Dynamic inter-VRF communication explained

Dynamic inter-VRF communication explained

The following section explains how VRF routing domain isolation is maintained, and how routes that exist in one VRF instance are leaked to another VRF instance via BGP. Only BGP can be used to dynamically leak routes from one VRF instance to another.

The Forwarding Information Base (FIB) and routing protocols

Associated with each VRF instance is an IP route table, also known as the Forwarding Information Base (FIB). When BGP address-families (associated with VRF instances) are configured, a corresponding BGP route table is created for each VRF instance on which a BGP address-family is configured.

Similarly, when RIP address-families (associated with VRF instances) are configured, a corresponding RIP route table is created for each VRF instance on which a RIP address-family is configured.

Similarly, when OSPF instances (associated with VRF instances) are configured, a corresponding OSPF route table is created for each VRF instance on which an OSPF instance is configured.

Each dynamic routing protocol automatically selects appropriate routes and copies them to the FIB.

Static and connected routes are automatically added to the FIB when they are created.

 

 

1

 

 

 

 

 

 

 

 

 

 

OSPF

 

 

 

 

 

 

 

 

 

 

 

 

 

RIP

 

 

 

 

 

 

 

 

 

address

 

 

 

 

 

 

 

 

 

family

-

 

 

 

 

 

 

 

 

red

 

 

BGP

 

 

 

 

 

 

VRF

 

 

 

address

 

 

 

 

 

 

 

 

 

family

-

 

 

 

 

 

 

 

 

 

red

BGP

 

 

 

 

red

 

 

 

 

 

 

 

 

FIB

 

 

 

 

 

address

-

 

 

 

 

 

 

 

 

 

family

 

 

 

 

 

 

 

 

 

 

blue

 

 

RIP

 

 

 

 

 

 

 

 

 

address

 

 

 

 

 

 

 

 

 

family

-

 

 

 

 

 

 

 

 

 

blue

 

OSPF

 

 

 

 

 

 

 

VRF

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

blue

 

 

 

 

 

 

 

 

 

 

FIB

 

 

 

 

 

 

BGP routes copied between BGP

 

 

 

 

 

 

 

 

VRF Device

address-families to facilitate inter-VRF

 

 

 

 

 

 

 

 

 

 

communication

 

 

 

 

 

 

 

 

 

 

 

Page 18 Configure VRF-lite

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Allied Telesis C613-16164-00 REV E manual Dynamic inter-VRF communication explained

C613-16164-00 REV E specifications

The Allied Telesis C613-16164-00 REV E is a robust networking device designed to enhance connectivity and communication within enterprise environments. Renowned for its reliability and efficiency, this device serves as an ideal choice for organizations seeking to improve their network infrastructure.

At its core, the C613-16164-00 REV E is a part of Allied Telesis' suite of products that adhere to high-performance standards. One of the main features is its support for both Layer 2 and Layer 3 networking, making it versatile enough to handle a variety of network configurations. This capability allows for seamless integration into different network architectures, whether for simple local area networks (LANs) or more advanced setups with routing capabilities.

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In conclusion, the Allied Telesis C613-16164-00 REV E stands out as an excellent networking solution characterized by its support for multiple networking layers, high-speed data transfer, and robust security features. Ideal for both small to medium enterprises and larger organizations, it helps ensure that businesses can maintain efficient and secure operations in a constantly evolving digital landscape.