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Questions tagged [jumboframes]

49 questions
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Mixing jumbo frames and normal frames on one server?

I have a group of servers on 10Gb that I want to use jumbo frames on to hopefully speed up the backups. The backup server and switches can be changed. If I turn on jumbo frames, will all of the clients that connect to those servers with normal…
user1983916
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Issue with Netgear GS108T Managed Switch and Jumbo Frames

I recently purchased a Netgear GS108T managed switch and I am trying to configure jumbo packets between my NAS (Thecus N4100Pro), PC and managed switch. I should mention the fact that I was able to use jumbo frames between my PC and NAS before I…
Richie086
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VMWare ESXi 4.1 VMXNET Ignoring MTU and Sending Jumbo Frames

On my CentOS 5.6 ESXi 4.1 VMs using VMXNET, it looks like they are attempting to send jumbo frames: However, all the interfaces are set to MTU 1500. What is causing this behavior? Update: I would think that regardless of the switch, wouldn't…
Kyle Brandt
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Link Aggregation And Jumbo Frames configured but not working

I have a netgear GS110TP smart POE switch which is connected to a dual port INTEL PRO/1000PT with static link aggregation configured on the switch and PC side. The network card and switch recognize each other and the devices can connect to each…
Roo
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Cannot increase MTU on gigabit network

I have just set up my new gigabit network and when I was about to increase the MTU to use jumbo frames, I get this error: root@rayquang-desktop:~# ifconfig eth1 mtu 9000 SIOCSIFMTU: Invalid argument Could anyone help me to increase the…
RayQuang
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VMWare converter performance

I have a question about my test lab. It's more to understand the concept more than apply this into production: I have an ESXi with few VMs linux/windows configured and I'd like to use VMWare converter to create backups. To speedup the process I…
bellocarico
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MTU 9000 and 1500 when machines with MTU 1500 send data to machines with MTU 9000

we have some machines in the cluster linux machines as Linux_a , linux_b are configured with MTU 1500 while linux machines - linux_1 and linux_2 are configured with MTU 9000 so linux machines - linux_a and linux_b send heavy data to linux_1 and…
shalom
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Trouble enabling Jumbo Frames?

I'm trying to enable jumbo frames. I have a linux client & a windows server. I've standardized across the board on intel nics. On the windows server the only choice for jumbo frames is 9014 & 4088. I've researched on whether I should set the MTU…
coding4fun
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can we mix MTU values in cluster

we have hadoop cluster ( all machines are linux redhat machines version 7.x ) on the VM machines we set MTU=8900 and all other machines we set MTU=9000 we set on VM MTU=8900 because we saw some network problems with MTU=9000 My question: dose mix…
shalom
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Jumbo frames (mtu 9000) on Debian 7.10 servers with BCM57800 NIC (bnx2x)

I'm working on 2 servers under Debian 7.10 with Broadcom Corporation NetXtreme BCM57800 1/10 Gigabit ethernet. I have done the following for both servers: ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4078 RX Mini:…
Eliot B.
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Should I disable Jumbo Packets on iSCSI network?

Let's say we have a SQL Server 2000 box that houses our main database engine. We added an iSCSI SAN and now that server has a one card connected to the regular network and one card connected to the iSCSI network. The Data is requested through…
jasoncrider
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Sending Ping at fixed packet size as jumbo frame is not working in linux

I have to hosts connected each other with ipv4 address each other. I modified the MTU of each one to 9000. Then I want to send a Ping request at fixed packet size +1500 to verify that can send and receive jumbo frames. When I send the normal ping I…
JeanCarlos Chavarria
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Can't mount read-write iSCSI with MTU=9000

I'm attempting to connect my desktop (running debian 7) to a QNAP NAS (running QTS 4.1.1) using iSCSI with an MTU=9000. The network infrastructure consists of a cat5e crossover cable between the desktop and the nas. If I set the MTU on local machine…
James
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Mixing jumbo frames on Vsphere 5 ISCSI network

We have a HP C7000 blade chassis with a HP Lefthand SAN solution. The ISCSI network is in its own VLAN and is using the standard MTU of 1500. We also have a backup exec 2012 server that has read only access to the Datastores, and we use SAN based…
user2060594
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What is the right way to temporarily disable/enable PMTU Discovery on a Linux box?

I've a few pcaps that contain packets larger than standard ethernet MTU size of 1500B. I searched about this and found refs pointing towards Jumbo Frames. I now understand that since I'm on a GBE network that supports sending Jumbo frames (upto 9k),…
7h3rAm
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