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c7000 port mappings

 
Occasional Visitor

c7000 port mappings

ok Not sure if this should be in the network section but any help would be appciecated.

We are doing a server refresh but the budget didn't strech to new chassis. so we have 4 new bl460 g10 in the old c7000 chassis. this issue is the have 8 cisco catalyst swiches in the back of the chassis. 

the blades only support 2times  2 port mez cards with 2 onboard ports. giving us 6 ports for 8 switches. 

i didn't think this would be a problem looking at the design my Predecesure left. but when i got into it it seems they have configured it different to the design. so all the storage is on switch 7 and 8 the ones i can't access. 

is there a way to change the port mapping so that the mez cards take to different switches than there default assignment? i.e. instead of onboard port 1 to switch one onboard port 2 to switch etc 

i can make mez port 2 talk to switch 8 instead of switch 4?  i have access to ilo but can't see a method there?

2 REPLIES 2
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Acclaimed Contributor

Re: c7000 port mappings

Interconnect by 7 and 8 are hardwired to port 3 and 4 of a 4 port mezzanine in slot 2.

Obviously there are no 4 port cards for Gen10.

Usually no problem since most using virtual connect, but unfortunately there is likely no solution for you ...


Hope this helps!
Regards
Torsten.

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HPE Pro

Re: c7000 port mappings

Hi 

Port mapping is hard-wired, which cannot be change.

Please refere Device Bay Port Mapping for c7000 Enclosure.

Half-Height, Single-Wide server blades (Such as ProLiant BL260c, BL280c, BL420c, BL460c, BL465c,BL490c, BL495c, and WS460c)
1.png

In this diagram, N equals the number of the server blade in the enclosure and the port number on the switch. For example, if a server blade is inserted into slot 1, it is considered device 1, and the ports that will be usedin switch 1 and switch 2 are ports 1 and 1, respectively. If a server blade is inserted into slot 2, then the portsused on switch 1 and switch 2 are ports 2 and 2. This convention changes for the Full-Height server blades asseen in the next diagram.

Full-Height, Single-Wide server blades (such as ProLiant BL680c (G1), BL680c Gen5, and BL480c,BL620c, BL660c, and BL685c)

2.png

In this diagram, N equals the number of the blade in the enclosure and the port number for the switch. Fo rexample, if a blade is inserted into slot 1, it is considered device 1. Because full-height, Single-Wide serverblades take up the space of two Half-Height server blades, the enclosure is limited to a maximum of eight Full-Height, Single-Wide server blades. Port mapping from these Full-Height, Single-Wide server blades might initially appear to be different than the half-height server blades, but they use very similar conventions.

Just as in a Half-Height server blade, if a blade is inserted into slot 1, it is considered device 1, but it has asecond set of ports that will also map to switches 1 and 2. With the Full-Height, Single-Wide server blade, anN/N+8 scheme is used on the switches. Therefore, server blade 1 will map to ports 1 and 9 on both switches,as N=1. For a server blade inserted into slot 2, the four ports used on switches 1 and 2 would then be 2 and10, as N=2.

Half-Height, double dense server blades such as ProLiant BL2x220c (G1)–G6

3.png

Half-Height, double dense server blades such as ProLiant BL2x220c G7

4.png

Full-Height, Double-Wide server blades such as ProLiant BL680c G7
A-side

5.png


B-side

6.png

 

For more information please refer Architecture and technologies in the HPE BladeSystem c7000 Enclosure

https://h20195.www2.hpe.com/v2/getpdf.aspx/4aa4-8125enw.pdf

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