a HA failover - lag3 WAN interface is working again. will fall back to the previous node later and check if the issue is also resolved on that machine.

<M> fw:/home/login # ifconfig lag3
lag3      Link encap:Ethernet HWaddr 00:1A:8C:F0:22:C3
          inet addr:10.1.254.23 Bcast:10.1.254.31 Mask:255.255.255.240
          UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
          RX packets:1189715296 errors:0 dropped:615 overruns:0 frame:0
          TX packets:570845987 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1567178041026 (1494577.4 Mb) TX bytes:75816317166 (72304.0 Mb)
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+1 LHerzog over 1 year ago in reply to LHerzog

WAN was also fine after the fall back to the original firewall (rebooted it first).

So it was some weirdness inside UTM DHCP Client
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