Comparison Table : LDP vs RSVP

Below table describes the difference between LDP and RSVP:

PARAMETERS	LDP	RSVP
Abbreviation for	Label Distribution protocol	Resource Reservation Protocol
Provisioning	Easy to configure. We just need to enable on interfaces. Label bindings automatically established for specific FECs	Complex configuration
Topology	LSPs from multiple ingresses use the same label to reach the egress (multi-point to point LSP)	RSVP sets up independent point to point LSPs.
QoS	Limited	Guaranteed resources
LSP setup initiation	Egress initiates the LSP setup	Ingress initiates the LSP setup.
Requirement	If primarily LSPs need to be set up, LDP should be used	If you require traffic engineering and resources reservations, use RSVP (-TE).
Scalability	High	Low
ECMP	Possible	Not Possible
Fast Reroute (FRR) support	No	Yes
IGP based decision making	LDP follows IGP for decision making	RSVP does not follow the IGP, and take independent decisions on the reserved traffic
SOURCE:https://ipwithease.com

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