Re: jumbo frames with non rac

Hi Jeff,

I wasn't sure if you were referring to storage or not but should have guessed since you mentioned NetApp. I would agree with Matthew that it should be safe to use but probably using similar precautions in that all devices involved are setup to use that larger MTU size.

Alfredo

On Fri, Nov 11, 2016 at 2:26 PM, Jeff Chirco <backseatdba_at_gmail.com> wrote:

> I am referring to use jumbo frames from the server to the storage, not
> user network.
>
> On Fri, Nov 11, 2016 at 12:10 PM, Dimensional DBA <
> dimensional.dba_at_comcast.net> wrote:
>
>> As Alfredo mentions you normally don’t use jumbo frames on the public
>> facing networks as none of the clients normally have jumbo frames setup.
>> This could be different if you were using say citrix desktops and ewveryone
>> used those to access their applications then what you want may work.
>>
>> I have also used jumbo frames on storage networks to netapps or other
>> network storage.
>>
>>
>>
>> *Matthew Parker*
>>
>> *Chief Technologist*
>>
>> *Dimensional DBA*
>>
>> *425-891-7934 <425-891-7934> (cell)*
>>
>> *D&B *047931344
>>
>> *CAGE *7J5S7
>>
>> *Dimensional.dba_at_comcast.net <Dimensional.dba_at_comcast.net>*
>>
>> *View Matthew Parker's profile on LinkedIn*
>> <http://www.linkedin.com/pub/matthew-parker/6/51b/944/>
>>
>> www.dimensionaldba.com
>>
>>
>>
>> *From:* oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freeli
>> sts.org] *On Behalf Of *Alfredo Abate
>> *Sent:* Friday, November 11, 2016 11:55 AM
>> *To:* Jeff Chirco
>> *Cc:* kathy duret; oracle-l_at_freelists.org
>> *Subject:* Re: jumbo frames with non rac
>>
>>
>>
>> Jeff,
>>
>>
>>
>> My understanding of using jumbo frames with Oracle RAC is to be able to
>> increase the packet size of the *private interconnect* (heartbeat) of
>> the cluster for better performance. This is normally done on segregated
>> switches (or switch ports), NICs, etc so that they are all configured for
>> the larger MTU size (9000).
>>
>>
>>
>> If you are considering enabling jumbo frames on the *public network* of
>> a single instance (or even RAC) database server that your application
>> servers or end users will directly be connecting to it can cause issues
>> since most networks are configured for the normal MTU size (1500). This
>> mismatch will potentially cause network issues such as packet drops when
>> the two devices are communicating with each other.
>>
>>
>>
>> Alfredo
>>
>>
>>
>> On Fri, Nov 11, 2016 at 12:38 PM, Jeff Chirco <backseatdba_at_gmail.com>
>> wrote:
>>
>> Sorry yes Oracle Linux 7 here and with hugepages. 11g database currently
>> but plans to 12c.
>>
>>
>>
>> On Fri, Nov 11, 2016 at 9:15 AM, kathy duret <katpopins21_at_yahoo.com>
>> wrote:
>>
>> I am assuming Linux here ...
>>
>>
>>
>> You will also need to set up hugepages and there are some other settings
>> to consider like semaphores.
>>
>>
>>
>> There are many papers on how to do set this up. I would look on MOS
>> first and then go fro there.
>>
>>
>>
>> *Kathy Duret*
>>
>>
>>
>>
>> ------------------------------
>>
>> *From:* Jeff Chirco <backseatdba_at_gmail.com>
>> *To:* "oracle-l_at_freelists.org" <oracle-l_at_freelists.org>
>> *Sent:* Friday, November 11, 2016 10:30 AM
>> *Subject:* jumbo frames with non rac
>>
>>
>>
>> We are in the middle of setting up replacing new database servers and
>> been wondering about jumbo frames. We have 10gb network and we don't run
>> RAC and not sure if we ever will but wondering if there still is a big
>> benefit for jumbo frames? We also are running a new NetApp all flash
>> storage.
>>
>> From what I have read so far is yes there is a benefit but just wondering
>> if anyone has any opinions? I am not very knowledgeable on the network side
>> of things.
>>
>> Thanks,
>>
>> Jeff
>>
>>
>>
>>
>>
>>
>>
>
>

--
http://www.freelists.org/webpage/oracle-l