Jumbo Frame on 1 Gig network

Similar Questions

• Validate the design of the network 2 x 10 GbE - NAS only 4 x 1 GB (jumbo frame)

  Dear Sir

  I have a few questions about the design of our new vSphere environment network.

  Detail:

  -Enterprise license

  -vSphere 5 servers (HP DL360p) with each:

  128 GB memory

  2 x Intel E5-2665 (8 cores)

  2 x 10 GbE (HP FlexFabric 554FLR-SFP +)

  -Environment NAS is connected via a LACP of 4 x 1 GB (no dedicated storage network)

  -Network environment is built on Juniper EX4200 is (virtual stack)

  Should / can use frames? :-)

  (a) servers, VMware will have 10 GbE and the storage network is only 4 x 1 GB?

  (b) this will give no problem for end-user connections that connect to the server VM

  running on the infrastructure as the file servers...

  Everything will not use frames but the will of the end user of PC, or is this not a problem?

  Is the picture below to go to the best?

  GRZ,

  Geert

  Honestly, there are a lot of discussions on when to activate the frames.  In my opinion I do not activate initially jumbo frames and watch the traffic.  If the backen was totally 10 GbE or FC, I would definietly enable Jumbo.  If necessary, then I would allow him.  Frames Jumbo will not affect the user who connects to the virtual computer, remember that they need to connect to the ESXi and not the current storage unit.

• Airport Extreme Gigabit Ethernet and Jumbo frames

  Hi all.

  Can anyone support me kindly about Gigabit Ethernet & Jumbo Frames with Airport Express?

  I currently have and use a 5th generation Airport Express and you want to buy the QNAP TS - 453 Pro NAS. In any implementation of storage NAS, Gigabit Ethernet, the frames extended as matching Ethernet card well, are all very important to achieve broadband performance, so my questions are:

  5th generation Airport Express

  
  

  • Are the NETWORK Gigabit NIC Ethernet card?
  • It also works with extended frames (QNAP NAS supports 4074, 9000 and 7418 bytes for MTU)?
  • QNAP can trunk NIC (if more then one) with the following options:
    • IEEE 802.3ad (dynamic link aggregation)
    • Balance-tlb (Adaptive Transmit Load Balancing)
    • Balance-alb (Adaptive Load Balancing)
    • others (mainly for failover)

  Is 5th generation Airport Express enough or should I think about moving to the 6th generation?

  Thank you.

  You mix up the terminology... Express and Extreme are totally different.

  The title is correct... Extreme... your question text replaces by Express... they are only 10/100... and gen only 2 of them.

  Any airport extreme Gen2 - Gen6

  Use the Gigabit ports.

  Do not support jumbo frames

  Do not support pairing.

• EqualLogic SAN and Jumbo frames

  I can't get the jumbo frames to work on our Equallogic PS6000.  We have the following configuration PS6000-> Dell PowerConnect 6248 (bunk)-> Windows 2008 Server.

  The network cards on the SAN has been set at 9000 MTU, ports on switches are set to MTU 9216 and the NIC on Server 2008 is fixed to 9014 with active RX & Tx flow control.

  When the server connects to the SAN, newspapers account connection iSCSI target to the initiator "172.21.X.X:3260, iqn.2001-05.com.equallogic:0-8a0906-xxxxxxxxxxx-23a001a955452af6-server1" ' 172.21.X.X:49156, iqn.1991 - 05.com.microsoft:server1' managed, using the length of the standard framework.

  When I ping the SAN of Server 2008 with a shitload of 8972 bytes, it works very well.

  C:\Users\system>ping 172.21.x.x f-l 8972
  Ping 172.21.x.x with 8972 bytes of data: reply from 172.21.x.x: bytes = 8972 times<1ms ttl="255" reply="" from="" 172.21.x.x:="" bytes="8972"><1ms ttl="255" reply="" from="" 172.21.x.x:="" bytes="8972"><1ms ttl="255" reply="" from="" 172.21.x.x:="" bytes="8972"><1ms ttl="">

  Why 8972?  Told that some genius on the internet.  Any help would be greatly appreciated.

  Well we got it to work.  On Server 2008, we have Broadcom and Intel network adapters.  For our tests, we were just using the Broadcom NIC.  Properties Advanced NETWORK adapter, we initially have the value package Jumbo 9014 and it did not work.  So, we opened the Broadcom Advanced Control Suite that came with the NIC and searched and found that there are two parameters that need to be addressed.  There is a jumbo packet definition which has been set at 9014, which is what we wanted it in the advanced NIC Properties.  There is another parameter, MTU, which can be seen on the advanced NIC Properties.  It has been set at 1500.  Once we define to 9000, frames jumbo started working.  We then uncabled Broadcom NIC and wired the card NETWORK Intel and the value of frames 9014 on advanced network adapter properties.  Once we have that frame has worked on this NETWORK adapter, no other measures were needed.  If it's working now.  Thanks to everyone for their help.

• Best practices of Jumbo frames

  Hello

  I'm looking to use a pair of N3048s in a branch, as the heart of the network and for iSCSI (connected to a new equallogic).

  If I understand correctly, you can set the jumbo frames on the basis of a single port so it must be enabled on all ports.

  Will this cause a problem with the LAN network (i.e. not an iSCSI storage) that none of the devices are configured to use frames?

  Bravo for any advice,

  Huw

  It will not cause any problems. Frames allows the switch works with larger packets. If the switch receives a smaller package, it will be the leash at this size and it transmits on. If a larger packet is sent to a device that cannot receive the biggest package, then the package will be broken down into smaller.

• Enabling Jumbo frames on VMXNET3 adapter in Windows Server 2012

  Hello everyone on the forums of wonderful Equallogic :)

  We have a PS4100X of the virtual computer running on vSphere 5.1 EQL. Everything works very well, and we are about to migrate a VM 2012 SQL our database. I did some research on the issue of whether we should allow the frames extended on the VMXNET3 adapter in the virtual machine.

  Reading this white paper, it seems there are large performance benefits to enable jumbo frames and a few other options in the NETWORK adapter settings:

  http://en.community.Dell.com/TechCenter/Extras/m/white_papers/20403565.aspx

  Just curious as to how other people and if they saw an improvement in performance. Someone at - he had experience with this?

  Thank you

  Lee

  Frames being good or bad, is highly dependent on the switching infrastructure.   If the switches do not manage flowcontrol and frames, then performance could be worse with frames enabled.

  If the switches are not on the list certified for EQL tables, I tend to start with the standard frames, get a baseline run, then try frames gradually and do things of course worsen.

  Extended frames may provide an advantage, he will never be a huge increase, but it improves the efficiency of the network and could reduce the overhead of the processor.    Which are not mandatory for EQL iSCSI environments.

  Please check best practices with document ESX.  That can really help to maximize your performance with storage EQL.

  http://en.community.Dell.com/TechCenter/Extras/m/white_papers/20434601.aspx

  Kind regards

• 5524 - jumbo Frames - entire unit or only to certain ports / vlan

  Hello

  is - anyone idea, if possible to use frames only for ports specific it s?

  After enable JumboFrames, it will create a problem of common computers network traffic? I intended to create a VIRTUAL LAN to connect to the storage and r.620 (under XenServers).

  * We plan to use this unit to connect a Dell Power Vault MD3200i volumes as iSCSI offering.

  * According to our (ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_powerconnect/powerconnect-5524_User%27s%20Guide_en-us.pdf ) switch mannual: "Activation iSCSI automatically enables Jumbo frames and allows the control of flow on all interfaces.

  Allowing the frames on the switch will allow the frames extended on all interfaces. I don't see a way on this option to activate the frames extended on a specific interface or VLAN. Allowing the Jumbo will not create any problem with common computer network traffic. If this switch is connected to another switch, it's a good idea to have some Jumbo frames enabled on the interface of switches connection also.

  Here is a white paper with some info good iSCSI.

  www.dell.com/.../Dell_EqualLogic_%20iSCSI_Optimization_for_Dell_Power_onnect_%20Switches.pdf

  See you soon

• Jumbo frames

  I want to know the general thoughts on enabling Jumbo frames on my 5548 (stacked 4).  I do not use frames now on any device, but I'd like to in the future.  There has traps enabled on my switches Jumbo frames?  These stacked 4 5548 are my only switches of companies, all servers, devices and clients are running.  Thank you!  -Mark

  Here's a great article discussing the Need To Know: Jumbo frames in small networks

  www.SmallNetBuilder.com/.../30201-Need-to-Know-Jumbo-Frames-in-Small-Networks

  In general the frames are set up when connecting a switch to a storage device.  You can get a good idea if you've addressed this topic in the Forum of storage.

  Hope this helps,

• Help understand Jumbo frames

  question.PNG

  

  I was hoping to get help in the frames of understanding. I have the following Setup in our network. If host 1 sends a frame jumbo to accommodate 2 what will happen on the switch. The SVI VLAN 10 has the MTU 9216 and VLAN 11 SVI MTU is 1518. Will the switch be fragmenting the packet to 1518 bytes when it send traffic to host 2?

  Hi Dave,.

  When a jumbo frame is only Layer 2, it will be dropped.

  When a jumbo frame is sent, it will be fragmented. (except if the df bit is set, in which case it falls)

  The display below treats in detail jumbo frames.

  https://supportforums.Cisco.com/discussion/11399941/does-Jumbo-frames-ever-get-fragmented

  Hope this helps,

  Please note the useful answers.

  Thank you.

• cannot ping vmk2 on other servers with jumbo frames

  I had 3 servers esxi 5.1 configure each with 2 NICs vmk - vmk1, vmk2

  vmk1 is on fabA

  vmk2 is on fabB

  the chassis is connected to the FI and the FI, its goes directly to the heart of nexus 7 k. Frames is enabled on the core switches.

  I have CoS of vmotion gold and a Qos policy of gold with the default values shown.

  the problem is each esxi host, when I try to vmkping (vmkping s 8000 vmk1 or ip vmk2), the vmk2 of another esxi host, it does not. but the fact of vmk1.

  I checked my vmnic political and especially on fabB models and they are all set to 9000.

  any ideas here?

  I ping the host local esxi itself and vmk1 vmk2

  Tony,

  One of the things to keep in mind is that traffic of FI - A IF-E passes by the upstream layer 2 network site.  Make sure the LAN past what uplink you also have enabled jumbo frames.

  David

• Jumbo Frame (MTU) option is missing on vSwitch (vSphere Client)

  Hello.  We use ESXi 4.1 in our environment.  I'm going on my ESXi host configuration via vSphere Client, and found out that Jumbo Frame (MTU) is missing in the vSwitch.  That's what I expected, but the "NETWORK card" setting"section is missing.  Any of you had this problem?  Thank you.

  

  With ESXi 4.1 and versions earlier, you must configure several command line parameters, see for example http://kb.vmware.com/kb/1007654

  André

• How to activate traffic iSCSI jumbo frames?

  Hi all

  I have my separate iSCSI coming out of a NETWORK card dedicated to one vlan traffic.

  Now, I have activated the switch to extended frames, qnas 869 pro for jumbo frames also and I (AFAIK) activated my extended frames ESXI host.

  However on the stats of the switch, I can't have counters increase jumbo frames.  others are but not huge.

  After reading all that I Although jumbo frames can help increase performance?

  So I appreciated if you could help me!

  Thank you

  Josh

  Well some how I made jumbo frames work on my ESXI host.

  I enabled frames for each unique interface on the ESXI host and on my NAS that provides iSCSI (qnap 869 pro), I enabled frames extended on both interfaces on it.

  Now it works no problem!

• Jumbo frames, change the MTU size without VM guest tension

  I'm trying to disable jumbo frames, specifically to change the size of the mtu to 1500 (instead of 9000) in vcenter on some hosts. Some hosts run esxi 4.1, others are running esxi 5.0. I wonder if it is absolutely necessary to turn off the virtual machines that are connected to the iscsi san network while making this change, or is it relatively safe to make this change, while VMS are running.

  Each VM has active multipathing, 2 vswitches with 1 NIC associated with each.

  I know how to make the changes, regarding my questions whether it is possible to safely make changes while VMS still access the SAN.

  Yes, it is something that I do in my lab quite frequently without using maintenance mode. Memaad notes, maintenance mode is always preferable to avoid unnecessary risks, but it's finally to you.

  See you soon.

• question of vMotion iSCSI and jumbo frames

  Hello

  I have a cluster ESXi 4.1 using vCenter and a SAN MD3200i.  I'll do an upgrade to optimize the installation, which includes the installation of four NIC ports in hosts that will be used for iSCSI.  I struggle to enable frames or not, but if I do, I just want to do for the iSCSI, at least for now.  Currently, the maps iSCSI network on the hosts and the MD3200 iSCSI connections are connected to two switches separated, although I have seven other switches in the building connected to the PC, printers, etc.  What I only turn frames on two switches that iSCSI is connected, or do I have to enable frames on all my switches?  There is a Dell 2724 and eight 6224Ps of Dell.  ISCSI is connected to the 2724 and one from the 6224Ps.

  The two switches that are connected to the iSCSI ports are not dedicated iSCSI switches; they have other devices on them, but I can only enable the frames extended globally on the switch.  Would there be any problem allowing the frames extended on the switches, otherwise all connected devices are configured for them?

  Another question about vMotion: I will create four ports on each host for iSCSI vmkernel.  Currently, there is also a port configuration vmkernel for traffic management and vMotion.  Is it possible to set up each of the four iSCSI for vMotion vmkernel channels, or should I leave it configured on the port of vmkernel management?

  Thank you!

  Sure. If you're going to enable Jumbo frames, you need to have dedicated switches for that, or a switch that may have different units MTU on their ports.

• Using jumbo frames rising more than 10 GB

  I have 2 10 GB uplinks that lead to the NFS, vMotion, virtual machine and all the traffic going to the host.  What is the best practice regarding jumbo frames?  If I use them to optimize the NFS traffic, it affects any other traffic as well as VM traffic so the production.   NFS should always use frames?

  TheVMinator wrote:

  It not there no problem to have certain groups of ports using frames and others using the regular size on the same host?  I just put the rest of the network to provide end to end?

  On the side of ESXi, there should be no problem. You have separate VLANs for different types of traffic? (Management, VM, NFS and other.)