DrayTek UK Users' Community Forum

Help, Advice and Solutions from DrayTek Users

2820n 3.3.4 DHCP bug?

  • benji
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
30 Jun 2010 23:08 #1 by benji
2820n 3.3.4 DHCP bug? was created by benji
Hi

Anyone got a similar setup or seen a similar issue on 3.3.4?

DHCP scope starts at x.x.x.10 on LAN

IP bound to MAC for x.x.x.10

DHCP fails for x.x.x.10 client unless DHCP scope is set to start x.x.x.9

3.3.3 works fine.

Please Log in or Create an account to join the conversation.

More
01 Jul 2010 10:29 #2 by howard simpson
Replied by howard simpson on topic 2820n 3.3.4 DHCP bug?
I have exactly that setup with 3.3.4 the NAS BOX is on xx.xx.xx.10 and DHCP starts at xx.xx.xx.10. It seems to be working, though I must admit that I have had some problems getting my new laptop to see the NAS box, its a bit erratic. I changed to 3.3.4 at the same time as I got the new laptop, my initial thinking was it was the laptop but now I am not so sure!
What symptoms are you seeing i.e. no entry in the DHCP table?

Howard

Please Log in or Create an account to join the conversation.

  • benji
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
01 Jul 2010 10:34 #3 by benji
Replied by benji on topic 2820n 3.3.4 DHCP bug?
Yes, it just didnt want to give the IP out as it normally does. Tried disabling the client NIC etc but nothing going on. Didnt think to try Wireshark at the time though which might have helped shed some light.

I just flicked the client WLAN card on and used that for a while, then changed the DHCP scope on the Draytek and pretty much instantly got the x.x.x.10 address on the wired LAN card.

Please Log in or Create an account to join the conversation.

More
01 Jul 2010 14:47 #4 by howard simpson
Replied by howard simpson on topic 2820n 3.3.4 DHCP bug?
Was it that the DHCP table showed the IP but the card was not actually recieving it?

Howard

Please Log in or Create an account to join the conversation.

  • benji
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
01 Jul 2010 14:49 #5 by benji
Replied by benji on topic 2820n 3.3.4 DHCP bug?
Cant be 100% certain but think it was in the list with "FIXED IP" next to it, so you might be right.

Please Log in or Create an account to join the conversation.

  • benji
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
01 Jul 2010 22:32 #6 by benji
Replied by benji on topic 2820n 3.3.4 DHCP bug?
Well its done it again, the IP wasnt in the DHCP list though. Strangely the computer name was listed next to two unrelated/unused IPs.

I had to reboot the router for something else and it fixed it.

Seems like a DHCP bug in there somewhere though. Will have to go back to 3.3.3 if I cant figure it out soon!

Please Log in or Create an account to join the conversation.

Moderators: ChrisSami