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- About MartynB
MartynB
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Member since May 13, 2022
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Monday
Hi Guys, I've managed to put some time aside for this, and to answer some of the questions above, there is no Layer 3 happening on this network currently everything is on default VLAN 1, the Local LAN rule is set to allow, the client gets a valid address but can't ping the gateway, let alone the internet, and there are numerous other AP's with the same config on the same firmware functioning in other businesses under the same corporate ownership. The following packet capture shows the DHCP exchange from the server at x.x.x.2: --- Start Of Stream --- reading from file /tmp/click_pcap_dump, link-type EN10MB (Ethernet), snapshot length 9600 14:06:47.108066 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:06:48.607392 ARP, Request who-has x.x.x.87 tell x.x.x.2, length 46 14:06:50.094866 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 313 14:06:50.121799 ARP, Request who-has x.x.x.2 tell x.x.x.222, length 46 14:06:50.122399 ARP, Reply x.x.x.2 is-at xx:xx:xx:xx:xx:xx, length 46 14:06:50.923239 ARP, Request who-has x.x.x.196 tell x.x.x.2, length 46 14:06:58.177514 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:06:58.180722 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:06:58.181458 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:07:01.092245 ARP, Request who-has x.x.x.218 tell x.x.x.2, length 46 14:07:02.023750 ARP, Request who-has x.x.x.205 tell x.x.x.2, length 46 14:07:02.625115 ARP, Request who-has x.x.x.2 tell x.x.x.187, length 46 14:07:02.641458 ARP, Request who-has x.x.x.208 tell x.x.x.2, length 46 14:07:02.643704 ARP, Request who-has x.x.x.187 tell x.x.x.2, length 46 14:07:02.908839 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:07:06.860131 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 313 14:07:06.886681 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:07:08.944501 IP x.x.x.2.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 307 14:07:09.637136 ARP, Request who-has x.x.x.98 tell x.x.x.2, length 46 14:07:12.352409 ARP, Request who-has x.x.x.125 tell x.x.x.2, length 46 14:07:12.364550 ARP, Request who-has x.x.x.128 tell x.x.x.2, length 46 14:07:15.237527 ARP, Request who-has x.x.x.2 (xx:xx:xx:xx:xx:xx) tell x.x.x.222, length 46 14:07:15.238167 ARP, Reply x.x.x.2 is-at xx:xx:xx:xx:xx:xx, length 46 --- End Of Stream --- Any thoughts!? Thanks in advance....
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a week ago
Thanks for the suggestions guys, I'm out of office this week until Friday, so will pick up with your ideas and report back then
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2 weeks ago
Hi, I've researched this issue and so far haven't found a similar case, so I've signed up to ask for some advice I have an MR36 running 27.7.1 connected to an MS250-48LP running in test as a PoC for a network wide roll out I have a Guest SSID distibuting it's own DHCP, and a Production SSID configured to use the local LAN DHCP server. In the production SSID, I'm getting the DHCP error in the subject, however, clients are getting a valid IP address from the server, with the correct gateway etc, and a lease visible in the DHCP lease list on the Windows server. However the client claims there is no internet access The MS250 is currently configured to block rogue DHCP servers but specifically allow the DHCP server in question, it's worth noting that client devices connected to the switch via copper are getting addresses and connecting out without issue, there is no L3 configured on this network Any suggestions of where to look would be a great help, thanks in advance
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