10Gbe sfp+ Cross Over Cable required? Is there such a thing?

Posted by dc-patos on Server Fault See other posts from Server Fault or by dc-patos
Published on 2012-09-12T20:24:00Z Indexed on 2012/09/12 21:40 UTC
Read the original article Hit count: 302

Filed under:

networking

|

cabling

|

10gbethernet

To preface, this is my first experience with 10GBe networking and I have encountered an issue which research does not seem to document a solution for...

I have two servers (older DL580G5 and DL380G5), each with a HP NC522SFP 10Gbe dual sfp+ port adapter. I have purchased copper "passive" direct connect adapter cables (which look like twinax), which seem to work well when I connect them to the sfp+ ports on my Dell 5524 switch. However, if I directly connect the two servers with the same cable, the link doesn't come up. I am running WS2012 standard on each server. My intention is to use one of these servers as a home brew SAN and I would like to enable mutiple 10Gbe paths for iSCSI traffic.

My question(s):

Can I connect the two adapters to each other, such as I would with other less speedy generations of ethernet? If I can, do I require a crossover cable, or some type of other sfp+ cable solution to do this? My 10Gbe sfp+ switch ports are premium, but server to server connections are doable in small numbers for me and I would really like the multiple paths this would give me. Is there a simple solution?

© Server Fault or respective owner

Related posts about networking

Networking stopped working on Ubuntu

as seen on Super User - Search for 'Super User'
I installed Ubuntu 10.04 through the Wubi installer (Funny, I installed it today and thought I would have gotten 10.10). I had a network connection and everything was working fine. I rebooted my coumputer a couple of times and then suddenly, I could not connect to the network and when I click the… >>> More
Troubles with start up defenition of networking service in Ubuntu

as seen on Super User - Search for 'Super User'
I use Ubuntu 12.04.1. I put attention that networking script starting in runlevel 0: user@comp:/etc/rc0.d$ chkconfig -l networking networking 0:on 1:off 2:off 3:off 4:off 5:off 6:off When I try to move it working to appropriate run levels I get error: user@comp:/etc/rc0… >>> More
Installing the Elgg Social Networking CMS

as seen on Internet.com - Search for 'Internet.com'
One Open Source CMS that stands out above the rest for small businesses and personal networks is the Elgg open source "social engine," which can be used to create social applications. Scott Clark shows you how to install and get started with this social networking CMS. >>> More
OAuth: Token-Based Authorization for the Social Networking Age

as seen on Internet.com - Search for 'Internet.com'
The OAuth token-based authorization system allows users to grant third-party access to their resources without sharing their usernames and passwords. It's perfect for the age of data scattered across many social networking sites. >>> More
OAuth: Token-Based Authorization for the Social Networking Age

as seen on Internet.com - Search for 'Internet.com'
The OAuth token-based authorization system allows users to grant third-party access to their resources without sharing their usernames and passwords. It's perfect for the age of data scattered across many social networking sites. >>> More

Related posts about cabling

BT socket Device over Structured Cabling

as seen on Server Fault - Search for 'Server Fault'
Not sure if this is the right stack* site to post on but I believe cabling is a just subject. Essentially I have a Credit Card machine which is connected to a phone line via standard BT Socket. So basically, the port of the wall has a balun plugged in which takes the RJ45 outlet on the wall to BT… >>> More
Cabling: What to keep in stock?

as seen on Server Fault - Search for 'Server Fault'
I have worked a few different places, each one with a different solution, so I would like to hear your suggestions and ideas. I am looking at a situation with multiple server-rooms. We have a mixture of copper (both ethernet and telephone), multi-mode fibre and single-mode fibre. We have all types… >>> More
Network cabling with multiple patch panels?

as seen on Server Fault - Search for 'Server Fault'
I am in the very early stages of planning a network cabling upgrade in our office, mainly to upgrade the old cables from Cat5 to either 5e or 6. I am also planning on upgrading all of our 10/100 switches to 10/100/1000 switches. I would like to have three small wall mounted cabinets spread around… >>> More
Splitting Ethernet cable

as seen on Server Fault - Search for 'Server Fault'
I am looking for the best way to network my small business. I have an office where my router/modem are located, and then 2 more computers in another room. I can route Ethernet to this room with about 75 ft of cabling, and I would like to do this because my computers on Ethernet are getting 3x the… >>> More
Anyone interested in obtaining a cable list from a visio Diagram? [closed]

as seen on Server Fault - Search for 'Server Fault'
it's my first post here. Just wondering if anyone had to deal with the following problem - you have to install over say a 100 network elements and servers - cabling is done via contractors, so you need to provide them with an accurate, error-free cable list - your inputs are a set of detailed, port… >>> More