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kovacspro
newbie
Topic Author
Posts: 26
Joined: Wed Jun 14, 2023 8:57 pm

BUG - unable to access management from VLAN with DHCP snooping set (CRS328-24P-4S+RM)

Tue Mar 11, 2025 5:41 pm

I have a CRS328-24P-4S+ with SwOS 2.17 (latest)
I configured with VLANs as usual on my other CSS switches. I use a VLAN for management purposes, so I set this VLAN ID to 'Allow from VLAN'.
Everything worked fine till I configured the DHCP snooping on UPLINK trunk ports. These ports are used for management also.
After I set the DCHP snooping, connection lost with the switch and not able to access on ports which ticked to "trusted" in DHCP snooping section. Enable/disable add Option 82 setting is not affecting.

Seems this is another annoying SwOS bug with DHCP snooping. The community have been struggling for years witch DHCP snooping bugs in SwOS. LAG on VLAN trunk with DHCP snooping etc..
 
peppercorn27
just joined
Posts: 2
Joined: Mon Mar 03, 2025 4:53 pm

Re: BUG - unable to access management from VLAN with DHCP snooping set (CRS328-24P-4S+RM)

Sun Mar 16, 2025 9:10 pm

I reported a similar issue here -
viewtopic.php?t=215260