how to reduce Time-to-Live (TTL) setting on wireless network

August 14, 2016 at 22:48:27
Specs: Windows 64
hi guys , i'm having a very strange issue , when i ping any device connected to our access points i recive very high TTL time "more than 1000 ms" , our lan is fine , pinging any where will not exceed "2 ms" , have in mind that we are using unified D_link WiFi controller with 6600 Dlink access points ,

i tried upgrading the firmware for all the mentioned devices , nothing changed.

also i checked the power saving modes , noting changes .

no dropped packets reported .


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#1
August 15, 2016 at 01:14:52
Do the connected (wireless) devices experience slow network conditions? Is this a private network or with public access?



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#2
August 15, 2016 at 01:44:46
thanks for the quick response, yes they are , "printers , phones , PC's , TV's" ...it's private


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#3
August 15, 2016 at 07:07:39
Check the TTL settings in your DHCP server. Can you manually adjust them there? If yes, what are they set at?

Oops! I forgot to add, TTL should not affect ping time or connectivity. It's just in place to control how long data (packets) stay "alive" on the network.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

message edited by Curt R


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Related Solutions

#4
August 15, 2016 at 12:18:32
What operating system are you using. Presumably it is the 64 bit version of "something", XP, Vista, Windows 7, Windows 8, Windows 10?

Always pop back and let us know the outcome - thanks


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#5
August 15, 2016 at 19:14:37
TV's: does that mean streaming video? Does the network bandwidth support all this activity? ICMP (ping etc.) usually have a low priority on most IP/TCP devices although 1 sec is excessive.

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#6
August 16, 2016 at 04:14:47
Yes , its allowed for some devices , and we have very big bandwith

message edited by Moawia307


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#7
August 16, 2016 at 04:19:12
i'm really sorry for confusing you , I ment to say the Reply Time , TTL is Fixed as always.

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#8
August 16, 2016 at 07:01:10
TTL can be adjusted, at least on equipment more advanced than SOHO equipment.

If your response times are in excess of 1000 ms on a LAN then you definitely have issues. Please give me an idea of your network's physical and logical layout.

ie:

X number of devices on a single floor/2 floors/3 floors etc.

What kind of device manages your internet connection/DHCP/DNS etc.

What type of switches are you using (basic, layer 2, layer 3) and how are they connected (ie: daisy chained, connect back to core).

How many subnets/VLAN's?

etc...

Lastly, just to be sure, are these excessive ping times on the LAN, or to external resources?

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

message edited by Curt R


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#9
August 23, 2016 at 00:26:37
Ethernet Network IS Fine , Ping Time is 1 or 2 ms , to any where , unless you are

pinging a wireless connected device then you will start getting the High Respond Time .

6 Dlink 6600 AP's distributed among the building , two flour building "Very wide though" ,

Managed By Dlink DWC 1000 controller , connected to layer 3 Gigabyte Cisco switch ,


sorry for delayed Response , i was a bit busy


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#10
August 23, 2016 at 05:43:38
Re #4.

Could you state your operating system in your specs please.

Thanks.

Always pop back and let us know the outcome - thanks


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#11
August 23, 2016 at 07:23:21
pinging a wireless connected device then you will start getting the High Respond Time

Wireless has inherent issues with lag and latency so you can expect slower responses when accessing a wifi network from a LAN and vice versa. But, 1000 ms ping response times are way higher than I would expect.

I'm not at all familiar with your wireless devices but that's where I would start looking for issues if it were me.

The first question that comes to my mind is, how is performance when going from one wifi client to another? Are the ping responses as slow as when you go from the wired network to the wireless? How about when you go from wifi to wired? Run a few ping tests and get back to us with the results.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#12
August 25, 2016 at 07:06:39
client to another performance its a bit different , but all in general are bad ,

pining from wired to wifi will result in high response time to wireless connected devices .


pinging from wifi will result in high response from any thing "wired or wireless"


any way , unless some one is familiar with those devices , i don't think he will be able to help me , i really appreciate your help guys , thanks a lot for interacting


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#13
August 26, 2016 at 07:09:27
From the sounds of it, you definitely have some hardware issues. I suggest you call the vendor's support people and get them looking into it.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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