I just looked over the release notes for 1.2.15, 1.2.17, and 1.2.18.  I'm not seeing anything related to the DHCP issues you're having.  At this point, I'd recommend one of two courses of action. Factory reset the device - The thought behind this is that the original image install may have had a bug that would be corrected on a factory reset. Contacting Small Business Support (www.cisco.com/go/sbsc).  They will have tools they can use to better troubleshoot the issue and possibly remedy it. I'm sorry I couldn't assist you further. Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

I'm not suggesting that there is an issue with the WAP.  I'm suggesting a possible intermittent connectivity issue between the ISA and WAP.  Connecting the WAP to a different port on the ISA would suggest a possible flaky port on the ISA.  Additionally, a duplex mismatch could be caused by either the WAP or ISA, if that turned out to be the issue.  Obviously the cable run at 125' is not an issue. Another question I have is have you determined whether the AP integrated into the ISA also stops handing out DHCP at the same time the WAP does?  Again, not suggesting it's a WAP issue, just trying to narrow down where the issue is.  Additionally, have you seen any errors in the ISA logs related to DHCP? Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

Michael, Couple of "stabs in the dark".  Have you tried changing the port that the WAP is plugged into to a different port on the ISA to see if that helps?  As well, have you tried forcing the Speed and Duplex on the port the the WAP is plugged into to 100M/Full or Half as there might be an occassional duples mismatch issue as well? One other question.  How far is the cable run between the ISA and the WAP?  If it's over 300' (100M), you will have occasional issues with connectivity. http://en.wikipedia.org/wiki/Category_5_cable Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

Michael, I'm sorry. I'm confused. I don't understand what you meant by your last post. Please elaborate. Sent from Cisco Technical Support iPhone App ... View more

Is it possible to run one or more devices physically connected to see if the issue only applies to the wireless or both? Sent from Cisco Technical Support iPhone App ... View more

Michael, I will admit that I'm a little confused on why the Internet connections are in the 3560 instead of running dual mode on the ISA and terminating them on it. But that's not the issue you raised. So is the WAP and ISA both handing out DHCP and they both start failing and fixed with a reboot or is the ISA doing all the DHCP? Sent from Cisco Technical Support iPhone App ... View more

Anthony, Everything still running good? Can we consider this issue closed and mark a correct answer if so? Sent from Cisco Technical Support iPhone App ... View more

Please see this similar post where the issue ended up being the switch. https://supportforums.cisco.com/thread/2249429 As well, what do you mean that no physical connected clients? Also you mentioned a 3560 with dual Internet connections. Are the Internet connections terminated in the ISA or the 3560? Sent from Cisco Technical Support iPhone App ... View more

Is the issue with all XP systems or just 1? Sent from Cisco Technical Support iPhone App ... View more

Ahmed, I would recommend moving your post to the forum Networking Infrastructure -> LAN, Switching and Routing or to the forum Networking Infrastructure -> Network Management as one of those would be better suited to your request and product.  This forum is targeted at Small Business products and solutions and the 4500 series chassis wouldn't fall into that realm.  You would probably receive better and more timely answers in one of those forums. Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

To clarify, would you please attach screenshots of the VPN configuration, ACL Rules, and Address Management (if applicable)? Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

Correct, which is how it should be.  I just realized that my statement regarding you previously mentioning allowing Any Any was incorrect.  I got confused with another thread I was working on where someone else had stated it was setup Any Any.  Ultimately if you setup the VPN following the help information then all of your configuration is most likely correct. As you did previously state, the VPN came up, the phones and PCs are on the same network at each location, the PCs work fine, the phones at Site A work fine and the phones at Site B do not.  The most likely issue is the DHCP settings.  Once you see what Options are configured on the DHCP Server at Site A, then you'll know what to put into the DHCP scope of the ISA 550 at Site B.  To be perfectly candid, it will most likely be Option 66 and/or Option 150 and will contain the IP Address of the PBX server.  Once you get the information, go to Networking -> VLAN and Edit the appropriate VLAN.  Then select the DHCP Pool Settings tab, scroll to the bottom, and enter the appropriate information using the 3 applicable options boxes listed.  Save the config, reboot the phones so they get updated DHCP info, and you'll probably be up and running. Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more

Sorry, I meant to respond to your question on tweaking the VPN.  If you're allowing Any Any, as you previously stated, then the VPN shouldn't be causing you any issues. Shawn Eftink CCNA/CCDA Please rate all helpful posts and mark correct answers to assist others searching for solutions in the community. ... View more