I had an below query which might be an easy question, but I am confused so kindly help me out.
CORE#sh ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 1 0 10.230.96.80/32 1 LOOP 0/0
Po30 1 10 10.232.138.130/30 1 DR 1/1
Vl10 1 10 10.230.97.1/26 10 DR 0/0
Po50 1 10 10.61.128.6/30 1 DR 1/1
Po40 1 10 10.61.128.2/30 1 DR 1/1
In the above output I am clear that the interface loopback, portchannel(combination of multiple link into single link).
But I am confused about vlan 10. As to my knowledge the L3 Vlan are logical int created to act as gateway for l2 vlan. Here how there is an physical link for vlan 10 that form neighborship.
please correct me wherever I am wrong in statement.
you could argue the same for the port channels, as they are logical ports as well. what you are looking at is interfaces participating in OSPF. physical or not
2. like the same how the ports are configured as VLAN 10. As my understanding we can create the L2 Vlan by changing the switchport to access. But how the L3 VLAN int is connected from one router to another?
The L3 vlan would have a L2 vlan equivalent and this would be associated to a physical connection which is either a trunk or access port that is interconnecting to the router/L3switch