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About MattTaylorTas
MattTaylorTas
Comes here often
Member since Aug 2, 2023
Aug 7 2023
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Aug 3 2023
8:08 PM
OK! So I think I have this sorted! Being a VLAN for our BYOD devices (we are a school) I had some ACL rules in place to keep the filthy byod devices to themselves, with some basic allows to let DHCP, DNS, paper cut printing and the like through, then an overarching deny to block 10.10.18.0/24 from accessing the rest of our internal network being 10.0.0.0/8. Turns out, windows clients can pull an IP from 10.10.18.1 while this rule is in place, where others can not. If I split the rule into separate rules, denying each of our internal vlans Deny 10.10.18.0/24 -> 10.10.10.0/24 Deny 10.10.18.0/24 -> 10.10.11.0/24 Deny 10.10.18.0/24 -> 10.10.12.0/24 ect ect and then remove the overall deny rule , all clients can pull an IP.. so odd!
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Aug 2 2023
7:28 PM
soooo futher testing no confirms - Any client connecting on this VLAN that is not Windows (OSX, iOS, Android) either on LAN or WLAN will not pick up an IP, wait for it... ONLY when connected to an edge switch. - When connected directly to the core, either on LAN or via AP connected directly to Core (where the DHCP scope sits) we get an IP ok regardless of OS.
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Aug 2 2023
5:30 PM
It looks to be only macbooks with the issue, my IOS connected ok, as do windows (I don't have an android handy to test). The switch that the APs hang off was replaced of late, with the base setup created with a clone of an existing switch. All of our BYOD devices serve from the same DHCP pool, I can see 70ish % free so not running out of address. Interestingly, I just added a LAN device to test, and it didn't pull and address. All of my uplink ports are untagged on management and all other vlans allowed.
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Aug 2 2023
5:05 PM
Thank Ryan, I have a support case open as well as this thread. Non macs are spot on, I can see 8 clients on that vlan active on the troublesome AP right now. It was the switch that these APs hang off that was replaced during out last student term break.
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Aug 2 2023
4:53 PM
Hi all, I have a set of clients (specifically macbooks) that are struggling to pick up a DHCP addresses when connecting via access points hanging off just one of our switches (which was new in the last few weeks). When they are in other parts of the network there is no issue connecting and picking up a DHCP address. This DCHP range is served by the Core Meraki stack, so the request never leaves the mearki environment. I have checked - Scope, plenty of room, and it functions on 70% of the network ok - Uplink ports, all uplink ports are trunk ports will all vlans allowed - Device's have an active lease of note: - This is the only DHCP range that is served by the Mearki devices, others relay to our AD servers (no idea why, this setup preceeded me) - The switch was replaced in the last few weeks, however same firmware version as others in use Any tips?
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