Impact on Packet delay and Jitter due to IPSec

We are planning to use IPSec between two 7604 routers. And IPSec actually adds more overhead to the packet there will be impact on the traffic. We would like to know the impact on Packet delay and Jitter due to IPsec on 7604 or 7606 routers.

Hi Jger, is this for something like a message of the day? What are you using UDP 17 for?  UDP is still best effort which the switch may not necessarily be faulted for. You may try something such as turning off spanning tree on the ports to see if that can help somehow.
-Tom
Please mark answered for helpful posts

Similar Messages

  • Packet-Delay and Reordering with a SG200-18-Switch

    Sometimes we see an issue that the switch delays a fragment up to one millisecond. And the delay may cause reordering...
    We are using a "SG200-18 18-Port Gigabit Smart Switch" with the following Version:
    Software Information
    Firmware Version (Active Image):    1.3.2.02
    Firmware MD5 Checksum (Active Image):    4e5ee4d4fcc4f6ee86f4cf39e015e362
    Boot Version:    1.1.0.6
    Boot MD5 Checksum:    01eac6cfe0267f6c28a302c0082b7086
    Here is an extract from capture-files showing the issue. You see that the red-marked fragment is in order when it enters the switch. When it leaves the switch the red-marked fragment is delayed and reordered:
    Capture on the Interface "before" the switch:
    10:18:52.348867 IP (tos 0x0, ttl  15, id 49508, offset 2960, flags [none], proto: UDP (17), length: 306) 192.168.20.13 > 229.2.1.3: udp
    10:18:52.348868 IP (tos 0x0, ttl  15, id 49509, offset 0, flags [+], proto: UDP (17), length: 1500) 192.168.20.13.35917 > 229.2.1.3.5503: UDP, length 3238
    10:18:52.348871 IP (tos 0x0, ttl  15, id 49509, offset 1480, flags [+], proto: UDP (17), length: 1500) 192.168.20.13 > 229.2.1.3: udp
    10:18:52.348873 IP (tos 0x0, ttl  15, id 49509, offset 2960, flags [none], proto: UDP (17), length: 306) 192.168.20.13 > 229.2.1.3: udp
    10:18:52.348875 IP (tos 0x0, ttl  15, id 49510, offset 0, flags [+], proto: UDP (17), length: 1500) 192.168.20.13.35917 > 229.2.1.3.5503: UDP, length 3238
    Capture on the Interface "after" the switch:
    09:37:42.438678 IP (tos 0x0, ttl  15, id 49508, offset 2960, flags [none], proto: UDP (17), length: 306) 192.168.20.13 > 229.2.1.3: udp
    09:37:42.438680 IP (tos 0x0, ttl  15, id 49509, offset 0, flags [+], proto: UDP (17), length: 1500) 192.168.20.13.35917 > 229.2.1.3.5503: UDP, length 3238
    09:37:42.438681 IP (tos 0x0, ttl  15, id 49509, offset 2960, flags [none], proto: UDP (17), length: 306) 192.168.20.13 > 229.2.1.3: udp
    09:37:42.438727 IP (tos 0x0, ttl  15, id 49510, offset 0, flags [+], proto: UDP (17), length: 1500) 192.168.20.13.35917 > 229.2.1.3.5503: UDP, length 3238
    09:37:42.439077 IP (tos 0x0, ttl  15, id 49522, offset 2960, flags [none], proto: UDP (17), length: 306) 192.168.20.13 > 229.2.1.3: udp
    09:37:42.439313 IP (tos 0x0, ttl  15, id 49509, offset 1480, flags [+], proto: UDP (17), length: 1500) 192.168.20.13 > 229.2.1.3: udp
    09:37:42.458090 IP (tos 0x0, ttl  15, id 49523, offset 0, flags [+], proto: UDP (17), length: 1500) 192.168.20.13.35917 > 229.2.1.3.5503: UDP, length 3238
    We looked in the configuration of the switch but we can't find something, so we assume that it might be a bug in the switch...
    It is also remarkable that sometimes the same fragment is delayed by two  different Cisco switches in the setup; so it may be be something about  the content of the packet...
    Any suggestions, what it can be? Thanks in advance!

    Hi Jger, is this for something like a message of the day? What are you using UDP 17 for?  UDP is still best effort which the switch may not necessarily be faulted for. You may try something such as turning off spanning tree on the ports to see if that can help somehow.
    -Tom
    Please mark answered for helpful posts

  • Monitoring RTP Data / Packet Loss / Packet Delay

    hiya folks
    what is everyone using to monitor their incoming and outgoing data in terms of packet delay and loss and myabe even load on the CPU??
    thanking anyone in advance for any help you provide

    i managed to do this now without the use of an external program, once you have finished transmitting the stream.
    you can run the following bit of code on thr rtp manager which shows you the following
    GlobalTransmissionStats stats;
    for (int i = 0; i < rtpMgrs.length; i++) {
    stats = rtpMgrs.getGlobalTransmissionStats ();
    System.out.println( "The total number of RTP packets transmitted :" + stats.getRTPSent() );
    System.out.println( "The total number of bytes sent :" + stats.getBytesSent() );
    System.out.println( "The total number of RTCP packets sent :" + stats.getRTCPSent() );
    System.out.println( "The total number of local collisions :" + stats.getLocalColls() );
    System.out.println( "The total number of remote collisions :" + stats.getRemoteColls() );
    System.out.println( "The number of packets that failed to get transmitted :" + stats.getTransmitFailed() );
              rtpMgrs[i].removeTargets( "Session ended.");
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  • Tons of packet loss and Verizon techs say its fine

    As you can see from the below test ran from dslreports.com, I'm having a lot of packet loss issues. This has been going on for nearly two weeks now and tech support has been more of an annoyance than a help upto this point. I've talked to tech support at least 5 times only to be told my line test comes back fine, its normal, reset your modem, delete your cookies, is your pc old, etc. I've even had them vpn itno my system and run pings and they see the packet loss and all the issues I'm having first hand and still  say it isn't a big deal. On more than one occasion I've had my modem data light just flashing and had to reset the modem and they suggest I just buy a new modem. Seriously, is this how bad tech support has gotten?
    I've shown them test after test after test and the all come back pretty much the same... The thing is its been perfect for years and suddenly this and its like tech support wants to sweep it under the rug or something.  I've had it suggested to me the packet loss and high pings when I'm not getting the packet loss is due to my pool being over populated.  Like I'm ow getting ping averages of 250-300 instead of 30-40s, again when its not all timing out.
    I've posted over on the dslreports forums asking about this as well as in the Verizon specific forums to the techs all with 0 replies from anything and was told to come here and see if anyone would be able to help.
    I really not bother with the hassle of switching isps as ive been a loyal Verizon dsl customer for well over 5 years but at this point just knowing how bad tech support is alone might make me want to.
    Can anyone offer any insight on what else to do or help on this possibly?
    Thanks.
    Test Loss Min
    Latency Avg
    Latency Max
    Latency Pass
    Fail Simple ping loss check
    10secs of 40byte packets 2 per second 5% loss 137ms 141ms 148ms
    warn low bandwidth stream
    10secs of 56k/bit ping stream 512byte packets 6% loss 142ms 147ms 154ms
    warn medium bandwidth stream
    10secs of 128k/bit ping stream 512byte packets 2% loss 140ms 147ms 173ms
    pass your first hop ping
    stream of 40byte pings to 130.81.44.101 4% loss 118ms You are 19ms
    to your first hop
    pass Ping plot:
    Ping plot:
    From East Coast - USA to YOU Hop Host LOSS Rcv Sent Best Avg Worst 0 ae-2.bb-b.slr.lxa.us.oneandone.net 0% 60 60 0.46 2.29 59.98 1 te-2-1.bb-b.ms.mkc.us.oneandone.net 0% 60 60 0.92 1.89 36.10 2 64.209.105.233 0% 60 60 13.97 41.38 948.69 3 0.xe-8-2-0.BR3.CHI13.ALTER.NET 0% 60 60 26.13 30.80 80.28 4 0.ae3.CHI01-BB-RTR1.verizon-gni.NET 0% 60 60 26.49 27.84 88.62 5 P15-3.RONKVA-LCR-01.verizon-gni.net 0% 60 60 54.25 55.01 56.32 6 P0-0.RONKVA-RONKVALK-ERXG02.verizon-gni.net 0% 60 60 116.80 121.05 130.35 7 pool-71-171-24-94.nwrknj.east.verizon.net 14% 52 60 142.49 147.61 169.10 (fail) From West Coast - USA to YOU Hop Host LOSS Rcv Sent Best Avg Worst 0 unknown.Level3.net 2% 59 60 0.64 16.67 150.86 1 ae-4-99.edge1.SanJose3.Level3.net 4% 58 60 1.15 5.12 59.35 2 4.68.63.146 0% 60 60 1.25 3.31 55.27 3 0.ae3.XL3.SJC7.ALTER.NET 0% 60 60 1.25 1.68 9.80 4 0.ge-6-3-0.XT1.DCA6.ALTER.NET 0% 60 60 75.58 77.85 108.89 5 0.so-4-0-0.RES-BB-RTR1.verizon-gni.net 0% 60 60 75.52 80.78 136.25 6 P15-3.RONKVA-LCR-01.verizon-gni.net 0% 60 60 90.25 91.97 94.08 7 P0-0.RONKVA-RONKVALK-ERXG02.verizon-gni.net 2% 59 60 154.03 159.68 164.42 8 pool-71-171-24-94.nwrknj.east.verizon.net 4% 58 60 175.74 183.27 187.00 (fail)

    As you can see from the below test ran from dslreports.com, I'm having a lot of packet loss issues. This has been going on for nearly two weeks now and tech support has been more of an annoyance than a help upto this point. I've talked to tech support at least 5 times only to be told my line test comes back fine, its normal, reset your modem, delete your cookies, is your pc old, etc. I've even had them vpn itno my system and run pings and they see the packet loss and all the issues I'm having first hand and still  say it isn't a big deal. On more than one occasion I've had my modem data light just flashing and had to reset the modem and they suggest I just buy a new modem. Seriously, is this how bad tech support has gotten?
    I've shown them test after test after test and the all come back pretty much the same... The thing is its been perfect for years and suddenly this and its like tech support wants to sweep it under the rug or something.  I've had it suggested to me the packet loss and high pings when I'm not getting the packet loss is due to my pool being over populated.  Like I'm ow getting ping averages of 250-300 instead of 30-40s, again when its not all timing out.
    I've posted over on the dslreports forums asking about this as well as in the Verizon specific forums to the techs all with 0 replies from anything and was told to come here and see if anyone would be able to help.
    I really not bother with the hassle of switching isps as ive been a loyal Verizon dsl customer for well over 5 years but at this point just knowing how bad tech support is alone might make me want to.
    Can anyone offer any insight on what else to do or help on this possibly?
    Thanks.
    Test Loss Min
    Latency Avg
    Latency Max
    Latency Pass
    Fail Simple ping loss check
    10secs of 40byte packets 2 per second 5% loss 137ms 141ms 148ms
    warn low bandwidth stream
    10secs of 56k/bit ping stream 512byte packets 6% loss 142ms 147ms 154ms
    warn medium bandwidth stream
    10secs of 128k/bit ping stream 512byte packets 2% loss 140ms 147ms 173ms
    pass your first hop ping
    stream of 40byte pings to 130.81.44.101 4% loss 118ms You are 19ms
    to your first hop
    pass Ping plot:
    Ping plot:
    From East Coast - USA to YOU Hop Host LOSS Rcv Sent Best Avg Worst 0 ae-2.bb-b.slr.lxa.us.oneandone.net 0% 60 60 0.46 2.29 59.98 1 te-2-1.bb-b.ms.mkc.us.oneandone.net 0% 60 60 0.92 1.89 36.10 2 64.209.105.233 0% 60 60 13.97 41.38 948.69 3 0.xe-8-2-0.BR3.CHI13.ALTER.NET 0% 60 60 26.13 30.80 80.28 4 0.ae3.CHI01-BB-RTR1.verizon-gni.NET 0% 60 60 26.49 27.84 88.62 5 P15-3.RONKVA-LCR-01.verizon-gni.net 0% 60 60 54.25 55.01 56.32 6 P0-0.RONKVA-RONKVALK-ERXG02.verizon-gni.net 0% 60 60 116.80 121.05 130.35 7 pool-71-171-24-94.nwrknj.east.verizon.net 14% 52 60 142.49 147.61 169.10 (fail) From West Coast - USA to YOU Hop Host LOSS Rcv Sent Best Avg Worst 0 unknown.Level3.net 2% 59 60 0.64 16.67 150.86 1 ae-4-99.edge1.SanJose3.Level3.net 4% 58 60 1.15 5.12 59.35 2 4.68.63.146 0% 60 60 1.25 3.31 55.27 3 0.ae3.XL3.SJC7.ALTER.NET 0% 60 60 1.25 1.68 9.80 4 0.ge-6-3-0.XT1.DCA6.ALTER.NET 0% 60 60 75.58 77.85 108.89 5 0.so-4-0-0.RES-BB-RTR1.verizon-gni.net 0% 60 60 75.52 80.78 136.25 6 P15-3.RONKVA-LCR-01.verizon-gni.net 0% 60 60 90.25 91.97 94.08 7 P0-0.RONKVA-RONKVALK-ERXG02.verizon-gni.net 2% 59 60 154.03 159.68 164.42 8 pool-71-171-24-94.nwrknj.east.verizon.net 4% 58 60 175.74 183.27 187.00 (fail)

  • Quality of Service and Jitter issues

    I am having poor quality of service (36%) and Jitter issues (36ms).  I called Verizon Fios technical support and was told that my connection is fine and that it must be a vendor issue.  Only vendor I'm having an issue with is Verizon.  If I can't get someone from Verizon that knows what QoS and Jitter is on the phone to help me troubleshoot this issue I'm going to have to cancel my service and find a provider that has someone technical providing tech support.

    Upstream jitter
     35.7 ms
    Downstream jitter
     6.0 ms
    Upstream packet loss
     0.8 %
    Downstream packet loss
     0.0 %
    Upstream packet order
     100.0 %
    Downstream packet order
     100.0 %
    Packet discards
     5.1 %
    MOS
     3.4

  • Incoming NCP packets have been dropped due to IP fragmentati

    I have installed a new Netware 6.5 SP6 server at a remote location.
    There is BorderManager server already at this site. The new server will eventually replace this server and is configured with a PRIVATE and PUBLIC NIC card.
    The remote location connects back to our main office via a Bordermanager VPN.
    Does anyone know what might be causing the errors below ?
    They started when this server came online and the messages are showing up on all my servers across the WAN.
    If I shutdown the new server, the error messages go away.
    3-27-2008 11:39:35 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.
    3-27-2008 11:40:43 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.
    3-27-2008 11:41:51 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.
    3-27-2008 11:43:03 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.
    3-27-2008 11:44:09 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.
    3-27-2008 11:45:24 am: NCPIP-6.2-0
    Severity = 1 Locus = 14 Class = 9
    Incoming NCP packets have been dropped due to IP fragmentation.
    NCP packets received are being fragmented by an IP router.

    Originally Posted by mrosen
    Hi,
    cadd wrote:
    > >
    > > Server #2 was added yesterday. It is intended to replace Server #1.
    > > It has Border Manager 3.9 installed, but not loaded. It has two NICs,
    > > one on the Private network, and one to the Public network (Internet).
    > > Server #2 was setup at corporate HQ on the HQ subnet. I followed TIDs
    > > 10067853 and 10088753 to change the IP numbers before the server was
    > > sent to the remote office.
    > >
    Ok, I have a few questions here. First, what exactly is the VPN? You
    don't explicitly say the site-to-site VPN is a Bordermanager VPN!?
    *If* it is a BM VPN, check if "ALWAYS ALLOW IP FRAGMENTATION" is set to
    on on any of the servers. That setting should really never be enabled.
    CU,
    Massimo Rosen
    Novell Product Support Forum Sysop
    No emails please!
    Untitled Document
    Massimo,
    It is a BorderManager Site to Site VPN.
    ALWAYS ALLOW IP FRAGMENTATION was set to ON at both servers running the site-to-site VPN. It was also set to ON for the new server I just placed.
    I turned all of them to OFF.
    This seems to have stopped the NCP messages. I was receiving a message about once per minute, and now 15 minutes have gone by with no messages.
    For some reason, I added the ALWAYS ALLOW IP FRAGMENTATION = ON to both Bordermanager servers when they were installed several years ago. I can't remember the exact reason they were set to ON, but there was a reason (at the time).
    I will set them to OFF and see if it has any negative effects.
    Thank you so much (everyone) for the help.

  • Packet filtering and traffic shaping during peak h...

    I play the online game World of Tanks and an currently exteriancing severe lagg and disconnects, the problem does not appear to be with the game/service provider but with BT, i need to know does BT  use "packet filtering" and "traffic shaping" during peak hours and if so why has it suddenly started.
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    It's absolutely horrible. i turned off wifi all other devices and every other open program just to reduce my latency for 120ms to 80ms.
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    It would be absolutely horrible if they have started throttling worldoftanks.eu servers. Phone support is no help all they torld me to do is restart my router
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    Willy, the procdedure you describe works perfectly for AppleTV G1. In fact, I frequently play DTS music discs ripped to my iTunes library as Apple Lossless (ALAC) and synched to the ATV. What happens is that, as far as iTunes and the ATV are concerned, a conventional stereo 16/44 audio file is being played; however my reciever detects the DTS data stream, and instead of outputting static, it decodes the 5.1 channels correctly. This process parallels the way DTS discs were designed to be played back: a conventional CD player is connceted, via digital out, to a DTS-aware reciever/pre-amp and the two channels of static are recognized as 6 channels of DTS-encoded audio.
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  • Tool like PathPing that can pinpoint packet loss and can be configured to run for 24 hours

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    Thanks for your answer. I already downloaded winmtr.
    Regards
    Simon
    From:
    namohamm
    To:
    Simon Vyrdal/Sweden/Contr/IBM@IBMSE
    Date:
    2010-12-30 08:29
    Subject:
    New message: "Tool like PathPing that can pinpoint
    packet loss and can be configured to run for 24 hours"
    simonvyrdal,
    A new message was posted in the Discussion thread "Tool like PathPing that
    can pinpoint packet loss and can be configured to run for 24 hours":
    https://supportforums.cisco.com/message/3258861#3258861
    Author : Nael Mohammad
    Profile : https://supportforums.cisco.com/people/namohamm
    Message:

  • What is 'net due date'and 'discount due date'

    Hi
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    Thanks in advance
    Devi

    Net Due date  is the date on which the actual payment is due. it is picked up from payment terms.
    Discount due date is the date from which discount is calculated.
    Usually we allow discount if payment is before a stipulated period.
    Regards,
    Harmees

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