পদ্ধতির তুলনা করুন

	Border Gateway Protocol (BGP)	মাল্টিপ্রোটোকল লেবেল সুইচিং (এমপিএলএস)	নেটওয়ার্ক ফাংশন ভার্চুয়ালাইজেশন (NFV)	Open Shortest Path First (OSPF)
ক্ষেত্র	টেলিযোগাযোগ	টেলিযোগাযোগ	টেলিযোগাযোগ	টেলিযোগাযোগ
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1989	2001	2012	1998
প্রবর্তক	IETF Routing Protocols Working Group	IETF MPLS Working Group	ETSI NFV Industry Specification Group	John Moy
ধরন	path-vector routing protocol	label-based forwarding paradigm	virtualization paradigm	link-state routing protocol
মৌলিক উৎস	Rekhter, Y., Li, T., & Hares, S. (2006). A Border Gateway Protocol 4 (BGP-4). RFC 4271.	Rosen, E. C., Viswanathan, A., & Callon, R. (2001). Multiprotocol Label Switching Architecture. RFC 3031.	ETSI (European Telecommunications Standards Institute). (2012). Network Functions Virtualisation (NFV); Architectural Framework. GS NFV 002 V1.1.1.	Moy, J. T. (1998). OSPF Version 2. RFC 2328.
অপর নাম	exterior gateway protocol, inter-domain routing	label switching, traffic engineering	virtual network functions, network slicing	link-state routing, intra-domain routing
সম্পর্কিত	2	4	2	2
সারসংক্ষেপ	BGP is the de facto standard routing protocol for interconnecting autonomous systems (ASs) on the Internet. Since its introduction in 1989, BGP has scaled the Internet to millions of routers and trillions of destinations. BGP is path-vector-based, using a flexible policy system to control route propagation and selection. While BGP convergence can be slow and policies complex, it remains the only viable protocol for Internet-scale inter-domain routing.	Multiprotocol Label Switching (MPLS) is a forwarding paradigm that prepends a short label to packets, enabling routers to make forwarding decisions based on the label rather than IP destination address. Introduced by IETF (2001), MPLS was designed to enable traffic engineering, VPN creation, and fast rerouting in IP networks. While MPLS complexity is high, it remains foundational in service provider backbones for traffic engineering and Quality of Service (QoS) provisioning.	Network Function Virtualization (NFV) is a paradigm that implements traditional network functions (firewalls, load balancers, gateways, packet inspection) as software running on commodity servers instead of proprietary hardware appliances. Introduced by ETSI (2012), NFV reduces capital and operational expenses by leveraging cloud infrastructure and enabling rapid deployment of network services. Combined with SDN, NFV enables on-demand service creation and network slicing. It is now central to 5G and cloud-native network architecture.	OSPF is a link-state interior gateway protocol (IGP) for routing within an autonomous system. Introduced by John Moy in 1998, OSPF converges faster than distance-vector protocols and supports equal-cost multipath (ECMP). It remains widely deployed in enterprise and ISP networks for intra-domain routing, though IS-IS is increasingly preferred in large backbones.