### JunosE 11.3.0 Release Notes

> ### Release Software Protocols

> The following list identifies the major software protocols supported in this release. For detailed information about any protocol, see the configuration guides.

> #### Core Routing Stack

> - Internet Protocol (IP) version 4 and version 6
> - Transmission Control Protocol (TCP) for IPv4
> - User Datagram Protocol (UDP) for IPv4 and IPv6

> #### Network Management Protocols

> - Simple Network Management Protocol (SNMP) versions 1, 2c, and 3

> #### Routing Protocols

> - Border Gateway Protocol (BGP-4)
> - Distance Vector Multicast Routing Protocol (DVMRP)
> - Internet Group Membership Protocol (IGMP)
> - Intermediate System–to–Intermediate System (IS-IS)
> - Layer 2 Virtual Private Networks (L2VPNs)
> - Mobile IP
> - Open Shortest Path First (OSPF) version 2 and version 3
> - Protocol Independent Multicast Protocol (PIM), including PIM dense mode, PIM sparse mode, PIM dense-sparse mode, and PIM source-specific multicast
> - Routing Information Protocol (RIP) version 2
> - Virtual Private LAN Service (VPLS)
> - Virtual Router Redundancy Protocol (VRRP)

> #### Multiprotocol Label Switching (MPLS)

> - Border Gateway Protocol (BGP-4)
> - Label Distribution Protocol (LDP)
> - Resource ReSerVation Protocol – Traffic Engineering Extensions (RSVP-TE)

> #### Layer 2 Protocols

> - Asynchronous Transfer Mode (ATM)
> - Bridged Ethernet
> - Bridged IP
> - Cisco High-Level Data Link Control (Cisco HDLC)
> - Ethernet
> - Extensible Authentication Protocol (EAP)
> - Frame Relay
> - Layer 2 Tunneling Protocol (L2TP)
> - Multilink Frame Relay (MLFR)
> - Multilink Point-to-Point Protocol (MLPPP)
> - Packet over SONET (POS)
> - Point-to-Point Protocol (PPP)
> - PPP over Ethernet (PPPoE)
> - Transparent bridging

> #### Security Protocols

> - Internet Key Exchange (IKE)
> - Internet Security Association and Key Management Protocol (ISAKMP)
> - IP Authentication Header (AH)
> - IP Encapsulating Security Payload (ESP)
> - Network Address Translation (NAT)

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