router across the T1. In contrast, going
from the client to the Pix directly yields a throughput of about 130%
over the router/T1 combo.
Question
Of course, there is latency involved in going up to the router first.
But is there a way to reduce the latency on the router and/or allow
the Pix to re
gt;class-map TV : access-list with 'log' not
supported >class-map Policy : access-list with 'log' not supported > > >
> > > >"YASSER ALY" @groupstudy.com em 2003-01-14 15:47:54 > >Favor
responder a "YASSER ALY" > >Enviado Por: [
ot;
Enviado Por: [EMAIL PROTECTED]
Para: [EMAIL PROTECTED]
cc:
Assunto:Re: Low Latency Queue on ATM Subinterface [7:61018]
Add the keyword "log" at the end of your access list and check whether
there are really hits matching the ACL or not. Maybe everything is right
and u
Add the keyword "log" at the end of your access list and check whether
there are really hits matching the ACL or not. Maybe everything is right
and u are just sending another traffic not matching with the ACL.
>From: "alaerte Vidali" > >The following LLQ is configured but no packets
are going t
The following LLQ is configured but no packets are going to the priority
queue; all packets go to the default class:
class-map match-all Priority-Queue
match access-group name TV
!
policy-map Policy
class Priority-Queue
priority 200
class class-default
random-detect
fair-queue
!
Hi,
Is it a MUST to configure 'fragmentation' (under 1.5M wan link) when
enabling LLQ (for voip over frame-relay)? How about if One side connection
is FR but another is just a simply leased line?
Thanks.
rgds,
ivan
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=60939&t=59820
, December 27, 2002 12:06 PM
To: [EMAIL PROTECTED]
Subject: FR Low Latency Queuing (LLQ) [7:59820]
Hi,
I would like to configure QoS by using FR LLQ. I have the following network
test lab.
pc1 --|
---router1FR network-router FTP server
pc2---|
I want to test the LLQ
'priority'
You are correct.
>2. if using 'bandwidth', then I'm not using LLQ. What I'm using is
CBWFQ.
You are only allowed to use the priority keyword with the PQ where its
main concern is to forward packets as fast as it can. That's why no queue
size is
Hi All,
Thanks all information.
I am a little bit confused about LLQ. Below is my understanding after
digesting some documentation and feedback from others. Please correct me if
I'm wrong.
1. LLQ=PQ+CBWFQ and PQ is defined by using 'priority'
2. if using 'bandwidth', then I'm not using LLQ. What
ll ping packets than many
large FTP packets.
Rik
-Original Message-
From: Ivan Yip [mailto:[EMAIL PROTECTED]]
Sent: Monday, 30 December 2002 12:07 PM
To: [EMAIL PROTECTED]
Subject: RE: FR Low Latency Queuing (LLQ) [7:59820]
Hi,
I got the following information during debug.
128K_LL
Hi,
I got the following information during debug.
128K_LL#debug priority
Priority output queueing debugging is on
128K_LL#
3d01h: now 263877385 tokens 16000 pak_size 12032 max_token_limit 16000
3d01h: now 263877750 tokens 16000 pak_size 12032 max_token_limit 16000
3d01h: now 263877754 tokens 4288
Hi,
Use debug priority (for LLQ)while simulating and see if u get any info..
-Original Message-
From: Ivan Yip [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 27, 2002 3:28 PM
To: [EMAIL PROTECTED]
Subject: RE: FR Low Latency Queuing (LLQ) [7:59820]
Hi,
Thanks your information.
My
Hi,
Thanks your information.
My goal is to make sure from certain source ip (eg, voice gateway) to have
guaranteed bandwidth under link congestion. Under normal cases, it can up to
128k. Therefore, 'rate-limit' is not my solution.
Due to limited resources, pc2 will upload dummy ftp traffic to th
ensure that you are simulating congestion in ur setup to verify
CBWFQ & LLQ.How much traffic are u pumping per sec to simulate congestion ?
Kind Regards /Thangavel
-Original Message-
From: Ivan Yip [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 27, 2002 12:06 PM
To: [EMAIL PROTECTED]
Hi,
I would like to configure QoS by using FR LLQ. I have the following network
test lab.
pc1 --|
---router1FR network-router FTP server
pc2---|
I want to test the LLQ feature, ie, fixed bandwidth allocated to certain
taffic.
I tested with the following steps
1. up
: bandwidth vs. latency [7:57899]
Mirza, Timur wrote:
>
> does anyone have a good reference (e.g., white paper) on the
> nature of
> bandwidth vs latency & the distinction bet/ the two?
>
> Timur Mirza
> Principal Network Engineer
> Network Planning & Engineering, W
Mirza, Timur wrote:
>
> does anyone have a good reference (e.g., white paper) on the
> nature of
> bandwidth vs latency & the distinction bet/ the two?
>
> Timur Mirza
> Principal Network Engineer
> Network Planning & Engineering, West Region
> 15505-B Sand
By the way, I was in a hurry when I wrote my answer. I would just like to
mention that testing latency with pings, as I mentioned below, is an
over-simplification. You can get false results for many reasons, including
rate-limiting of ICMP on routers, etc.
You should test with the application
Let me expand on Priscilla's thoughts. The reality is that for more
than trivial problems, you need a lot of information to model
latency. Bandwidth is easy.
At 1:24 AM + 11/23/02, Priscilla Oppenheimer wrote:
>Mirza, Timur wrote:
>>
>> does anyone have a good re
. if you are an order of magnitude higher it would indicate a
problem.
thanks.
- Original Message -
From: "Symon Thurlow"
To:
Sent: Saturday, November 23, 2002 8:33 AM
Subject: RE: bandwidth vs. latency [7:57899]
> Anyone know what the average expected latency over F
Anyone know what the average expected latency over Frame Relay is?
-Original Message-
From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
Sent: 23 November 2002 01:24
To: [EMAIL PROTECTED]
Subject: RE: bandwidth vs. latency [7:57899]
Mirza, Timur wrote:
>
> does anyone have
Mirza, Timur wrote:
>
> does anyone have a good reference (e.g., white paper) on the
> nature of
> bandwidth vs latency & the distinction bet/ the two?
Well, the distinction is easy. They don't mean the same thing at all. A good
site is Merriam Webster's online dict
does anyone have a good reference (e.g., white paper) on the nature of
bandwidth vs latency & the distinction bet/ the two?
Timur Mirza
Principal Network Engineer
Network Planning & Engineering, West Region
15505-B Sand Canyon Avenue
Irvine, California 92618
Verizon Wireless
949.286
traffic congestion on the circuit
""NIGEC Spar Engineers"" wrote in message
news:200211131018.KAA02102@;groupstudy.com...
> please could anyone tell me what are the factors that affect a WAN link
> ping return time. does the latency has to do with the link quality or th
s and respond to the query, which
> might take a lot longer than it would for the router to forward a
> packet. Hence, your ping latency may not equal the transit latency for
> normal packets.
>
> On Wed, 2002-11-13 at 05:18, NIGEC Spar Engineers wrote:
> > please could any
your ping latency may not equal the transit latency for
normal packets.
On Wed, 2002-11-13 at 05:18, NIGEC Spar Engineers wrote:
> please could anyone tell me what are the factors that affect a WAN link
> ping return time. does the latency has to do with the link quality or the
> amount of
please could anyone tell me what are the factors that affect a WAN link
ping return time. does the latency has to do with the link quality or the
amount of traffic over the link or what? please a need replies
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=57344&
All,
Has anyone supported SAP database/application in your network or customer
network? If so, what is the general standard in latency
requirement to make this work properly.
I am hearing that possibly Meta Group has put out some results that
says the requirement to run SAP is 200 ms RTD or
Folks,
I have a friend that has a CiscoWorks IPM running on a LAN monitoring a
couple
of routers with STM-1 ATM interfaces on it (3 in one, and 2 on the other
one).
It monitors latency between this routers and the routers on the other end of
th ATM interfaces (different routers).
He's te
DW wrote:
>
> Thanks for the replies. Priscilla I tried the ping into both of
> the networks
> in question and have recieved the same results. As an aside, is
> there an
> acceptable level of variance in the results of a ping and what
> are the side
I can't quote an exact number for an acceptabl
L would have on throughput. We
have 7.5mbps access and the 515 has 188mbps throughput and that seems to be
plenty to me. BUT there has been doubt expressed on 2 issues. They are that
the 188mbps is sales fluff and that it is more like 50mbps in reality, and
that SSL will indeed cause latency and affect the th
It might be time to break out the sniffer. Have a host copy a file over the
network across the link and look at the general response times it each
packet takes on the acknowledements. Do a variety of tests in this manner.
if you could run netperf, a freeware, across the link that'd be good.
""DW"
Thanks for the replies. Priscilla I tried the ping into both of the networks
in question and have recieved the same results. As an aside, is there an
acceptable level of variance in the results of a ping and what are the side
effects of such a large dicrepancy in the ping response times.
I have ru
Try pinging into the network. I wouldn't trust the results of pinging the
router's own serial interface. Routers have more important things to do than
respond to pings. I can't say for sure (better read that IOS Architecture
book!), but I think the IOS responds to pings at a low priority. Try ping
The devices are both 2610's. I am telnetting to one of the 2610's and
pinging the serial interface / Frame Relay subinterface on the directly
connected devices (Not pinging into the network). The leased line is running
PPP. What is strange is that it is the same result across both links. The
Min/M
Are you pinging a directly connected interface or something deeper into the
network???
-Original Message-
From: DW [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 29, 2002 11:44 AM
To: [EMAIL PROTECTED]
Subject: Ping latency [7:50018]
I am running 2 WAN links through the same router
What type of device?
What layer 2 protocol? PPP or HDLC?
What is the source and destination of the ping?
""DW"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I am running 2 WAN links through the same router and have been have
session
> disconnect problems recently. I have been
I am running 2 WAN links through the same router and have been have session
disconnect problems recently. I have been running several ping tests across
both of the links (128K FR and 512K Leased line) and they are both showing
response times fluctuating from 30ms to 1400ms (No dropped packets). I
The question is pretty broad. On our enterprise networks we use four
different products to determine latency and packet loss.
On the local and wide area we utilize snmp and rmon to gather statistics,
but that does not always give you a complete picture, especially if your
data traverses public
I test the mrtg-ping-probe and i found is a nice tool.
I am now getting Latency and Packet-loss statistics
Thanks for your suggestions
__
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Yahoo! Tax Center - online filing with TurboTax
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Message Posted at
Go for Cisco Works 2000
-Original Message-
From: Michalis Palis [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 03, 2002 9:09 AM
To: [EMAIL PROTECTED]
Subject: Network latency [7:40295]
Dear all
I am looking for a goot tool to measure network
latence and packet loss. Any idea
Solarwinds Engineer's Edition (http://www.solarwinds.net/tools.htm) also has
their Network Monitor.
or, if you want to go hog wild and have the budget for it, InfoVista
(http://www.infovista.com/products/products.asp) would do the trick.
IV supports proxy pings between routers, will collect all m
Try Cisco Info Center/ISM's
Very cool stuff...
- Original Message -
From: "Michalis Palis"
To:
Sent: Wednesday, April 03, 2002 1:08 AM
Subject: Network latency [7:40295]
> Dear all
>
> I am looking for a goot tool to measure network
> latenc
MRTG with PING PROBE SCRIPTS.
Joseph Brunner
ASN 21572
MortgageIT MITLending
New York, NY 10038
(212) 651 - 7695 Voice
-Original Message-
From: Mike Bernico [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 03, 2002 10:06 AM
To: [EMAIL PROTECTED]
Subject: RE: Network latency [7:40295
e Bernico [EMAIL PROTECTED]
>Illinois Century Network http://www.illinois.net
>(217) 557-6555
>
>
> > -Original Message-
> > From: Michalis Palis [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, April 03, 2002 12:09 AM
> > To: [EMAI
t: Wednesday, April 03, 2002 12:09 AM
> To: [EMAIL PROTECTED]
> Subject: Network latency [7:40295]
>
>
> Dear all
>
> I am looking for a goot tool to measure network
> latence and packet loss. Any idea?
>
>
ginal Message-
> From: Michalis Palis [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, April 03, 2002 12:09 AM
> To: [EMAIL PROTECTED]
> Subject: Network latency [7:40295]
>
>
> Dear all
>
> I am looking for a goot tool to measure net
Dear all
I am looking for a goot tool to measure network
latence and packet loss. Any idea?
__
Do You Yahoo!?
Yahoo! Tax Center - online filing with TurboTax
http://taxes.yahoo.com/
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7
It may seem obvious but double check the subnet masks on the servers.
- Original Message -
From: "Mason"
To:
Sent: Friday, March 15, 2002 12:17 AM
Subject: Re: Latency in Telnet, intervlan routing [7:38187]
> Ok, so here is the status:
> Sniffer traces show that th
That was a reverse name lookup problem... fixed.
Thanks... you guys are rocking !
""Tauseef Nagi"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> In the Unix servers, please check for /etc/resolve.conf and see if name
> servers are configured correctly. If these Unix servers don
In the Unix servers, please check for /etc/resolve.conf and see if name
servers are configured correctly. If these Unix servers don't require name
services, please add just their ip addresses to /etc/hosts file and then
check for response time. This is "reverse nam lookup" issue.
Thanks.
Tauseef
Are the telnet client/s in the /etc/hosts file on the UNIX server? I have
had similar problems, placing the clients IP address in the /etc/hosts file
resolved the latency.
KM
>From: "Francisco Sedano/Inf-Pronet"
>Reply-To: "Francisco Sedano/Inf-Pronet"
>To: [
.
"Mason"
cc:
Enviado por: Asunto: Re: Latency in
Telnet, intervlan routing [7:38187]
nobody@groupstudy
Ok, so here is the status:
Sniffer traces show that the latency occurs when I do telnet (regardless
using IP or Netbios name) to three specific Unix servers.
If I do telnet to another device on the same subnet, I have no problems.
That eliminates any routing issues, correct ? But what the three
: Tauseef Nagi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 13, 2002 9:22 PM
To: [EMAIL PROTECTED]
Subject: Re: Latency in Telnet, intervlan routing [7:38187]
Here are few things you could look into,
1) Is this a new config.?
2) Did it ever work before? if yes, what changed?
3) Assuming that
]]
Sent: Wednesday, March 13, 2002 9:36 PM
To: [EMAIL PROTECTED]
Subject: Latency in Telnet, intervlan routing [7:38187]
I do Telnet from a client on VLAN1 and I reach the server just
fine. VLAN1 is where the server is also connected to.
I do Telnet from any other VLAN: Telnet takes a long time
Here are few things you could look into,
1) Is this a new config.?
2) Did it ever work before? if yes, what changed?
3) Assuming that routing is setup correctly on the Cat5K routing module (if
this is being used),
(a) do you have the right static routing setup on the server to
respond to
I do Telnet from a client on VLAN1 and I reach the server just
fine. VLAN1 is where the server is also connected to.
I do Telnet from any other VLAN: Telnet takes a long time, then it times
out.
That tells me it is something in the InterVLAN routing. What would be the
next step to troubleshoot t
Any wirii over there? Maybe the link is flooded with MS worms.
""Hotmail 2"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Is anyone aware of increased latency from Korean networks into the US or
v/v
> lately?
> My users in Korea are compl
Is anyone aware of increased latency from Korean networks into the US or v/v
lately?
My users in Korea are complaining of slow page loads.Traces from Chicago, IL
US to Korea show a speed bump between the last hop in the US and the next hop
in Korea.(65ms to Palo Alto CA. - 244ms from Palo Alto to
Is anyone aware of increased latency from Korean networks into the US or
v/v lately?
My users in Korea are complaining of slow page loads.Traces from
Chicago, IL US to Korea show a speed bump between the last hop in the US
and the next hop in Korea.(65ms to Palo Alto CA. - 244ms from Palo Alto
to
Is anyone aware of increased latency from Korean networks into the US or v/v
lately?
My users in Korea are complaining of slow page loads.Traces from Chicago, IL
US to Korea show a speed bump between the last hop in the US and the next hop
in Korea.(65ms to Palo Alto CA. - 244ms from Palo Alto to
pix...
any help much appreciated.
thanks,
Ciaron
- Original Message -
From: Paul Jin
To:
Sent: Thursday, November 15, 2001 8:47 PM
Subject: Re: Latency on the local access circuit [7:26263]
> VoIP Guy wrote:
> >
> > If traffic shaping, do both sides match?Are you do
VoIP Guy wrote:
>
> If traffic shaping, do both sides match?Are you doing any
> FRF.12
> fragmentation? Are you sure the traffic shaping paramaters
> are OK? I have
> a feeling this is it. Make sure both sides match.
>
>
The TS statements both match on both ends.
We have the same typ
If traffic shaping, do both sides match?Are you doing any FRF.12
fragmentation? Are you sure the traffic shaping paramaters are OK? I have
a feeling this is it. Make sure both sides match.
""Paul Jin"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi Alex,
>
> This sit
Hi Alex,
This site has another router connection back to the hub so this PVC is not
being used at this moment except for testing.
I have no fecn/becns. I have the CIR set at 128K on the network portion.
No discards within the cloud. in fact, within the network, it is
around 70 ms between stra
Paul,
I have a feeling that you might have tried the below, but just for a
suggestion:
Is the ping time always high, or does it vary depending on the time of the
day? If it's the latter, it might be a congestion problem, and you can check
for the presence of FECN's on the frame switch. This happ
Hi All,
I am having issues with a remote router we turned up overseas..
The router is working fine and the local access circuit test
from the local telco comes back clean but,
I am getting ping times on a normal 100 byte packet of around 170ms -
220ms. Similar type of connections all fall with
eb site with white papers, AKA
ip masquerading for linux
ipfilter for openbsd, freebsd, netbsd, solaris, and hp-ux
ipfw for freebsd
(yeah I know you said no wise cracks, but hey, I could not resist!).
At 12:06 AM 9/14/01 -0400, Circusnuts wrote:
>Has anyone come across performance specs,
Has anyone come across performance specs, statistics, or costs (latency or
otherwise) for NAT & PAT services ???
Thanks
Phil
PS- no wise-acre's please, I know all about www.Cisco.com :o)
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=
ng tweaked.
-Original Message-
From: Cisco Chic [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 13, 2001 10:32 AM
To: [EMAIL PROTECTED]
Subject: IPSec Latency [7:15874]
Hi All,
I was wondering if anyone has any information or sites
which talk about how to tweak (if this can be done)
IP
Hi All,
I was wondering if anyone has any information or sites
which talk about how to tweak (if this can be done)
IPSec tunnls (via keepalives) from a dial up client to
a VPN5008?
We have a latency of around 800 milliseconds on a
network and we are trying to determine what the
maximum delay
es (DATA 1) was
taking errors. Prior to finding this information I had already begun
modifying our router's configs in an effort to improve performance. As I
have stated in my previous post, I had tried queueing and traffic shaping.
Once I had enabled traffic shaping I monitored the laten
America
customer- good luck :o)
All the best
Phil
- Original Message -
From: "John Neiberger"
To:
Sent: Tuesday, August 07, 2001 6:41 PM
Subject: Re: Need some advice on a Frame Relay Latency issue [7:15146]
> If you are seeing inconsistent and unusually long ping respons
If you are seeing inconsistent and unusually long ping response times
between two routers connected to a frame relay network--especially if
you're not seeing physical errors--it's probably the frame relay
provider. This exact situation has happened at least three times in the
last year with Qwest
First - I believe that ICMP replies are a low priority, so they may not be
an accurate representation of latency.
Second - Latency is primarily a product of distance. In theory, if the line
distance is the same, latency should be at least relatively close given a
direct line vs. frame. Of
Hello everyone.
I have a peculiar problem with one of my company's FR circuits. We have
been trying to troubleshoot this issue ever since we purchased FR to replace
point-to-point HDLC. This circuit has a 256K CIR and 512K port speed.
Bandwidth utilization is low and never approaches the CI
__
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Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=14566&t=14566
---
the result of this effort won't be a single number.
Nor will forwarding performance (e.g., RFC 2544) produce a single
number, much less considering QoS enforcement, filtering, etc.
Just throwing out comments about "latency" as if it is the be-all
end-all doesn't clarify much. Th
Raveendra Hegde
_
IMPORTANT NOTICES:
This message is intended only for the addressee. Please notify the
sender by e-mail if you are not the intended recipient. If you are not the
intended recipient, you may not
u need to cont ur telco they are dropping ur traffic
is there too much load on line?
-Original Message-
From: Eric Mwambaji [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 19, 2001 11:23 PM
To: Farhan Ahmed
Subject: RE: Latency on ATM interface - Any ideas [7:12978]
ping
Protocol [ip
send me in using different MTU sizes in extended pings
-Original Message-
From: Eric Mwambaji [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 19, 2001 9:51 PM
To: [EMAIL PROTECTED]
Subject: Latency on ATM interface - Any ideas [7:12978]
I experience intermittent increased latency on
can u send sh int output
uncleared and after clearing counters...
-Original Message-
From: Eric Mwambaji [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 19, 2001 9:51 PM
To: [EMAIL PROTECTED]
Subject: Latency on ATM interface - Any ideas [7:12978]
I experience intermittent increased
I experience intermittent increased latency on
extended pings from a 3662 to another 3662 router
accross my lab WAN. The ping starts off with replies
at 32 ms but once in a while the reply goes over
600ms. ie the replies are not constant. Removing
the vbr-nrt from my config results in faster
: How to create latency? [7:7313]
> Is a tool that runs on top of Linux for doing just this. Although it most
> likely will be easiest to do via Ethernet interfaces.
>
> David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com
> - Original Message -
> From: "Rashid L
ubject: Re: How to create latency? [7:7313]
> Do you thing I could a similare thing with a LAN Analyzer, generating a
> whole load of traffic and directing it over the serial link.
> I haven't tried this, just wondering.
> If I overloaded the link in this way, I would expect packet
avid C Prall [mailto:[EMAIL PROTECTED]]
Sent: Saturday, June 09, 2001 7:04 PM
To: [EMAIL PROTECTED]
Subject: Re: How to create latency? [7:7313]
I used an Adtech SX12 to do exactly this. A little more expensive then
back-to-back cables. But well worth the cost if you need to put together new
applicat
Do you thing I could a similare thing with a LAN Analyzer, generating a
whole load of traffic and directing it over the serial link.
I haven't tried this, just wondering.
If I overloaded the link in this way, I would expect packet drops and
retransmissions, hence I would expect some latency
PROTECTED] http://dcp.dcptech.com
- Original Message -
From: "Alex Collins"
To:
Sent: Wednesday, June 06, 2001 6:12 AM
Subject: How to create latency? [7:7313]
> Anyone know of a cheap way to generate latency over a back to back 2621
> serial configuration?
> I would like
Have you tried increasing the MTU's or decreasing the clockrate on the DCE
interface ???
Phil
- Original Message -
From: Alex Collins
To:
Sent: Wednesday, June 06, 2001 6:12 AM
Subject: How to create latency? [7:7313]
> Anyone know of a cheap way to generate latency over a
Anyone know of a cheap way to generate latency over a back to back 2621
serial configuration?
I would like to test the effect of controllable latency on some apps without
having to stick a box a thousand miles away.
Makes a change to actually request latency in a network anyway!
Alex
cables you
use now). The bandwidth and latency are changed through dip switches on the
front panel of the RDS.
The only downside we found was the bandwidth speed that tops out at
2.048 Mbps. Adtech has a more advanced product that can scale up but the
price difference is hefty.
We have been very
IL PROTECTED]
> Subject: Re: latency in a lab scenario [7:6453]
>
>
> There was an earlier post that described East Coast Datacom's
> Router Delay
> Simulator. We have been using the RDS in our lab to provide
> latency and
> bandwidth constraints between endpoints. The
There was an earlier post that described East Coast Datacom's Router Delay
Simulator. We have been using the RDS in our lab to provide latency and
bandwidth constraints between endpoints. The box has worked great and the
pricing wasn't bad.
http://www.ecdata.com/r
Several companies make boxes that create latency in a serial link. The
really neat ones can also induce jitter, packet drops, and other likely line
faults. An affordable one is:
http://www.ecdata.com/rds/rds.htm
FWIW The manufacturer sells at list price. Some time after inquiring with
them an
If your routers are connected serially, lower the clockrate on the DCE
interface to the desired speed. If you want to introduce variable
latency, I'd have to think about it for a bit. A simple way would be to
do FTP transfers or large extended pings from time to time to simulate
tr
Hi,
I'm looking for ideas to induce latency in a lab scenario.
More specifically to simulate latency between nodes in Seattle,
Los Angeles, and Baltimore. Any help would be appreciated.
Thanks,
Francis
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=64
dit the file or open it with notepad to see my results.
-Original Message-
From: Dan West [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 28, 2001 3:44 PM
To: NetEng; [EMAIL PROTECTED]
Subject: Re: Latency Program
On most Unix hosts you could run the following command
from a
On most Unix hosts you could run the following command
from a shell prompt.
> ping generic.host.com >> ping.results
<> hit to break the ping. Now, "more"
the new file ping.results,
> more ping.results
to see what the latency results are!
Note that on some flavo
Does anyone know of a program that will ping a host and record the latency?
Multiple links would be a +. Thanks
_
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