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[alessiocesar]

Hi guys,

I would really appreciate your help with a couple of questions..Just bought a DIR-655 (Hardware Version: A4, although the label says A3, Firmware Version: 1.21) based on good reviews, but so far being very dissapointed with it. I haven't upgraded the firmware because of all the issues listed here. Honestly I thought of staying with orig fw, not knowing which one is good.

-I get very low speeds LAN and WiFI (broadcasting n and g ). I tried disabling DNS relay, but then I cannot even browse the Internet.

What settings do I need to do to accomplish the very good speeds people are talking about in regards to this router?

-I have a linux box running ssh2 server, and sftp and also an IP camera that has a web server incorporated in it...What should I use Virtual server or port forwarding screen? What is the difference? I came from WRT54G, boy that ran so good, easy to set up etc, just no Gig LAN and no N wifi..


Thank you for your time and God Bless You!

Regards,
ac

[jason1722x]

Virtual Server
The Virtual Server option gives Internet users access to services on your LAN. This feature is useful for hosting online services such as FTP, Web, or game servers. For each Virtual Server, you define a public port on your router for redirection to an internal LAN IP Address and LAN port.

Example:
You are hosting a Web Server on a PC that has LAN IP Address of 192.168.0.50 and your ISP is blocking Port 80.
Name the Virtual Server (for example: Web Server)
Enter the IP Address of the machine on your LAN (for example: 192.168.0.50)
Enter the Private Port as [80]
Enter the Public Port as [8888]
Select the Protocol (for example TCP).
Ensure the schedule is set to Always
Click Save to add the settings to the Virtual Servers List
Repeat these steps for each Virtual Server Rule you wish to add. After the list is complete, click Save Settings at the top of the page.
With this Virtual Server entry, all Internet traffic on Port 8888 will be redirected to your internal web server on port 80 at IP Address 192.168.0.50.

Port Forwarding
Multiple connections are required by some applications, such as internet games, video conferencing, Internet telephony, and others. These applications have difficulties working through NAT (Network Address Translation). This section is used to open multiple ports or a range of ports in your router and redirect data through those ports to a single PC on your network. You can enter ports in various formats:

Range (50-100)
Individual (80, 68, 888)
Mixed (1020-5000, 689)

Example:
Suppose you are hosting an online game server that is running on a PC with a private IP Address of 192.168.0.50. This game requires that you open multiple ports (6159-6180, 99) on the router so Internet users can connect.


How do you have your network setup? I'll be glad to try to help but I'm no expert and have LIMITED network knowledge.

[alessiocesar]

I read all that but things still don't work...
I have cable modem going into DIR-655 and PC's connected to 1G ports, a couple wifi.

Thanks,
ac

[jason1722x]

Are you running MAC filtering?
Wireless running on mixed mode  G & N? If not try it, I hear it's better.
Is your cable modem running DHCP, how about the Dir 655?

[alessiocesar]

Are you running MAC filtering?
Wireless running on mixed mode  G & N? If not try it, I hear it's better.
Is your cable modem running DHCP, how about the Dir 655?

No MAC filtering.
G and N
Never cfg-ed the cable modem. I have DIR-655 cfg-ed as DHCP server.

Thanks,
ac

[jason1722x]

DO this it should help.
Uncheck DHCP server on the 655, your cable modem is handling that task.
log into the 655 go to advanced-->network filter
You need the MAC Address for each computer or device. It's a 12 digit number and or letters looks like this xx:xx:xx:xx:xx:xx. Example:  00:3r:45:5t:dy:78 could be any combo, it's the hardware unique ID.

If you can't find the MAC, do this (in xp start-->run--> type "cmd" hit enter. A dos window will pop up. type "getmac" without the quotation marks, hit enter. you will see the physical address of your network card.

Type that address into the router under "Mac Address", under "DHCP Client List" you should type your exact name that windows assigned your computer. example: alessiocesar_12h58kl

Do that with each computer.

[jason1722x]

also
Dynamic Fragmentation
This option should be enabled when you have a slow Internet uplink. It helps to reduce the impact that large low priority network packets can have on more urgent ones by breaking the large packets into several smaller packets.

Try this disable Dynamic Fragmentation (Advanced/Qos engine setup/ uncheck DF).

[alessiocesar]

Sorry but I don't see how restricting the access to on;y a few MAC's can help...Also I need DHCP server on my router, never used DHCP on the cable modem...I had the same settings with my old WRT54G and np whatsoever...

One question please, why everyone is talking about unchecking DNS relay..If I do that I cannot go to any web sites..Please elaborate.

DO this it should help.
Uncheck DHCP server on the 655, your cable modem is handling that task.
log into the 655 go to advanced-->network filter
You need the MAC Address for each computer or device. It's a 12 digit number and or letters looks like this xx:xx:xx:xx:xx:xx. Example:  00:3r:45:5t:dy:78 could be any combo, it's the hardware unique ID.

If you can't find the MAC, do this (in xp start-->run--> type "cmd" hit enter. A dos window will pop up. type "getmac" without the quotation marks, hit enter. you will see the physical address of your network card.

Type that address into the router under "Mac Address", under "DHCP Client List" you should type your exact name that windows assigned your computer. example: alessiocesar_12h58kl

Do that with each computer.

[alessiocesar]

I have 10M DL and 1.5M UL...No need for that I would think.

also
Dynamic Fragmentation
This option should be enabled when you have a slow Internet uplink. It helps to reduce the impact that large low priority network packets can have on more urgent ones by breaking the large packets into several smaller packets.

Try this disable Dynamic Fragmentation (Advanced/Qos engine setup/ uncheck DF).

[jason1722x]

I have 10M DL and 1.5M UL...No need for that I would think.

Quoting cmk1198
"You probably won't need to make any configuration changes after disabling DNS relay. All this setting does, is allows you to use your router IP as a DNS address. For example, if DNS relay is on, the devices currently connected to the router will have their DNS resolution addresses set to the router's IP. If this setting is turned off, the DNS servers from your ISP will be given directly to any device connected to the router. This only affects DNS and not your actual IP addresses. Quite a few people report no issues with their routers after disabling DNS relay, so this would be a good first step.

For further troubleshooting, you may want to connect one of your computers directly to your modem... check your ping times in games and through the command prompt to various sites with this setup. There is a very good possibility that you have some type of line issue, or there is an internal ISP issue that is causing your problem. This obviously will rule out any problem with the router.

If the router is indeed the culprit, and you still have these problems after disabling DNS relay, if it's possible you may want to change the wireless settings on the router to support wireless G or N only (not a mixed mode). Let us know how this works out for you."

[jason1722x]

Sorry but I don't see how restricting the access to on;y a few MAC's can help...Also I need DHCP server on my router, never used DHCP on the cable modem...I had the same settings with my old WRT54G and np whatsoever...

One question please, why everyone is talking about unchecking DNS relay..If I do that I cannot go to any web sites..Please elaborate.

MAC filtering only restricting the systems the cable is connected to not the speed, it also helps with security.
Unless your cable modem is running in bride mode it has and is running DHCP. What type of modem and cable service do you have?
DHCP Server Settings
DHCP stands for Dynamic Host Configuration Protocol. The DHCP section is where you configure the built-in DHCP Server to assign IP addresses to the computers and other devices on your local area network (LAN).

Enable DHCP Server
Once your D-Link router is properly configured and this option is enabled, the DHCP Server will manage the IP addresses and other network configuration information for computers and other devices connected to your Local Area Network. There is no need for you to do this yourself.

The computers (and other devices) connected to your LAN also need to have their TCP/IP configuration set to "DHCP" or "Obtain an IP address automatically".

When you set Enable DHCP Server, the following options are displayed.

DHCP IP Address Range
These two IP values (from and to) define a range of IP addresses that the DHCP Server uses when assigning addresses to computers and devices on your Local Area Network. Any addresses that are outside of this range are not managed by the DHCP Server; these could, therefore, be used for manually configured devices or devices that cannot use DHCP to obtain network address details automatically.
It is possible for a computer or device that is manually configured to have an address that does reside within this range. In this case the address should be reserved (see DHCP Reservation below), so that the DHCP Server knows that this specific address can only be used by a specific computer or device.

Your D-Link router, by default, has a static IP address of 192.168.0.1. This means that addresses 192.168.0.2 to 192.168.0.254 can be made available for allocation by the DHCP Server.

Example:
Your D-Link router uses 192.168.0.1 for the IP address. You've assigned a computer that you want to designate as a Web server with a static IP address of 192.168.0.3. You've assigned another computer that you want to designate as an FTP server with a static IP address of 192.168.0.4. Therefore the starting IP address for your DHCP IP address range needs to be 192.168.0.5 or greater.
Example:
Suppose you configure the DHCP Server to manage addresses From 192.168.0.100 To 192.168.0.199. This means that 192.168.0.3 to 192.168.0.99 and 192.168.0.200 to 192.168.0.254 are NOT managed by the DHCP Server. Computers or devices that use addresses from these ranges are to be manually configured. Suppose you have a web server computer that has a manually configured address of 192.168.0.100. Because this falls within the "managed range" be sure to create a reservation for this address and match it to the relevant computer (see Static DHCP Client below).

[jason1722x]

I have 10M DL and 1.5M UL...No need for that I would think.

What I meant was to uncheck it if it is enabled.

The 655 might work for some right out of the box, but home networks are as different as the people that use them. But certain configs. will help you take full advantage of the cable service your paying for.

[alessiocesar]

Thanks for the intro but...I do appreciate your help. Please see my set up below:

First of all I changed my router IP to 192.168.1.1, just to match what I had on my old one.
I have a few devices which I assigned static IP's to in the range from 192.168.1.2-192.168.1.99. Then I enabled my DHCP server on 655 from 192.168.1.100 to 120, don't have more than 20 devices.

Now the reason I don't want to use MAC filtering is because first I hate to punch MAC numbers everytime I get a new device connect to my LAN, and secondly after going through my last ccnp exam I realized that is not really a security measure, can be broken easily.

Now I just need to figure out the DNS relay thing....My cable modem is SB5120, I can't find out how can I disable DHCP on that, if you say so...

MAC filtering only restricting the systems the cable is connected to not the speed, it also helps with security.
Unless your cable modem is running in bride mode it has and is running DHCP. What type of modem and cable service do you have?
DHCP Server Settings
DHCP stands for Dynamic Host Configuration Protocol. The DHCP section is where you configure the built-in DHCP Server to assign IP addresses to the computers and other devices on your local area network (LAN).

Enable DHCP Server
Once your D-Link router is properly configured and this option is enabled, the DHCP Server will manage the IP addresses and other network configuration information for computers and other devices connected to your Local Area Network. There is no need for you to do this yourself.

The computers (and other devices) connected to your LAN also need to have their TCP/IP configuration set to "DHCP" or "Obtain an IP address automatically".

When you set Enable DHCP Server, the following options are displayed.

DHCP IP Address Range
These two IP values (from and to) define a range of IP addresses that the DHCP Server uses when assigning addresses to computers and devices on your Local Area Network. Any addresses that are outside of this range are not managed by the DHCP Server; these could, therefore, be used for manually configured devices or devices that cannot use DHCP to obtain network address details automatically.
It is possible for a computer or device that is manually configured to have an address that does reside within this range. In this case the address should be reserved (see DHCP Reservation below), so that the DHCP Server knows that this specific address can only be used by a specific computer or device.

Your D-Link router, by default, has a static IP address of 192.168.0.1. This means that addresses 192.168.0.2 to 192.168.0.254 can be made available for allocation by the DHCP Server.

Example:
Your D-Link router uses 192.168.0.1 for the IP address. You've assigned a computer that you want to designate as a Web server with a static IP address of 192.168.0.3. You've assigned another computer that you want to designate as an FTP server with a static IP address of 192.168.0.4. Therefore the starting IP address for your DHCP IP address range needs to be 192.168.0.5 or greater.
Example:
Suppose you configure the DHCP Server to manage addresses From 192.168.0.100 To 192.168.0.199. This means that 192.168.0.3 to 192.168.0.99 and 192.168.0.200 to 192.168.0.254 are NOT managed by the DHCP Server. Computers or devices that use addresses from these ranges are to be manually configured. Suppose you have a web server computer that has a manually configured address of 192.168.0.100. Because this falls within the "managed range" be sure to create a reservation for this address and match it to the relevant computer (see Static DHCP Client below).

[jason1722x]

Hey I didn't realize you had schooling for this stuff, most that come here are beginners like myself.
FYI: SB5120 DHCP can't be disabled.

good luck to ya

[alessiocesar]

That's ok Man, thanks...Anyways I think I found it..Disable DNS relay and uncheck Use Unicasting...Much faster now...

The only one left now is this:
-I have a linux box running ssh2 server, and sftp and also an IP camera that has a web server incorporated in it...What should I use Virtual server or port forwarding screen? What is the difference? I came from WRT54G, boy that ran so good, easy to set up etc, just no Gig LAN and no N wifi..


-ac

Hey I didn't realize you had schooling for this stuff, most that come here are beginners like myself.
FYI: SB5120 DHCP can't be disabled.

good luck to ya