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DHCP not traversing switch Part 2
Hi, Unfortunatly I have a follow up issue to my last issue here. This time however only the Netgear is involved. I have performed various tests already and it boild down to that the S3300 does n...
Hey,
I missed a line in the config. You have DHCP snooping turned on it seems. Can we turn that off?
System > Services > Global Configuration > Turn it off
Cheers
As far as I have checked, there is no issue about DHCP traffic not able to pass on the S3300 switch models either set as stack or standalone as per described in your post. Let us isolate the problem. Kindly answer the questions below:
a. If you are going to unstack the S3300 switches, is the DHCP traffic working fine on both S3300 switches when set as standalone switches?
b. Are you using virtual machines as the DHCP server and DHCP client? If yes, kindly try to test using an actual PC or router as the DHCP server and a PC as the DHCP client on the S3300 switches set either as a stack and as standalone switches.
c. Since you have upgraded the firmware of both S3300 switches to the latest v6.6.4.7, were you able to perform a factory reset on both S3300 switches then reconfigure it from scratch? It is best to perform a factory reset after upgrading the firmware then reconfigure the settings from scratch to start clean using the firmware. Then, check if DHCP traffic is able to pass to the S3300 switches either it is configured as a stack or as standalone switches.
Regards,
DaneA
NETGEAR Community Team
Hi DaneA,
thanks for replying.
Those switches are currently as 'productive' as they can be in a SOHO environment, so I have significant problems following the debugging steps you suggested :/, i.e. both unstacking and reverting to factory results will require significant effort to implement so if we can prevent that at all I'd much appreciate it.
I have since posting tried another reboot of the stack but that did not help.
Re b:
I have tried with both virtual and physical server and both as client to rule out issues on ESX side.
Also as I said I think this issue started while still on the old firmware (which has been in place for a while) and I am sure it has been working fine previously.
Thanks,
regards,
Thomas
Hi rand__
This should work fine. As DaneA mentioned there are no known DHCP issues on the S3300 switches. However, I will give you that your problem sounds strange indeed!
Is there any chance that you can attach the config to the thread here? I would like to have a look at it. Remove any passwords, before attaching it.
Cheers!
Hi,
sure here you go
Thanks:)
Unfortunatly could'nt attach as txt.
0x4e470x010x00S3300 6.6.4.7 0x000000000x00000000000000 ! The line above is the NSDP Text Configuration header. DO NOT EDIT THIS HEADER !Current Configuration: ! !System Description "S3300-28X-PoE+ ProSAFE 24-Port Gigabit Stackable Smart Switch with PoE+ and 4 10G uplinks" !System Software Version "6.6.4.7" !System Up Time "2 days 20 hrs 50 mins 4 secs" !Additional Packages QOS,IPv6 Management,Stacking,Routing !Current SNTP Synchronized Time: Nov 7 11:35:49 2017 UTC ! network protocol none network parms 192.168.35.248 255.255.252.0 192.168.34.1 boot auto-copy-sw vlan database vlan 2,4-10,18-19 vlan name 2 "removed" vlan name 4 "removed" vlan name 5 "removed" vlan name 6 "removed" vlan name 7 "removed" vlan name 8 "removed" vlan name 9 "removed" vlan name 10 "removed" vlan name 18 "removed" vlan name 19 "removed" exit configure sntp client mode unicast sntp server "192.168.34.2" sntp server "192.168.34.1" clock summer-time recurring EU offset 60 zone "CET" stack member 1 2 member 2 2 exit no ip domain lookup slot 1/0 2 set slot power 1/0 no set slot disable 1/0 slot 2/0 2 set slot power 2/0 no set slot disable 2/0 username "admin" password removed level 15 encrypted green-mode eee green-mode energy-detect line console serial timeout 0 exit line telnet exit spanning-tree mst priority 0 0 snmp-server sysname "S3300Stack" ! snmp-server community "removed" snmp-server community ipaddr 192.168.34.0 removed snmp-server community ipmask 255.255.252.0 removed no set igmp header-validation ip dhcp snooping vlan 1 no ip dhcp snooping verify mac-address no ipv6 dhcp snooping verify mac-address classofservice trust untrusted interface 1/g1 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g2 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 2000000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g3 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g4 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g5 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g6 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g7 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g8 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g9 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g10 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g11 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g12 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g13 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g14 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g15 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g16 spanning-tree bpduflood spanning-tree mst 0 cost 200000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g17 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g18 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g19 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g20 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 1/g21 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 1/g22 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 2000000 dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 1/g23 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 1/g24 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 1/xg25 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 vlan tagging 1 green-mode eee lldp notification exit interface 1/xg26 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 vlan participation include 5-10,18-19 vlan tagging 1,5-10,18-19 green-mode eee lldp notification exit interface 1/xg27 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 2000 dhcp l2relay dhcp l2relay trust mtu 9198 vlan participation include 5-10,18-19 vlan tagging 1,5-10,18-19 lldp notification exit interface 1/xg28 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 lldp notification exit interface 2/g1 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g2 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g3 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 2/g4 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 200000 dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 2/g5 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g6 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g7 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g8 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g9 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 2/g10 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g11 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g12 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect lldp notification exit interface 2/g13 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g14 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g15 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g16 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g17 spanning-tree bpduflood spanning-tree mst 0 cost 2000000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g18 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g19 spanning-tree bpduflood spanning-tree mst 0 cost 2000000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g20 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g21 spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g22 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust green-mode energy-detect green-mode eee lldp notification exit interface 2/g23 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust vlan pvid 2 vlan participation auto 1 vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 2/g24 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 20000 dhcp l2relay dhcp l2relay trust vlan participation include 2 green-mode energy-detect green-mode eee lldp notification exit interface 2/xg25 description 'removed' spanning-tree bpduflood spanning-tree mst 0 cost 200000 dhcp l2relay dhcp l2relay trust mtu 9198 vlan ingressfilter vlan participation include 5-10,18-19 vlan tagging 5-10,18-19 green-mode eee lldp notification exit interface 2/xg26 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 vlan tagging 1 green-mode eee lldp notification exit interface 2/xg27 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 vlan ingressfilter vlan participation include 5-10,18-19 vlan tagging 5-10,18-19 lldp notification exit interface 2/xg28 description 'removed' spanning-tree bpduflood dhcp l2relay dhcp l2relay trust mtu 9198 vlan ingressfilter vlan participation include 5-10,18-19 vlan tagging 5-10,18-19 lldp notification exit interface lag 1 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 2 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 3 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 4 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 5 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 6 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 7 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 8 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 9 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 10 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 11 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 12 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 13 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 14 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 15 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 16 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 17 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 18 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 19 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 20 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 21 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 22 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 23 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 24 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 25 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit interface lag 26 spanning-tree bpduflood dhcp l2relay dhcp l2relay trust exit no scc mode exit
Hi again,
I can see that you are using L2 DHCP relay. Any reason for this? I very much suspect that this could be the issue. Can you please try and turn it off: System > Services > DHCP L2 Relay > Disable the "Admin Mode" and click Apply.
Also, turn it off at least on port 12 and 13, where box A and B are connected.
System > Services > DHCP L2 Relay > DHCP L2 Relay Interface Configuration
Cheers
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