[c-nsp] Outbound drops on 6748

2012-01-28 Thread Dean Smith
We have some web security appliances connected via 1Gb/s copper to 6748 Line cards in a Cat 6513 with Sup720. The appliance manufacturer assures us the appliances can cope with traffic well above 800Mb/s (The traffic is always equal in both directions) We have previously seen traffic levels

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Matthew Huff
[mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Dean Smith Sent: Saturday, January 28, 2012 6:40 AM To: cisco-nsp@puck.nether.net Subject: [c-nsp] Outbound drops on 6748 We have some web security appliances connected via 1Gb/s copper to 6748 Line cards in a Cat 6513 with Sup720

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Robert Hass
On Sat, Jan 28, 2012 at 4:45 PM, Matthew Huff mh...@ox.com wrote: You are likely hitting microbursts. The traffic levels you state are measured over an interval (30 seconds minimum probably). During peak activity you can easy overrun the buffers on the 6748 if your upstream data is coming

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Matthew Huff
, January 28, 2012 12:39 PM To: cisco-nsp@puck.nether.net Cc: Matthew Huff Subject: Re: [c-nsp] Outbound drops on 6748 On Sat, Jan 28, 2012 at 4:45 PM, Matthew Huff mh...@ox.com wrote: You are likely hitting microbursts. The traffic levels you state are measured over an interval (30

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Robert Hass
On Sat, Jan 28, 2012 at 6:42 PM, Matthew Huff mh...@ox.com wrote: Cisco Nexus 3000 Series switches. They came out to compete with Arista in the HFT world, but are useful anywhere latency and/or bursting is an issue: http://www.cisco.com/en/US/products/ps11541/index.html Nexus 3000 have 9MB

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Matthew Huff
at Arista. -Original Message- From: Robert Hass [mailto:robh...@gmail.com] Sent: Saturday, January 28, 2012 12:52 PM To: Matthew Huff Cc: cisco-nsp@puck.nether.net Subject: Re: [c-nsp] Outbound drops on 6748 On Sat, Jan 28, 2012 at 6:42 PM, Matthew Huff mh...@ox.com wrote: Cisco

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Dean Smith
Message- From: Matthew Huff [mailto:mh...@ox.com] Sent: 28 January 2012 15:45 To: 'Dean Smith'; 'cisco-nsp@puck.nether.net' Subject: RE: [c-nsp] Outbound drops on 6748 What is the type of data? Is it bursty? Is the data coming from an bigger pipe upstream? You are likely hitting microbursts

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Matthew Huff
Smith [mailto:d...@eatworms.org.uk] Sent: Saturday, January 28, 2012 2:27 PM To: Matthew Huff; cisco-nsp@puck.nether.net Subject: RE: [c-nsp] Outbound drops on 6748 Its user web browsing (no multicast) and the flow is :- Clients - ACE (load Balance)- 6748 - Appliance - 6748 - 6708

Re: [c-nsp] Outbound drops on 6748

2012-01-28 Thread Dean Smith
Smith [mailto:d...@eatworms.org.uk] Sent: Saturday, January 28, 2012 2:27 PM To: Matthew Huff; cisco-nsp@puck.nether.net Subject: RE: [c-nsp] Outbound drops on 6748 Its user web browsing (no multicast) and the flow is :- Clients - ACE (load Balance)- 6748 - Appliance - 6748 - 6708