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meaning of non-IP

sash
Level 1
Level 1

In ACI, do no-IP means all Ethernet frames except protocol type 0x0800 ?
Protocol type is not 0x0800 if we use the IEEE802.1Q VLAN.

Ethernet of IEEE802.1Q with IPv4 payload is IP or non-IP ?

5 Replies 5

Sergiu.Daniluk
VIP Alumni
VIP Alumni

Hi @sash 

I believe that non-IP datagram means any packet which doesn't have the IP header. Which means 0x8100 is considered a IP datagram. In which ACI context have you seen the "non-IP" referenced?

 

Cheers,

Sergiu

@Sergiu.Daniluk  

Thank you for reply.

 

I took the following "For Layer 2 frames" to mean non-IP. I'm confused about this.

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/aci-fundamentals/b_ACI-Fundamentals/b_ACI-Fundamentals_chapter_010010.html#concept_F280C079790A451ABA76BC5C6427D746

 

Table 1. ACI Fabric Dynamic Load Balancing Algorithms
End Host (PC and VPC) traffic
For Layer 2 frames: Source MAC address and Destination MAC address

 

Yeah, I do not want to guess the meaning of layer 2 frames, which imho is a bad terminology (since a frames is the name of the datagram which has L2 headers), but it sounds as it refers to non-IP traffic, as mentioned above: any datagram which doesn't have an IP header.

 

Stay safe,

Sergiu

@Sergiu.Daniluk 

 


Yeah, I do not want to guess the meaning of layer 2 frames, which imho is a bad terminology (since a frames is the name of the datagram which has L2 headers), but it sounds as it refers to non-IP traffic, as mentioned above: any datagram which doesn't have an IP header.

You've cleared up a lot of questions for me. Thank you. 

joezersk
Cisco Employee
Cisco Employee

We might be reading too much into this that is not there.  I read the link and to me it clearly is an L2 Ethernet frame (unless I not looking at the same section that you are).  The link you posted may suffer from some formatting issues and nothing more...I refer to this.  In the row for PC and VPC, it starts with L2 frames (colon) blah blah and only then a new line for IP Traffic: <new line first> then blah blah blah.  Those are two distinct things but the formatting makes it look like it is all one thing.

Screenshot 2020-08-21 at 16.25.43.png

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