OS 10 Server DHCP with Dell Switches

We have a strange DHCP assignment lag that shows-up by machines taking a long time to get an IP address, sometimes as long as 20 seconds. As you can imagine, this causes all sorts of problems.
When we bypass our Dell Switch (PowerConnect 6248) the problem disappears.
We are running 10.5.8 on the latest Intel Xserve.

Thanks to both of you, faulty switch has not even crossed my mind, but I will be call dell tech support today.
I did check the Dell forums, most everyone has difficulty passing DHCP between their VLANs. We have the most basic set-up with a single LAG configured.
I'll see what Dell support has to say. I was hoping others were using OSX servers with Dell switches and maybe seeing this too.
I fear calling Dell and telling them that we are using Apple equipment, I tire of support people either not knowing about Apple technology or stating that it's simply not supported. I am sure we all deal with the anti-Apple bias and you know what I mean.

Similar Messages

Set up cisco SGE2010 combined with Dell 6248 switch

Hi, I have currently a Dell powerconnect 6248 switch combined with a netgear UTM router. I have a basic understanding on how things should work but I don't have the knowledge to apply it as I'm new to setting up vlan and the person before me did the basic configuration like this:
defined 5 VLAN in the netgear router
defined the same 5 VLAN in the dell 6248
connected the dell switch to the netgear router via a trunk port.
Right now all the inter vlan traffic pass thru the netgear router as the dell switch as a trunk port connected to the netgear box who then give dhcp and set himself as the default inter vlan route. I would like to stop that since I would like the cisco switch to handle all the vlan routing for both switch and those switch to send their dhcp request to my win2k8 server.
I did set the sge2010 in layer 3 mode from the small business telnet interface. I then setup the same 5 vlan in the cisco switch.
If I understand this well I need to define an IP address for each vlan interface on the cisco switch for it to be able to route things, I have set them all as x.x.x.3 (x.x1.3 vlan 1, x.x.2.3 vlan2, etc) Then I need both swtich to forward all dhcp request to my dhcp box wich is in vlan 2. My DHCP server will have 5 range of IP address to hand out. my server are connected directly to the dell switch on vlan 2. I have set up a port in the dell switch in trunk mode and did the same thing in the cisco switch and connected them togheter to send all vlan packet. The current setup doesn't work so I need some help to finalize that setup so that everything works.
If you need detail that I might have forgot to mention I wll gladly provide them.
Thanks !

For future reference, I finally succeeded in setting up everything the way I wanted it to be. I enabled layer 3 routing on the sge2010 switch, defined IP for each vlan interface, defined DHCP scope with vlan interface ip as the gateway. Added the ip-helper ip of the dhcp server on the sge2010, I defined 1 of the port on the cisco to trunk mode and added all vlan to it. I then defined all the same vlan on the Dell swith, added the ip helper address of the dhcp server for each vlan on the dell switch, defined a port on the dell swith in trunk mode and added all the vlan to it, connected both swith with an ethernet cable via the trunk port on each side and voilà all is working good. I finally had to define a static route in the cisco switch of 0.0.0.0 mask 0.0.0.0 with the ip of my internet firewall to gain internet access on both switch.

Can I use DHCP snooping and IOS DHCP server on the same switch stack

Hello,
I am shortly going to be deploying a Cisco CallManager solution for a customer whose network comprises stacks of Catalyst 3850 switches.
There is no separate core/server farm switch so the CallManager servers, voice gateways and IP phones will all plug into the same stack and be in the same VLAN (not my choice!).
For security we want to enable DHCP snooping and were planning on using the IOS DHCP server on the Catalyst switch stack.
Will this work? - when I enable DHCP snooping in networks with separate access layer switches I set the uplinks to the core as trusted links.
I am not sure whether DHCP snooping will work in this case. Do I need to set the VLAN interface on the switch as trusted, is this even possible?
Unfortunately I do not have access to a layer 3 switch to test this at the moment.
Thanks

Nope. That's the issue.
They'll sync on a third device acting as a hotspot, but the device sending a signal is not "on" the network it creates so the airport is all by itself on that network. At least that is what it looks like to me. Anyone have another take on it? Seems pretty silly that an iPad can put out a wifi signal, an Airport Express can receive a wifi signal, and yet there is no simple way to get them to communicate under this particular condition.

Nexus 1K VEM module shutdown (with DELL BLADE server)

Hello, This is Vince.
I am doing one of PoC with important customer.
Can anyone help me to explain what the problem is?
I have been found couples of strange situation in a Nexus 1000V with DELL BLADE server)
Actually, Network diagram is like below.
I installed each two Vsphere Esxi on the Dell Blade server.
As Diagram shows each server is connected to Cisco N5K via M8024 Dell Blade Switch.
- two N1KV VM are installed on the Esxi. (of course as Primary and Secondary)
- N5K is connected to M8024 in vPC.
- VSM and VEM are checking each other via Layer3 control interface.
- the way of uplink's port-profile port channel LB is mac pinning.
interface control0
ip address 10.10.100.10/24
svs-domain
domain id 1
control vlan 1
packet vlan 1
svs mode L3 interface control0
port-profile type ethernet Up-Link
vmware port-group
switchport mode trunk
switchport trunk allowed vlan 1-2,10,16,30,77-78,88,100,110,120-121,130
switchport trunk allowed vlan add 140-141,150,160-161,166,266,366
service-policy type queuing output N1KV_SVC_Uplink
channel-group auto mode on mac-pinning
no shutdown
system vlan 1,10,30,100
state enabled
n1000v# show module
Mod Ports Module-Type                       Model               Status
1    0      Virtual Supervisor Module         Nexus1000V          ha-standby
2    0      Virtual Supervisor Module         Nexus1000V          active *
3    332    Virtual Ethernet Module           NA                  ok
4    332    Virtual Ethernet Module           NA                  ok
Mod Sw                  Hw
1    4.2(1)SV2(2.1a)     0.0
2    4.2(1)SV2(2.1a)     0.0
3    4.2(1)SV2(2.1a)     VMware ESXi 5.5.0 Releasebuild-1331820 (3.2)
4    4.2(1)SV2(2.1a)     VMware ESXi 5.5.0 Releasebuild-1331820 (3.2)
Mod Server-IP        Server-UUID                           Server-Name
1    10.10.10.10      NA                                    NA
2    10.10.10.10      NA                                    NA
3    10.10.10.101     4c4c4544-0038-4210-8053-b5c04f485931 10.10.10.101
4    10.10.10.102     4c4c4544-0043-5710-8053-b4c04f335731 10.10.10.102
Let me explain what the strange things happened from now on.
If I move the Primary N1KV on the module 3 to the another Esxi of the module 4, VEM will be shutdown suddenly.
Here is sys logs.
2013 Dec 20 15:45:22 n1000v %VEM_MGR-2-VEM_MGR_REMOVE_NO_HB: Removing VEM 4 (heartbeats lost)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Ethernet4/7 is detached (module removed)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Ethernet4/8 is detached (module removed)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Vethernet1 is detached (module removed)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Vethernet17 is detached (module removed)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Vethernet9 is detached (module removed)
2013 Dec 20 15:45:22 n1000v %VIM-5-IF_DETACHED_MODULE_REMOVED: Interface Vethernet37 is detached (module removed)
2013 Dec 20 15:46:53 n1000v %VEM_MGR-2-MOD_OFFLINE: Module 4 is offline
If I wanna make it works again then I have to do two things.
First of all, It should be selected on the Source MAC Check the way of vSwitch's Load balance.
(Port ID check is the default)
Second of all, the the order of Switch's fail over is very important.
If I change this order then VEM will be off in very soon.
Here you go, the screen capture file of These option. (you may not understand these Korean letters.)
In my opinion, the main problem is the link part between Esxi and M8024.
As you saw, Each Esxi is connected to two M8024 Dell Blade switches separately.
I saw the manual for the way N1K's uplink Load balance.
Even though there are 16 different port-channel LB way,
but It should be used only the way of src-mac If there is no supporting port-channel option in the upstreaming switches.
But I don't know exactly why this situation happened.
Can anyone help me how I make it works better.
Thanks in advance.
Best Regards,
Vince

There's not enough information to determine the reason by those two outputs alone. All those commands tell us is the VSM is removing/attaching the VEM.
The normal cause for the VEM to flap is a problem with the Control VLAN communication. The loss of 6 consecutive heart beats will cause the VEM to detach from the VSM. We need to isolate the reason why.
-Which version of 1000v & ESX?
-Are multiple VEMs affected or just one?
-Are the VSM's interfaces hosted on the DVS or vSwitch?
-What is the network topology between the VEM and VSM (primarily the control VLAN)
-Do you have the Cisco SR # I can take a look into it. TAC is your best course of action for an issue like this. There will likely need to be live troubleshooting into your network environment to determine the cause.
Regards,
Robert

Mac Mini I-7 2.0 (server edition) won't work with Dell 2709W monitor via HDMI

I just got a Mac Mini I7 quad 2.0. It's the server edition with an HDMI port. I plug my Dell 2709W monitor in and it continously flickers on and off and shows a green screen and the desktop for short intervals. Can anyone help with this issue.

Does the monitor work OK when connected to another HDMI output device?
Does the Mini HDMI output work OK when connected to another HDMI device?
You have selected the HDMI input on the monitor, right?

Anyone familiar with Dell OpenManage Server Administrator

Hi there,
I have been having some difficulty with Dell's OpenManage software and there
seems to be little support in their forums with respect to Novell products.
I was hoping I could find someone here who has it set up successfully to ask
a few questions. If it is inappropriate to post questions regarding this
software in these forums then I appologize.
Thanks for your time,
Chris

When you use the Dell install tool it prompts you for the name of the
Tree, The context in which to place the server and the admin user.
Chances are you are simply trying to log in as admin under the worng
context.
The dell install program, if you answered YES to the questions of
storing the response and config files you created then you answer is in
thise files if you can get access to the dos partition.
Chris Skelton wrote:
> I have installed Netware 6.5 SP4a using the overlay ISO image. No Linux has
> been installed. Do you know what account is supposed to be able to log on
> to the Server Administrator web interface?
>
> "Bill Sappington" <[email protected]> wrote in message
> news:BrLdf.704$[email protected]..
>
>>Uhmmm ok...
>>
>>First of all what Novell O/S are you installing? NW 6.5 w/native kernel,
>>are you installing SUSE with the Netware Components?
>>
>>
>>
>>Bill Sappington wrote:
>>
>>>Whats your question if you have not called support already?
>>>
>>>Chris Skelton wrote:
>>>
>>>
>>>>Hi there,
>>>>I have been having some difficulty with Dell's OpenManage software and
>>>>there seems to be little support in their forums with respect to Novell
>>>>products. I was hoping I could find someone here who has it set up
>>>>successfully to ask a few questions. If it is inappropriate to post
>>>>questions regarding this software in these forums then I appologize.
>>>>
>>>>Thanks for your time,
>>>>
>>>>Chris
>>>>
>
>
>

Can not connect with dhcp - renew dhcp lease will switch directly to manuel

If have the following problem
I us apple Airport extreme to connect to internet.
I have 5 Macs, all connecting with airport . They work fine with DHCP. Since 2 weeks I have a problem that one computer – a mac book pro with 10.5.6 will not connect.
When I switch to dhcp and select renew dhcp lease it switch directly back to manuell. I have no chance to connect with dhcp.
Has anyone a suggestion?
Thanks

Wonder why Apple hasn't chimed in on this one...
Whenever you have an issue like this where it's fine, then DHCP stops working for any reason.... Reset the PRAM.
How to:
Apple Logo -> Restart.
After the screen goes black -> Hold down all 4 keys until you hear the third Bong.
"Option"+[Apple Logo OR key to the left of the space bar]"P""R"
After the third BONG or Apple Chime whatever you want to call it. The system's Parameter Ram or to the PC Crowd the CMOS has been reset. This resets your clock, brightness, volume, etc.... So things will get reset along the way but it also resets the IRQ and DMA stats on the logic board. Ala, reseting your Airport's Connection to the logic board, Controllers, etc.

I'm hooked up to the ethernet using DHCP with manual address. It's running (green) but my internet (Safari, messenger, email) doesn't work! Help!

I'm running an iMac with Mountain Lion. Not only do we do accounting work on this computer with AccountEdge, but the computer functions as a server to another computer in a different state.
Anyway, I set a static IP address (Using DHCP with manual address) on it (to allow for a VPN to the computer in the different state) and it is connected (green dot) - meaning that the other computer in the different state can connect to us via that ethernet line - but for some reason Safari, Messanger, and Apple Email won't work.
But if I switch a dynamic IP (DHCP auto), I can use the internet (Safari, messanger, email), but the computer in the different state can't connect to this computer.
How can I fix this so that the computer in the different state can connect to this computer and that the internet (Safari, messanger, and email) can work at the same time?
Much thanks!

No but if they are using a VPN Tunnel for the connection that restricts all internet traffic over the tunnel. Which means you can't use that same computer to broswe the internet or connect to other computers or devices on your LAN.
I'd need to see the actual setup, router and the IP addresses you are using.
Networking and remote networking is fairly easy when you are in front of the systems you are working on. Doing it over the internet on a forum is almost impossible. Tha is why I suggested you get local help, like the person that originally set it up.

Problems with SRW224G4 switch and Bridged Network Cards

Hello,
We have recently installed a SRW224G4 switch and have discovered that when we plug our DELL PowerEdge 2900 server into the switch, the switch loses all network connectivity and all of the LED's on the switch start flashing.
The server works perfectly well plugged into another switch, but as soon as we introduce the SRW224G4 into the network, either with the server plugged into that switch or any other, the problem re-occurs.
The only way we found we could eliminate this issue was if we disabled the Bridged Network connection on the two network cards on the server. If we do that, everything is fine, except the network performance of the server has dropped significantly.
The server is plugged into the 1GB ports on the switch, although we tried it on the 100MB ports and received the same problems. The switch reports that the ports are running at full-duplex.
Has anyone noticed this behavior before, and more importantly been able to rectify it.
Thanks in advance for your assistance,
Paul

I had this problem as well with any Linksys 2024 or rackmountable switch.. The trick is, you need to use the network cards management software to "team" or bridged the 2 NIC's otherwise the switch detects a loop and the whole thing locks up. So lame... Windows built in bridge mode stinks dont use it. When you use the Intel management software or Dell or HP's NIc management software you have the option to actually choose "redundant mode" where you can pick a Nic to be the primary, or you can choose Load Balancing where you can essentially double your throughput by joining the 2 nics.
In Windows 2008 Server, you actually do this by going to the Properties on the NIC in Device Manger. the software controls are now built right into the driver. pretty neat. 2003 you can check Device Manager the same way but not sure if it's the same as 2008, you might need to run the actual NIC management app.
Hope this helps
fdigi

Airports fail to serve DHCP addresses

I am having trouble reconfiguring an existing network with 2 Airport devices -- switching to having the Airports serve addresses via DHCP is failing, and would appreciate help determining what I'm doing wrong here.
Details:
I have a network with a 16-IP public address space x.x.x.208-223. My DSL router/firewall is at x.209, and I have various devices with manually assigned statics IPs in the x.210-x.218 range. The router is configured to serve up the last 4 IP addresses x.219-x.222 via DHCP. Within the static IP range, I have a Time Capsule at x.210 and an Airport Express at x.214, located at far ends of the house, and running differently named wireless networks. They have so far been configured with [Connection sharing: Off (Bridge Mode)] Under Internet > Internet Connection and appropriate manual settings under Internet > TCP/IP.
All has worked fine with this configuration to-date. Our few devices without a static IP were assigned DHCP addresses from the 219-222 range, whether connected via our hard-wired ethernet network, or over either wireless network -- the addresses picked up from the router at 209.
While the 4 addresses available by DHCP were previously sufficient, with the proliferation of mobile devices in my family, it's not enough anymore, and I am trying to reconfigure the Airports to serve up private network blocks 10.0.x.x and 10.0.y.y via DHCP [Connection sharing: Share a public IP address]. This is not working. When I reconfigure either Airport in this manner, network devices connecting via wireless no longer can connect to the internet. Connection to the wireless network itself is fine, but the device is unable to get a DHCP address from the Airport. Instead, after a short delay it gets a self-assigned address in the 169.254.x.x range. This happens with either Airport base station, and both with my iPhone 4 as well as my MacBook Pro.
Thinking that having the router serve DHCP within the public space might be interfering with the Airport DHCP in its own private block, I tried disabling DHCP at the router. Even so, I cannot get the Airports to start serving IP addresses to their wireless clients.
Any suggestions ?

Hi Linc,
I appreciate the discussion. Let me reply in-line
Linc Davis wrote:
I'm having a lot of trouble understanding your questions. Rather than trying to figure it out, let me tell you how it should work.
You have a DSL modem that is also a router. It gets an address for its WAN interface from your ISP's DHCP server, or it has a static address -- doesn't matter which.
My router has a static WAN IP address, which is in my ISP's subnet. The LAN is my own public subnet 209.128.72.208/28, and the router's LAN IP address is 209.128.72.209.
It had better not be serving DHCP on the WAN, or you may get kicked off by your ISP. I'd be surprised if you were even able to configure it that way.
No, it's not serving DHCP on the WAN. It is serving DHCP only on the LAN, in the 209.128.72.219-222 range.
The router's LAN interface has a fixed private IP address that you configure. It serves DHCP to other devices on the LAN.
Yes, that is how it is.
The AE can get an address from the router for its Ethernet port from the router, or it can have a fixed address, whichever you want.
Yes, it is configured with its own static, manually configured address, which is 209.128.72.214, outside of the DHCP range served by the router.
Set it to operate in bridge mode, which means that the wireless network will be like an extension of the wired network, with the same address pool. Wireless devices will get their addresses from the router.
Yes. To-date I have operated it in bridge mode, exactly that way. And it's worked great up until now. Devices with manually assigned IP addresses in the 209.128.72.210-218 range have worked fine either when connected by ethernet or wireless, and those without (iPhones, etc) have picked up DHCP addresses from the router just fine.
The AE does not need to be a DHCP server.
Unless your needs are very unusual, that setup will work for you.
And so it has worked that way for a while. However, my needs have changed recently. The range of available IPs for DHCP from the router is limited to 4 devices (209.128.72.219-222). That worked fine when we had only 4 devices (iPhone, iPad, Roku, and Blackberry). Now, the kids have wireless devices (iPod touch and an old iPhone). The available range is not sufficient for 6 devices. So, rather than serve wireless devices with addresses from the limited remaining IPs in the public subnet, I want to have the AE serve DHCP in a private network 10.1.x.0/24 , which obviously has alot more room.
I'm willing to try turning off DHCP on the router completely. That doesn't seem to help -- I've tried it twice.

Netbooting issue with Netgear switches

Hi,
We’ve started having issues with Netbooting since we recently replaced our network hardware, going from very old (10 yrs +) 3Com switches running at 100MB to desktop / 1GB backbone to brand new Netgear switches at 1GB desktop / 10GB backbone.
On the old network hardware Netbooting would work fine, showing a list of Netboot images that we are able to boot from with no issue (mainly used for DeployStudio). We have two Mac servers on our network, and now, rather than being able to get a list of Netboot images, it seemingly selects one of the two “Default” images (one for each server) at random. Whichever image is selected works correctly, but we now have no way of choosing at time of bootup.
Other than replacing the switches, nothing else has changed (that I am aware of) that could have caused this to stop working. However, some relevant info:
The new Netgear switches are generally M5300-52G-POE+ with a small number of XSM7224S.
Spanning Tree is enabled on the switches (set to Rapid Spanning Tree – 802.1w). Have also tried with STP turned off totally as I understand this may make a difference – however it did not.
The infrastructure is a mixed network, with both Windows PC’s/Servers sitting on the same network as the Macs. DHCP is supplied by one of the Windows servers.
No VLAN’s are set up – all running on same network.
Both Mac servers are sitting in different physical locations on the network. One is running 10.9.4 and the other on 10.6.8
If I boot holding down Option then I only see the local hard disk.
If I boot holding down either N or Option N then the Mac boots using one of the two Default Netboot images, seemingly at random, from one of the two Mac servers. This is as expected for Option N, but N alone used to bring up a list of images (including those not selected as the default on either server).
All the netboot images show up correctly within the Startup Disk option within System Preferences. I can then boot successfully from any of them in this manner, and am therefore able to get round my problem in the short term, but of course this isn’t ideal.
I have tried setting the netinstall images to be available both over HTTP and NFS, but this has no effect. Also there are no access restrictions in place for any of the images.
I’m not 100% convinced that the issue is related to swapping to Netgear switches. Particularly as no specific configuration was ever done on the old 3Com switches to get netboot working (it just worked from the start). Also, the new switches are so much quicker than the old ones. That said it seems far too coincidental that this started happening when the switches were swapped over, and that as I said before, nothing else has changed.
If there’s anything anyone can suggest that I can check, both with the switch configuration or otherwise, I’d be really grateful.
Finally, just to say I’m more a Windows person than a Mac man, so treat me gently J
Cheers,
LSDWho

NetBoot uses DHCP to look for available NetBoot servers so when you hold down just N at boot time it sends a DHCP query asking NetBoot servers to advertise themselves. This might therefore suggest the issue is DHCP related. (Strictly speaking NetBoot uses BSDP - Boot Service Discovery Protocol.)
Note: This use of DHCP by NetBoot does not normally conflict with a real full-blown DHCP server which would ignore this type of query. So it should not cause an issue with your Windows DHCP server.
Since it might be DHCP related I would look at the following -
http://kb.netgear.com/app/answers/detail/a_id/21984/~/what-is-a-dhcp-l2-relay-an d-how-does-it-work-with-my-manged-switch%3F
http://kb.netgear.com/app/answers/detail/a_id/21990/~/how-do-i-configure-a-dhcp- l3-relay-using-the-web-interface-on-my-managed-switch%3F
I would then see if you can disable DHCP relay functionality and also any other related features like DHCP filtering. If you have not already done so it might be worth checking for any firmware updates and installing those as often 'new' switches out of the box will have shipped with older firmware.

Suggestions on DHCP using cascading switches

Is there any reason you can't create a different vlan and create a new scope for that vlan on your current dhcp server along with helper addresses on your switches? It seems you're over complicating things as of right now.

gents,we like to provide a WLAN Network for guests in our Company which is connected through a different Provider than our internal Network.I connected the incoming hardline to one router - providing WLAN #1 with DHCP.I like to route it to two floors, using the LAN environment.I have only ONE line available to get the Provider to our Switch-rack.My idea is to connectthe LAN-port of WLAN-Router #1 to the Switch rack and attach another WLAN-Routers to the other floors.My question is: what is the best way to provideDHCP ?a) Router#1 is doing DHCP and all connected secondary routers are just passing through.b) every Router is doing DHCP for himselfI once read that there could be Problems using cascading Switches/Routers. Any enlightment here?
This topic first appeared in the Spiceworks Community

SG 300 seems to be preventing Windows systems from get an IP via Windows server DHCP

All the basics from the server are working and have been for years. I would appreciate not being asked to check the basics as "is the DHCP server registered".
There seems to be an issue where the VLAN is preventing DHCP from working. I have also read that MAC addresses don't get registered until there is a write. The issue also seems to roam. It affects different PC's at different times. I had this issue with this switch approximately a year ago.
Can I at least get some direction until I can post the firmware version and config. Its a busy small business and this issue is extremely unpredictable.
Thank you

Hi
check if you have DHCP snooping disabled (at least try to turn it off and see if it helps)
check if you are running Rapid version of STP protocol
check if all ports toward end-user devices are configured as spanning-tree portfast ports. if you are not use portfast, your port transition to forwarding state could takes longer time resulted that all DHCP discover packets from client will be just dropped on switchport site until port transits to forwarding state.

How share ADSL Internet connection to all machines without RRAS but using Windows Server DHCP and DNS

Hello!
I have this scenario on my small network with 10 PCs (connecting from outside to inside my network):
1) Modem with ADSL connection
2) Wireless Router with public IP on WAN interface
3) Switch
4) Server 2012 with DC/DHCP/DNS (with 2 NICs) and others servers/desktops machines
I want to share internet to servers and desktops.
I was able to share internet by 2 methods searching on google, but I am not satisfied with them:
First method - Using the Wireless Router and its DHCP Server
I turned on the DHCP inside the Wireless Router. All machines will get an IP and be able to go to Internet, but I don’t have the ability to control the DHCP and DNS in the router
how I would like to have, because the server DHCP and DNS must be turned off on Windows Server.
Second method - Using the Windows Server RRAS NAT, DHCP and DNS server
I have 2 NICs on the server:
NIC1 - CONNECTED TO SWITCH
IP: 192.168.1.1
MSK: 255.255.255.0
GTW:192.168.1.1
DNS:192.168.1.1
NIC2 - CONNECTED TO WIRELESS ROUTER
(the LAN IP of the wireless router is 172.16.0.1)
IP: 172.16.0.2
MSK: 255.255.0.0
GTW: 172.16.0.1
DNS: 172.16.0.1
After installing and setting the RRAS with NAT at the Server, the internet began to work on all machines but at some times the internet stop to load some
random webpages, and if you hit a couple of times the F5 button, the webpage open sometimes, but very, very slow.
I saw other people in foruns saying that RRAS is not very good, and could cause weird things at internet connection, so, now I think the internet is horrible
because of RRAS. After notice that internet is bad I tested it connecting a cable direct to the lan ports of the Wireless Router, and the internet works fast and perfect.
What is the best thing to do in my case to maintain Windows Server DHCP and DNS turned on and Internet be shared without loss of quality?
Thank you!

Hi,
please deploy according to this network topology. please turn off DHCP from router and use internal NAT function to share internet. Detailed configurations:
Router part:
LAN address: 192.168.1.1/24
DHCP part:
scope name : site name
address pool: 192.168.1.3-192.168.1.254
scope options:
router:192.168.1.1
DNS server:192.168.1.2
DNS part:
configure a forwarder to point to the public DNS address such as 8.8.8.8
with these settings, you can maintain Windows Server DHCP and DNS turned on and Internet be shared via hardware router.
Regards,
Mike
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Suppress the pop-up box in iCal when "The server responded with an error"

So there are tons of questions already on this site about this pop-up error in iCal when trying to connect to Google calendars or MobileMe calendars. My issue is that the connection is fine 90% of the time, but every now and then the connection fails (it checks every 5 minutes) and I get this pop-up.
Now in a perfect world, this error would not result in a pop-up that demands my immediate attention, but would fail silently and simply try again 5 minutes later. Normally Apple's software design is sensible and would do things this way, so I'm totally confused why they think a pop-up (and bouncing dock icon) is anything but annoying, especially when I know it's not a big deal and will probably connect successfully next time.
Soooo... is there a top-secret way I can suppress this pop-up box? It is one of those things that can drive one insane. I even switched to BusyCal for a while but decided it wasn't quite worth $50 just to be rid of the pop-up.

Is this the pop-up you get?
The request for account “[email protected]” failed.
The server responded with
“HTTP/1.1 502 Bad Gateway”
to operation CalDAVAccountRefreshQueueableOperation.
I've never seen it before but am getting it this evening (UK time). Also if I try to log in to MMe Calendar it's not logging in but going to 'find my iPhone' like it did when Mail was mucking about a few weeks back.

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