Port Channel Lab
In Nexus Technology labs under classical switching Port Channel Lab is there.
on N5K Load Balacing algorithm is: port-channel load-balance ethernet source-dest-port
on N7K Load Balacing algorithm is: port-channel load-balance source-dest l4port
All the Port channels configured in the lab are layer2 Port Channels.
On N7K they are not using ethernet parameter. which means port channel should be a layer 3 Port Channel. But all port channels configured are layer 2.
Please clarify the difference between the load balancing algorithm used on N5K and N7K.
Comments
For 7K:
The default method for Layer 2 packets is src-dst-mac. The default method for Layer 3 packets is src-dst-ip
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/6_x/nx-os/interfaces/configuration/guide/if_cli/if_portchannel.html
Deepak, My question was that they have used 2 different load balacing configuration. one on N5K and other on N7K.
@Hari_K,
Per you original question, those are both the same mode just listed differently. Do bear in mind that the 7K also has the ability to look further and hash on the VLAN as well, whereas the 5K does not. Also bear in mind that when enabling feature-set fcoe on either platform, it will automatically change the load-balence algorithm to this l4port-vlan (7K) or src-dst-port (5k).
Going along with what Mark said, from a product positioning, Nexus 5K is a layer 2 aggregation switch. Nexus 7K is a core layer 3 switch. N5K can support basic L3 functions, but mainly it’s meant to be L2 only. N7K does layer 3 classification in hardware even on frames that are forwarded at layer 2.
Brian McGahan, 4 x CCIE #8593 (R&S/SP/SC/DC), CCDE #2013::13
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From: [email protected] [mailto:[email protected]] On Behalf Of Mark Snow
Sent: Wednesday, April 30, 2014 11:02 AM
To: Brian McGahan
Subject: Re: [CCIE DC General] Port Channel Lab
@Hari_K,
Per you original question, those are both the same mode just listed differently. Do bear in mind that the 7K also has the ability to look further and hash on the VLAN as well, whereas the 5K does not. Also bear in mind that when enabling feature-set fcoe on either platform, it will automatically change the load-balence algorithm to this l4port-vlan (7K) or src-dst-port (5k).
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Thanks everybody for the reply.
I got my clarification.
I just read for layer 2 Port Channels in load balancing you can use both ethernet and without ethernet option.
Where as in layer 3 Port channel load balancing you should not have ethernet option.
So the configuratiion in the workbook is correct.