My head office is located in one building,where i have 2 core switches and access layer switches.there is on more office(OLVIRA) which is located in another building, this office is connected to the head office through the L2 fiber which is truck to follow more then 1 vlan.HSRP is running between the core switches.also vtp is running in core switches.
now one more office(SAMIS) is openning at another building,this office is connected to OLVIRA office with L2 fiber connection and from OLVIRA to head office.
This office(SAMIS) have the diffirent ip subnet.So my doubt is how to use single fiber link as a L2 link and L3 link.
