@george1421

That appears to have resolved it! Thanks!

I tried grouping them all and then starting the task, but same result.
https://community.spiceworks.com/topic/261521-multicasting-in-fog-how-to-do-it

Hello,

I have a 21 computer Multicast session. All PCs are joined to the session fine, but they are all sitting on the Partclone blue/gray screen saying:
“Starting to restore image (-) to device (/dev/sda1) note: Storage Location 10.80.50.7:/images/, Image Name Net225-226-Windows10Pro”

The FOG server is on a separate VLAN - 10.80.50.0/24 and the workstations are on 10.80.128.0/24.
Two Cisco switches. There should be not known filtering or blocking of multicast traffic, unless I need to change something on the switches. I can provide the switch config if needed.

@george1421

That appears to have resolved it! Thanks!

@george1421

Thanks! I’ll try that shortly, but I won’t be able to test PXE boot again until Wednesday.

@george1421 said in Intermittent PXE-E32: TFTP Open Timeout:

@sebastian-roth Ah I see it.

The OP needs to set the second switch up as an L2 switch and not an L3 switch (with router). Do this for both vlans on that switch. Make sure the links between the switches are setup as vlan trunks where the links are members of the vlans you want to cross the switch to switch link.

You in a way have one vlan with two routers on it. Because the dhcp server is not on the same subnet as the target computers you have the dhcp helper service running on both routers. They are now duplicating the dhcp requests to the dhcp servers (because both are hearing the dhcp discover packet).

And that’s the other confusing part. I’m no Cisco expert, but I don’t see where I have any routing enabled on SW2. So I’m not sure why PXE or TFTP is picking up SW2 as a gateway also, when it’s not conifguredin DHCP anywhere.

Here are my switch configs for review and if someone could help point that out.

SW1

version 12.2
no service pad
no service timestamps debug uptime
service timestamps log datetime
service password-encryption
service sequence-numbers
!
hostname SW1
!
boot-start-marker
boot-end-marker
!
(removed enable passwords)
!
!
!
aaa new-model
!
!
aaa authentication login default local none
aaa authentication login ssh local
!
!
!
aaa session-id common
clock timezone UTC -5
system mtu routing 1500
ip routing
no ip domain-lookup
ip domain-name (removed domain name)
ip name-server 10.80.50.6
ip name-server 10.80.50.8
ip name-server 8.8.8.8
!
!
!
!
(removed Crypto config)
!
!
!
spanning-tree mode pvst
spanning-tree portfast default
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
ip ssh time-out 90
ip ssh authentication-retries 2
ip ssh version 2
!
!
interface Port-channel5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
!
interface GigabitEthernet0/1
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/2
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/3
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/4
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/5
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/6
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/7
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/8
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/9
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/10
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/11
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/12
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/13
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/14
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/15
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/16
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/17
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/18
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/19
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/20
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/21
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/22
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/23
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/24
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/25
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/26
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/27
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/28
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/29
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree portfast
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/30
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/31
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/32
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/33
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/34
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/35
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/36
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/37
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/38
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/39
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/40
 switchport access vlan 128
 switchport mode access
 switchport nonegotiate
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/41
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/42
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/43
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/44
 switchport access vlan 128
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/45
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/46
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/47
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/48
 switchport access vlan 128
 switchport mode access
 no keepalive
 storm-control broadcast level 50.00
 spanning-tree bpduguard enable
!
interface GigabitEthernet0/49
 no switchport
 ip address 10.80.75.2 255.255.255.0
!
interface GigabitEthernet0/50
 description SERVER VLAN
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 224
 switchport trunk allowed vlan 99,224
 switchport mode trunk
!
interface GigabitEthernet0/51
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
 channel-group 5 mode desirable
!
interface GigabitEthernet0/52
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
 channel-group 5 mode desirable
!
interface Vlan1
 ip address 10.80.1.1 255.255.255.0
 ip access-group 110 in
!
interface Vlan50
 description SERVER VLAN
 ip address 10.80.50.1 255.255.255.0
!
interface Vlan128
 description WORKSTATION VLAN
 ip address 10.80.128.1 255.255.255.0
 ip helper-address 10.80.50.6
 ip helper-address 10.80.50.8
!
!
router eigrp 3
 network 10.80.1.0 0.0.0.255
 network 10.80.50.0 0.0.0.255
 network 10.80.75.0 0.0.0.255
 network 10.80.128.0 0.0.0.255
 passive-interface Vlan50
 passive-interface Vlan128
 eigrp stub connected summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.80.75.1
no ip http server
ip http secure-server
!
kron occurrence tftpbackup at 18:00 Mon recurring
 policy-list tftpbackup
!
access-list 115 permit ip 10.80.50.0 0.0.0.255 any
access-list 115 remark -=[Restrict SSH access]=-
no cdp run

vstack

alias configure dsr do show run
alias exec sr show run
!
line con 0
 exec-timeout 90 0
 password (removed)
 logging synchronous
line vty 0 4
 access-class 115 in
 exec-timeout 90 0
 password (removed)
 logging synchronous
 length 0
 transport input telnet
line vty 5 15
 exec-timeout 0 0
 password (removed)
 no exec
 transport input telnet
!
ntp clock-period 36029217
ntp server 193.136.152.72
end

SW2

version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname SW2
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$fBsL$ob49EQzhePJwm8UzpG1CU0
!
!
!
no aaa new-model
system mtu routing 1500
ip domain-name (removed)
ip name-server 10.80.50.6
ip name-server 10.80.50.8
ip name-server 8.8.8.8
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
ip ssh version 2
!
!
interface Port-channel5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
!
interface GigabitEthernet0/1
 switchport access vlan 50
!
interface GigabitEthernet0/2
 switchport access vlan 50
!
interface GigabitEthernet0/3
 switchport access vlan 50
!
interface GigabitEthernet0/4
 switchport access vlan 50
!
interface GigabitEthernet0/5
 switchport access vlan 50
!
interface GigabitEthernet0/6
 switchport access vlan 50
!
interface GigabitEthernet0/7
 switchport access vlan 50
!
interface GigabitEthernet0/8
 switchport access vlan 50
!
interface GigabitEthernet0/9
 switchport access vlan 50
!
interface GigabitEthernet0/10
 switchport access vlan 50
!
interface GigabitEthernet0/11
 switchport access vlan 50
!
interface GigabitEthernet0/12
 switchport access vlan 50
!
interface GigabitEthernet0/13
 switchport access vlan 50
!
interface GigabitEthernet0/14
 switchport access vlan 50
!
interface GigabitEthernet0/15
 switchport access vlan 50
!
interface GigabitEthernet0/16
 switchport access vlan 50
!
interface GigabitEthernet0/17
 switchport access vlan 50
!
interface GigabitEthernet0/18
 switchport access vlan 50
!
interface GigabitEthernet0/19
 switchport access vlan 50
!
interface GigabitEthernet0/20
 switchport access vlan 50
!
interface GigabitEthernet0/21
 switchport access vlan 50
!
interface GigabitEthernet0/22
 switchport access vlan 50
!
interface GigabitEthernet0/23
 switchport access vlan 50
!
interface GigabitEthernet0/24
 switchport access vlan 50
!
interface GigabitEthernet0/25
 switchport access vlan 50
!
interface GigabitEthernet0/26
 switchport access vlan 50
!
interface GigabitEthernet0/27
 switchport access vlan 50
!
interface GigabitEthernet0/28
 switchport access vlan 50
!
interface GigabitEthernet0/29
 switchport access vlan 50
!
interface GigabitEthernet0/30
 switchport access vlan 50
!
interface GigabitEthernet0/31
 switchport access vlan 50
!
interface GigabitEthernet0/32
 switchport access vlan 50
!
interface GigabitEthernet0/33
 switchport access vlan 50
!
interface GigabitEthernet0/34
 switchport access vlan 50
!
interface GigabitEthernet0/35
 switchport access vlan 50
!
interface GigabitEthernet0/36
 switchport access vlan 50
!
interface GigabitEthernet0/37
 switchport access vlan 50
!
interface GigabitEthernet0/38
 switchport access vlan 50
!
interface GigabitEthernet0/39
 switchport access vlan 50
!
interface GigabitEthernet0/40
 switchport access vlan 50
!
interface GigabitEthernet0/41
 switchport access vlan 50
!
interface GigabitEthernet0/42
 switchport access vlan 50
!
interface GigabitEthernet0/43
 switchport access vlan 50
!
interface GigabitEthernet0/44
 switchport access vlan 50
!
interface GigabitEthernet0/45
 switchport access vlan 50
!
interface GigabitEthernet0/46
 switchport access vlan 50
 switchport mode access
!
interface GigabitEthernet0/47
 switchport access vlan 50
!
interface GigabitEthernet0/48
 switchport access vlan 50
 switchport mode access
!
interface GigabitEthernet0/49
 switchport access vlan 50
!
interface GigabitEthernet0/50
 switchport access vlan 50
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
!
interface GigabitEthernet0/51
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
 channel-group 5 mode auto
!
interface GigabitEthernet0/52
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 50,128
 switchport mode trunk
 channel-group 5 mode auto
!
interface Vlan1
 ip address 10.80.1.2 255.255.255.0
!
interface Vlan50
 ip address 10.80.50.2 255.255.255.0
!
interface Vlan128
 ip address 10.80.128.2 255.255.255.0
 ip helper-address 10.80.50.6
 ip helper-address 10.80.50.8
!
ip classless
ip http server
ip http secure-server
!
!
vstack
!
(console and VTY configs removed)
!
end

Here is DC1 DHCP config:

Here is DC2 DHCP config:

Both are setup in a DHCP failover config, so the config is (and should stay) the same on both.

@sebastian-roth
Check out these two pics. You will see where it shows two gateways for some reason.
https://photos.app.goo.gl/SKANVs1URjYxYvY78

As for SW2, it was started with a blank, fresh config and there’s no DHCP server running. I have the appropriate IP helper-address commands setup for the two DHCP/DNS servers.

I’ll also add that I don’t have any issues with DNS or DHCP that I can find.

SW1:
interface Vlan50
description SERVER VLAN
ip address 10.80.50.1 255.255.255.0
!
interface Vlan128
description WORKSTATION VLAN
ip address 10.80.128.1 255.255.255.0
ip helper-address 10.80.50.6
ip helper-address 10.80.50.8

SW2:
interface Vlan50
ip address 10.80.50.2 255.255.255.0
!
interface Vlan128
ip address 10.80.128.2 255.255.255.0
ip helper-address 10.80.50.6
ip helper-address 10.80.50.8

I have a confusing issue.
Classroom with 24 workstations at my local school.

Here’s my setup:
Two Cisco Catalyst 3560G switches.

• SW1 - gateway switch. VLAN 128 - Workstations.
• SW2 - VLAN 50 - servers.

Server3 - Windows Server 2016 with Hyper V running two VMs:

• DC1 - 10.80.50.8 - Windows Server 2016 Running AD, DNS, DHCP
• FOG - Running FOG 1.59 on latest release of Debian.

Server1 - Windows Server 2016 with Hyper V running one VM:

• DC2 - 10.80.50.6 - Windows Server 2016 Running AD, DNS, DHCP

Most recent change was I added in SW2, which is connected to SW1 via Etherchannel (two gigabit connections). Switches are both running STP.
It is not Etherchannel because I had this issue prior to setting up Etherchannel - when the switches were connected via single gigabit uplink.
Both switches have VLAN 50 and 128.

The issue is that sometimes I boot two test workstations, they will ALWAYS get a DHCP IP from either DHCP server, but TFTP times out. Other times, TFTP works and it boots to the FOG menu. It’s very intermittent.

The thing that confuses me, is that when DHCP hands off an IP to a PXE client, it shows an additional gateway of 10.80.128.2 - which is the IP address of SW2 VLAN 128. None of my DHCP settings on my servers have this IP setup as a gateway.

I have tried unauthorizing one DHCP server at a time and it didn’t seem to make a difference.

Options 66 and 67 are configured and have been working perfectly, 100% of the time up until adding the second switch.

Any thoughts on what I can try?