cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
555
Views
4
Helpful
1
Replies

2 vlans with same ip subnet

vijay1926
Beginner
Beginner

When i was studying ASA, I found in one document that in transparent mode firewall you can assign two vlans with same ip subnet due to STP.

why due to STP we can assign two vlan with same ip subnet?

VLAN means one broadcast domain then how it is possible to assign same ip subnet to two diffrent VLANs.

1 Reply 1

Tom Watts
Advisor
Advisor

Hi Vijay, a transparent mode firewall is essentially a layer 2 switch function. Keeping to the fundamentals, a layer 2 forwarding device doesn't particularly care about layer 3 IP addresses. On a transparent ASA, it does look up based on MAC, not by IP except under a very few certain conditions.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Recognize Your Peers