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тАО06-07-2010 04:04 AM
тАО06-07-2010 04:04 AM
im wondering if someone can help me with understanding the physical to logical connectivity of the cisco 3020 in a C-Class.
i've read the following documents but i just cant my head around how the actual physical cabling works.
http://www.cisco.com/en/US/prod/collateral/switches/ps6746/ps6748/ps6765/design_guide_c07-468192.pdf
I understand that the 3020 is in fact a 24 port switch, 16 internal and 8 external. we have 4 3020 and im struggling to understanding how one of our blades is seeing that it has 6 nics.
thanks
Solved! Go to Solution.
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тАО06-07-2010 04:13 AM
тАО06-07-2010 04:13 AM
Re: Cisco 3020
Maybe your blade has 6 nics. Four on a mezzanine card and the two embedded. Does the output show all six Nics conected/linked?
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тАО06-07-2010 04:26 AM
тАО06-07-2010 04:26 AM
Re: Cisco 3020
/jack
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тАО06-07-2010 08:07 AM
тАО06-07-2010 08:07 AM
Re: Cisco 3020
thanks for the reply.
So each blade has 2 nic cards physically in it, 1 card containing 2 on board nics and 1 card containing 4 nics - correct?
so for argument sake i want to connect say both the on board nics to physical port 17 and 18 on the cisco how do i go about that? is this possible with the 16 internal ports on this switch?
thanks again
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тАО06-07-2010 08:50 AM
тАО06-07-2010 08:50 AM
Re: Cisco 3020
/jack
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тАО06-08-2010 02:20 AM
тАО06-08-2010 02:20 AM
Re: Cisco 3020
there is a predefined mapping between blade/card/port to slot/port
you mustn't look at the switch docs but the chassis's doc's
look at attachment for c7000 chassis and half height blades
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тАО06-08-2010 06:54 AM
тАО06-08-2010 06:54 AM
Re: Cisco 3020
Thanks for the info, so how would i present 2x nics to storage, 2 nics to production network and 1 x nic to another vlan? Since i have 14 blades and would like the above configuration is this possible with the 3020?
many thanks
Will
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тАО06-08-2010 07:11 AM
тАО06-08-2010 07:11 AM
Re: Cisco 3020
>>> im struggling to understanding how one of our blades is seeing that it has 6 nics.<<<
this blade probably has a 4-port NIC mezzanine card in mezzanine-port2 of the blade.
did you look at my attachment?
this is only page-45, page-46 tells you more about the 4-port card in mezzanine slot-2.
embedded nic1 and nic2 of blade-N are mapped to bay1 port-N and port-N+8
there is a similar calculation for the other ports.
You probably don't have switch-modules in bay's 5 and 6 of your enclosure?
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тАО06-08-2010 07:35 AM
тАО06-08-2010 07:35 AM
Re: Cisco 3020
yes I did look at your image so thank you but I apologise as even looking at image you sent I still cannot get my head round the calculations of the ports.
please can you post the chassis docs here as look at all the docs I can find and looking at p45-p46 I cannot see any more information about this connections.
yes you are correct we don't have anything in interconnect bays 5-6. thanks for this and sorry i cant get my head round this....
thanks
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тАО06-09-2010 12:37 AM
тАО06-09-2010 12:37 AM
SolutionHP BladeSystem c7000 Enclosure Setup and Installation Guide
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00698286/c00698286.pdf
My screenshot is not from this doc!
but was meant to point you out how it works.
in the above mentioned doc, page 49 says :
NIC 1 maps to bay1/Port N and
NIC 2 maps to bay2/Port N
in bay1 and -2 you must place the two 3020 ethernet switches.
So in full:
blade1
Embedded NICs
nic1 connects to port1 of bay1/lansw
nic2 connects to port1 of bay2/lansw
Mezzanine slot1 (2port iSCSI)
m1iSCSI1 connects to port1 of bay3/iSCSIsw
m1iSCSI2 connects to port1 of bay4/iSCSIsw
Mezzanine slot2 (4port NIC)
m2nic1 connects to port1 of bay5
m2nic2 connects to port1 of bay6
m2nic3 connects to port1 of bay7/lansw
m2nic4 connects to port1 of bay8/lansw
bay 5 and 6 have no lansw installed.
this matches your screenshot
blade10
Embedded NICs
nic1 connects to port10 of bay1/lansw
nic2 connects to port10 of bay2/lansw
Mezzanine slot1 (2port iSCSI)
m1iSCSI1 connects to port1 of bay3/iSCSIsw
m1iSCSI2 connects to port1 of bay4/iSCSIsw
Mezzanine slot2 (4port NIC 1x or 2x card)
m2nic1 connects to port10 of bay5
m2nic2 connects to port10 of bay6
m2nic3 connects to port10 of bay7/lansw
m2nic4 connects to port10 of bay8/lansw
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тАО06-10-2010 03:10 AM
тАО06-10-2010 03:10 AM
Re: Cisco 3020
thank you very much for taking the time to explain it.
may thanks
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тАО06-10-2010 04:55 AM
тАО06-10-2010 04:55 AM
Re: Cisco 3020
Pieter