
[VRF](/vrf) names are locally significant and are not sent in any updates to other PEs. The **RD is used to make an update unique** within the [MP-BGP](/bgp-multiprotocol-bgp) portion of your [MPLS](/mpls) [VPN](/vpn) network and is sent as part of the MP-BGP update between PEs. It is what makes a prefix a VPNv4 prefix and not an [IPv4](/ipv4) prefix. Therefore **it needs to be unique within the network.** Otherwise if the same RD is used on multiple VRFs for different customers there may be overlapping prefixes in the network.

## Links

https://forum.networklessons.com/t/mpls-layer-3-vpn-pe-ce-ospf/1291/66?u=lagapides

MPLS VRF names locally significant

MAC address

MPLS - BGP customer prefixes do not appear in the LFIB

MPLS - Connecting IPv6 sites over an IPv4 backbone

MPLS - Disabling IPv4 address family in BGP for VPNv4

MPLS - Ethernet over MPLS (EoMPLS)

MPLS - L3VPN BGP EIGRP redistribution

MPLS - L3VPN BGP OSPF Redistribution

MPLS - LDP source interface

MPLS - Layer 2 VPNs

MPLS - Multi-VRF CE

MPLS - OSPF redistributed routes appear as O IA

MPLS - Segment Routing over MPLS

MPLS - Transport Profile

MPLS - Using RSVP for Traffic Engineering

MPLS - Using the BGP Allow-AS in feature

MPLS - VPN label

MPLS - VPN redistributing default route from CE into BGP

MPLS - VPNv4 Labels are assigned per route

MPLS - Virtual Private Network (VPN)

MPLS - label distribution using MP-BGP

MPLS - label

MPLS - multiarea OSPF in the core

MPLS - network redundancy

MPLS - what is fate sharing

MPLS - what is seamless MPLS

MPLS 6PE uses two labels in the data plane

MPLS Bytes Label Switched in the LFIB

MPLS Customer Edge Router

MPLS L3 VPNs and the interaction between AS-Override and SoO

MPLS L3VPN Inter-AS Options

MPLS LDP Label Filtering

MPLS LDP Session Protection

MPLS LDP Targeted Hellos

MPLS LSR ID

MPLS Label Distribution Protocol

MPLS Label Distribution and Swapping

MPLS Label Edge Router

MPLS Label Switch Router

MPLS Layer 3 VPN communication between CE and PE routers

MPLS Layer 3 VPN communication between CE routers

MPLS Local Label Allocation Filtering

MPLS Penultimate hop popping

MPLS Route Distinguisher

MPLS Route Target

MPLS TE - Affinity attribute flag assignment best practices

MPLS TE - TE Tunnels

MPLS TE setup and hold priority

MPLS Troubleshooting

MPLS VPN extranet route leaking unique addressing

MPLS addresses bound to peer LDP Ident output

MPLS advertising multiple customer subnets

MPLS entropy label

MPLS explicit NULL

MPLS implicit NULL

MPLS mandatory use of CEF

MPLS traffic engineering

MPLS-TE - why are IGPs necessary

MPLS

MPP vs ACLs

MQTT return codes

MST - Root port selection for switches outside MST topology

MST configuration revision number

MTU - Adjusting MTU to accommodate additional headers

MTU - Benefits of large L2 MTU

MTU - Interface MTU configuration considerations

MTU - Interface MTU vs IP MTU

MTU - MSS and Jumbo Frames

MTU - Path MTU Discovery (PMTUD)

MTU - Understanding L2 MTU and Frame Handling in Network Switches

MTU - default interface MTU

MTU adjusting the MSS for TCP

MTU ip mtu allowed values

MTU on Etherchannel links

MTU on router subinterfaces

MTU size in Cisco IOS XR and IOS software

Management Plane Policing (MPP)

Media Access Control (MAC)

Memory - CAM and TCAM

Memory - TCAM Lookups

MetroEthernet - VLAN design considerations

MetroEthernet - Virtual Private LAN service

MetroEthernet - Virtual Private Wire Service

MetroEthernet

Multi-Topology Routing

Multicast - ASM and SSM on same network

Multicast - Any Source Multicast (ASM)

Multicast - AutoRP

Multicast - Bootstrap Router (BSR)

Multicast - Example Use Cases

Multicast - GLOP address space

Multicast - HSRP-aware PIM

Multicast - Local Network Control Block

Multicast - MSDP

Multicast - NX-OS and IOS config comparison

Multicast - PIM ALL-PIM-ROUTERS group

Multicast - PIM Bootstrap (BSR)

Multicast - PIM Control Messages

Multicast - PIM Snooping platform support