Can you list 4 key differences between OSPF and ISIS as IGP protocols?

1-OSPF: is standard routing protocol, IS-IS: is Cisco Propriety

2-OSPF: runs over L3,IS-IS: runs over L2

3-OSPF: uses IP Protocol 89 as transport , IS-IS: is directly encapsulated in Layer 2 

4-OSPF: Area Border Router (ABR) , IS-IS: L1L2 router 

as-slam wlaykum

 ospf vs is-is

OSPF SUPPORT VIRTUAL LINK BUT IS-IS DOESNOT

OSPF SUPPORT POINT TO MULTIPOINT BUT IS-IS DOESNOT

OSPF HAS MULTIPLE AREA BUT IS-IS  HAS ONE areas

OSPF HAS DR AND BDR WHICH CAN NOT BE PREEMPTED WHERE AS IS-IS HAS DIS WHCIH CAN BE PREEMPTED