12-04-2019 07:57 PM
12-04-2019 09:56 PM - edited 12-06-2019 09:32 PM
Hi @Yong Peng ,
The use of the word Domain in ACI is very confusing. ACI has:
The three that I have highlighted in red are very similar, but there is no real relationship between Bridge Domains and Physical/External Bridged Domains/External Routed Domains.
But back to your mention of PVLANs - if you are looking for the equivalent of a Private VLAN then you should look at the Intra EPG Isolation option within an EPG - but I'm not sure if that's what you are looking for.
So back to the core ACI concepts
Firstly, learn these rules.
Now Bridge Domains and EPGs are defined within the tenant object, and form part of the logical design. Somehow you have to tie the logical design to the physical switch ports.
This is where the Physical/External Bridged Domains/External Routed and VMM Domains come in.
These Domains are part of what I call the Access Policy Chain (Google it), and are linked to a Pool of VLAN IDs and to a set of physical ports.
Every EPG needs to be linked to at least one Physical and/or VMM Domain. That link between the EPG and the Physical/VMM Domain defined which VLANs and Ports can be used for that EPG.
There are some good ACI Tutorials that might help - I suggest you google search Cisco ACI Tutorial. You will probably find some I wrote, and some by Adam Raffe that are good, and possbily others.
* Default gateway IPs are typicall allocated to Bridge Domains but can also be asigned to EPGs - Assigning IPs to EPGs is not as flexible but necessary if the EPG needs to provide services to another Tenant. It's OK to have IPs assigned to both Bridge Domains and EPGs - even the same IP if you wish.
I hope this helps
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12-05-2019 05:05 PM
Dear RedNectar,
Thanks a lot for your reply, this is helpful.
12-05-2019 08:33 PM
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