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Adding a Nexus 5548UP (Jumbo Frame Enabled) to an Existing Core (non-jumbo)

Greetings Everyone,

I need your input on how to appropriately introduce an N5K with Jumbo enanbled to a prexisting Core Network (Stack of Cisco 3750G Switches) without making any major alteration on the Core configs (everything is happy). The idea is to move two High I/O servers to the N5K during a transitional phase. I already have a fair understanding of what Jumbo-Frames are and what it does. I welcome any realistic answer from anyone who has tried this and has it working in a production environment.

Here's why I wanted to do this:

- Boost bandwidth between two High I/O Linux servers

What I don't want to do:

- Enable Jumbo-Frames on the Core Network - keep @ a default of 1500 mtu

- Renumber the servers

What I wish to accomplish:

- Keep Jumbo-Frames within the N5K ONLY

Conditions:

- Traffic is Data traffic, not storage/iSCSI

- The servers host our ERP applications and MySQL that is accessed heavily by users

- N5K to C3750G connectivity is a Port-Channel consisting of 4x1GB ports

- The servers are to remain on VLAN 2 (Data VLAN)

- The Core Switch is L3 and the boundaries reside here

I look forward to your suggestions.

Thank you Everyone!

Elmer    

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Adding a Nexus 5548UP (Jumbo Frame Enabled) to an Existing Core

Hello Elmer,

Be careful with the etherchannel config.

You may find the following thread useful:

https://supportforums.cisco.com/message/3498819#3498819

HTH,

Alex

*Please rate helpful posts

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1 REPLY 1

Adding a Nexus 5548UP (Jumbo Frame Enabled) to an Existing Core

Hello Elmer,

Be careful with the etherchannel config.

You may find the following thread useful:

https://supportforums.cisco.com/message/3498819#3498819

HTH,

Alex

*Please rate helpful posts

View solution in original post

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