Nexus 7K Line card

[ramkunta]

Hi,

There is a 32 port 1G/10G line card in Nexus 7K (N7K-F132XP-15).

Can some one tell me the maximum number of ports that can be simultaneously used with 10Gig?

Thanks,
Ram

[ramkunta]

Apologies....I meant the maximum number of ports among the 32 available that can be simultaneously used as 10Gig ports.

[vmiller]

Yes. each group of 4 ports (numbered vertically, right to left) is supported by one asic.

the first port in the group (1,2 9,10 17,18 24,25) is the high cap port.

if you use this one with ther rate-mode dedicated, the remaining ports are not usable.

best idea is to do a shut on the remaining ports in the group

[rparames]

Hello Vmiller,

M1 line cards are oversubscribed at line card itself. So you may have 4 ports sharing same ASIC 4:1 oversubscription.

This is not applicable on F1 line cards.

Regards,

Rahul

[rparames]

Hello Ramchander,

N7K-F132XP-15, is not oversubscribed at line card itself. 
However, the bottle neck in this case is created at the fabric, as at this point of time we can have 230G per slot.

For local layer 2 switching, each port can run up to wire rate. For layer 3 switching, it still runs into the oversubscription issue because
packets go through the fabric module whose bandwidth has only 230G for all the 32 ports

HTH,

Rahul

[ramkunta]

Thank you vmiller, thank you Rahul...thank you for responding.

Regards,

Ram