Hi dear
I have a question about the FTEP when you said all switches , they include spines?
and about the Infraestructure VLAN, in your image of leaf switch displays vlan7 with IP, is it right? or what's does means that number?
and what function lo1 do?
In this image extract from book, show vlan8
The explanation of PTEP is for encapsulation and decap VXLAN dataplane
Infra Vlan is for communication between apic and switches control-mgmt traffic
What do you think about these sentences?
Thanks in advance
Hi @willytech007 ,
I have a question about the FTEP when you said all switches , they include spines?
No. The FTEP IP only exists on leaf switches. I've edited my original reply.
and about the Infraestructure VLAN, in your image of leaf switch displays vlan7 with IP, is it right? or what's does means that number?
No. in my example VLAN 7 just happens to be the VLAN that holds the IP address of the subnet associated with the default Bridge Domain of the infra tenant. You can see the IP address if you navigate to Tenants > infra >> Networking > Bridge Domains > Subnets
However, that IP will be implemented on each switch independently of each other - so there is no guarantee that it will be VLAN 7 on any given switch.
VLAN 7 has no relationship with the Infrastructure VLAN
[BTW - the spelling is Infrastructure not Infraestructure]
and what function lo1 do?
Interface lo1 is the IP address that was assigned to these two switches when a VPC Explicit Protection Group was created for these two switches. You can see the IP address if you navigate to Fabric > Access Policies >> Policies > Switch > Virtual Port Channel default
In this image extract from book, show vlan8
In the book example VLAN 8 is the VLAN associated with with the default Bridge Domain of the infra tenant, proving my point above that there is no relationship between the VLAN number (recall that in my example it was VLAN 7) and the IP address.
You can also see from the output of the show vlan extended command that on the switch LEAF101, the infrastructure VLAN is VLAN 3600
The explanation of PTEP is for encapsulation and decap VXLAN dataplane
Correct. FTEP addresses are for the encapsulation and decapsulation of VXLAN packets when VXLANs are used to identify EPGs (rather than VLANs used to identify EPGs). This will only occur if there is a vSwitch attached to that leaf that terminates the encapsulated VXLAN that represents the EPG.
Infra Vlan is for communication between apic and switches control-mgmt traffic
Correct. As I said before "The Infrastructure VLAN is the VLAN used between leaf switches and the APIC. The only place you'll see an IP on the Infrastructure VLAN is on the APIC." And indeed, it is used for control-mgmt traffic. All traffic leaving the APIC destined to some leaf will leave the APIC encapsulated in this Infrastructure VLAN - and as you can see from your book example, gets remapped to the relevant VLAN for the infra:default Bridge Domain.
I hope this helps.
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Hi there
In the book said that SVI vlan 8 is Infraestructure vlan on leafs, here the text
I understand that only ACI create SVI > vlan infraestructure(defined initial config console)
But the book makes me think also leaf switches have SVI referenced Infraestructure VLAN.
Thanks for you help
Regards
