Celerra/ns480 datamover connectivity question

It depends on the Network configuration on the Blade (which you have not mentioned). It will depend on whether you are using any Trunk configuration (Etherchannel or LACP) or FSN (Fail safe network) or both.

It can be of varios combinations as follows -

1) Four active connections per blade - if no trunk or FSN is configured

2) Four active connnections per blade - if two x 2-port trunk is configured. Each trunk will be of 2 active ports and both trunks are active

3) Four active connections per blade - if one single trunk is configured with all 4 ports - in this case, the Ethernet switches must support channeling across switches

4) Two active connections per blade - if you have Fail safe Network configured - it can be of two combinations again     

          a) One active 2-port trunk and one passive 2-port trunk. I.e. you have two trunks (each having 2 ports) configured - one trunk goes to one switch and the other trunk goes to the second switch - one trunk is primary and the other is standby.

          b) two individual active ports (going to one switch) and two individual passive ports (going to the second switch) - no trunk configuration.

As a common configuration -  your configuration may be most likely either 2) or 4)a)

Thanks,
Sandip

Can someone review the configuration below and let me know if it is workable?

DataMover1:

fge0 cables to SW1

fge1 cables to SW2

setup an LACP connection on fge0-fge1 in Celerra, setup a port channel connection on Nexus 7K1

cge0 cables to SW1

cge1 cables to SW2

setup an FSN connection on cge0-cge1 in Celerra, setup a port channel conection on Nexus 7K1.

Same config for DM2.

Thanks

vPC on 7Ks for LACP trunk on Celerra ?

looks good to me , for FSN connection ..you don't need to do anything on the switch side though, you just configure FSN on Celerra and you are ready to go.

yes.  Thanks.

In FSN configuration, one device is active and the other one is passive. Instead of FSN ..why not do another LACP trunk with cge0 and cge1. Since you have the fancy 7Ks that allow vCP, you are not losing any redundancy yet gain more performance.

Can we do something like below (to complicate things more )? LACP0 - fge0-fge1   (port channel in 7K) LACP1 - cge0-cge1  (port channel in 7K) FSN0 - LACP0 active, LACP1 passive

you absolutly can.

Once you create FSN0 device, thats' when you assign interfaces ( IP Address).

Thanks.

Thanks for the clarification on FSN and suggestion.

Do we need 2 IP addresses for each LACP connection?  Which IP address users connected to?  

Can we do something like below (to complicate things more )?

LACP0 - fge0-fge1   (port channel in 7K)

LACP1 - cge0-cge1  (port channel in 7K)

FSN0 - LACP0 active, LACP1 passive

IP is at a level above devices (interfaces, trunks, FSNs) – you can have one IP or many per device

Can I have one IP address for two devices, LACP0 and LACP1?  It does not look positive to me.

Users connect via an interface (IP address) that associated with a device, LACP0 or LACP1. In that case, we have a choice of either one.

if you do not combine LACP0 and LACP1 into an FSN from Celerra perspective and treat them as two individual trunk devices ..then you can assing ip address to them individually.

No - unless you put a FSN on top but then one will be passive standby

I would suggest to take a look at the networking and networking HA manuals to get more knowledge about the fundamentals

Thanks for your help.

In my opinion, EMC should provide best practice examples in configurating the ports in this subject.  We have worked with different EMC Solution Architects but they are vague and directed us to our Network group.  In general, Network does not know Celerra, Celerra people do not know network.  A gap needs to be filled.