DHCP server icx 7750

Question

After upgrading icx 7750 from 08.0.40 to 08.0.80 My multiple DHCP servers is malfunctioning. A PC can get a lease, but a iPhone or IP phone cannot get a lease. What can be wrong?

hashim_bharoocha · Answer

Hi Fleming,So PC ONLY works and  sounds like  you have dedicated  DHCP  Dedicated servers? Is that assumption is correct?The more details the better for me to understand the issue.If you compare the old configs from 8040 are they the same as new 8080 configs?

jardel_almeida_dtyr3ot5x3j32 · Answer

Hi,What does not work?Do devices not get IP? Run a wireshark to identify what is impacting the problem, or see the VLWN / WLAN / ICX settings.Share your configuration here to verify.

martin_martin_6778240 · Answer

I presume the PC is directly connected and the iphone via an access point.Is the accesspoint working ? can you access it via the controller?regardsMartin

flemming_hansen_3hmnsp32pxty3 · Answer

Hi Thanks for your reply.

The iPhones are connected via WiFi, and the IP phones are hardwired. They will not optain an IP address. PC's get an IP address, via WiFi and hardwired.
I got a guest network on another VLAN, which has a DHCP server on a Palo Alto firewall, and the iPhone can get an IP from there.

I will find the configs.

regards
Flemming

justin_birkhofer · Answer

Are they within a different VLAN?If yes, did you not save before the reload and perhaps loose some configuration settings such as the ip helper addresses?

jijo_panangat · Answer

You may run a wire shark on the server/client and check if the iPhone gets an dhcp-offer from server, At least we will know in which phase it is failing in the DORA process.

Please open a tac case as this requires a troubleshooting session to isolate the problem.

flemming_hansen_3hmnsp32pxty3

DHCP server icx 7750

Responses

hashim_bharoocha

jardel_almeida_dtyr3ot5x3j32

electa_smith

electa_smith

martin_martin_6778240

flemming_hansen_3hmnsp32pxty3

justin_birkhofer

jijo_panangat

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