close

keyboard_arrow_left

Table of Contents Expand all

play_arrow Features Common to EVPN-VXLAN, EVPN-MPLS, and EVPN-VPWS
- play_arrow Configuring Interfaces
  - VLAN ID Ranges and Lists in an EVPN Environment
- play_arrow MAC Address Features with EVPN Networks
- play_arrow Configuring Routing Instances for EVPN
- play_arrow Configuring Route Targets
- play_arrow Routing Policies for EVPN
  - Routing policies for EVPN
  - Example: Using Policy Filters to Filter EVPN Routes
- play_arrow Layer 3 Gateways with Integrated Routing and Bridging for EVPN Overlays
  - Understanding the MAC Addresses For a Default Virtual Gateway in an EVPN-VXLAN or EVPN-MPLS Overlay Network
- play_arrow EVPN Multihoming
- play_arrow Link States and Network Isolation Conditions in EVPN Networks
- play_arrow EVPN Proxy ARP and ARP Suppression, and NDP and NDP Suppression
  - EVPN Proxy ARP and ARP Suppression, and Proxy NDP and NDP Suppression
  - ARP and NDP Request with a proxy MAC address
- play_arrow Configuring DHCP Relay Agents
  - DHCP Relay Agent in EVPN-MPLS Network
  - DHCP Relay Agent over EVPN-VXLAN
- play_arrow High Availability in EVPN
- play_arrow Monitoring EVPN Networks
  - Connectivity Fault Management Support for EVPN and Layer 2 VPN Overview
  - Configure a MEP to Generate and Respond to CFM Protocol Messages
- play_arrow Layer 2 Control Protocol Transparency
  - Layer 2 Control Protocol Transparency for EVPN
play_arrow EVPN-VXLAN
- play_arrow Overview
- play_arrow Configuring EVPN-VXLAN Interfaces
- play_arrow Configuring VLAN-Aware Bundle Services, VLAN-Based Services, and Virtual Switch Support
- play_arrow Load Balancing with EVPN-VXLAN Multihoming
  - Dynamic Load Balancing in an EVPN-VXLAN Network
  - Fast Reroute for Egress Link Protection with EVPN-VXLAN Multihoming
- play_arrow Setting Up a Layer 3 VXLAN Gateway
- play_arrow Configuring an EVPN-VXLAN Centrally-Routed Bridged Overlay
  - Example: Configure an EVPN-VXLAN Centrally-Routed Bridging Fabric
  - Example: Configure an EVPN-VXLAN Centrally-Routed Bridging Fabric Using MX Routers as Spines
- play_arrow Configuring an EVPN-VXLAN Edge-Routed Bridging Overlay
- play_arrow IPv6 Underlay for VXLAN Overlays
  - EVPN-VXLAN with an IPv6 Underlay
  - Example: Configure an IPv6 Underlay for Layer 2 VXLAN Gateway Leaf Devices
- play_arrow Multicast Features with EVPN-VXLAN
- play_arrow Configuring the Tunneling of Q-in-Q Traffic
  - Examples: Tunneling Q-in-Q Traffic in an EVPN-VXLAN Overlay Network
- play_arrow Tunnel Traffic Inspection on SRX Series Devices
  - Tunnel Inspection for EVPN-VXLAN by SRX Series Devices
- play_arrow Fault Detection and Isolation in EVPN-VXLAN Fabrics
play_arrow EVPN-MPLS
- play_arrow Overview
- play_arrow Convergence in an EVPN MPLS Network
  - Convergence in a Multihomed EVPN-MPLS Network
- play_arrow Pseudowire Termination at an EVPN
- play_arrow Configuring the Distribution of Routes
- play_arrow Configuring VLAN Services and Virtual Switch Support
- play_arrow Configuring Integrated Bridging and Routing
- play_arrow Configuring IGMP or MLD Snooping with EVPN-MPLS
play_arrow EVPN E-LAN Services
play_arrow EVPN-VPWS
- play_arrow Configuring VPWS Service with EVPN Mechanisms
play_arrow EVPN-ETREE
- play_arrow Overview
  - EVPN-ETREE Overview
- play_arrow Configuring EVPN-ETREE
  - Example: Configuring EVPN E-Tree Service
play_arrow Using EVPN for Interconnection
- play_arrow Interconnecting VXLAN Data Centers With EVPN
  - VXLAN Data Center Interconnect Using EVPN Overview
  - Example: Configuring VXLAN Data Center Interconnect Using EVPN
- play_arrow Interconnecting EVPN-VXLAN Data Centers Through an EVPN-MPLS WAN
- play_arrow Extending a Junos Fusion Enterprise Using EVPN-MPLS
play_arrow PBB-EVPN
- play_arrow Configuring PBB-EVPN Integration
- play_arrow Configuring MAC Pinning for PBB-EVPNs
  - PBB-EVPN MAC Pinning Overview
  - Configuring PBB-EVPN MAC Pinning
play_arrow EVPN Standards
- play_arrow Supported EVPN Standards
  - Supported EVPN Standards
play_arrow VXLAN-Only Features
- play_arrow Flexible VXLAN Tunnels
  - Understanding Programmable Flexible VXLAN Tunnels
- play_arrow Static VXLAN
  - Static VXLAN
play_arrow Configuration Statements and Operational Commands
- Junos CLI Reference Overview

list Table of Contents

English

FAT Flow Labels in EVPN-VPWS Routing Instances

date_range 20-Dec-24

arrow_backward

arrow_forward

FAT Flow Labels Overview introduces how LDP-signaled pseudowires in an MPLS network can use flow-aware transport (FAT) flow labels (defined in RFC 6391, Flow-Aware Transport of Pseudowires over an MPLS Packet Switched Network) to load-balance traffic in virtual private LAN service (VPLS) and virtual private wire service (VPWS) networks.

Starting in Junos OS Release 21.1R1, you can enable provider edge devices in an EVPN-MPLS network to use flow-aware transport (FAT) flow labels to load-balance traffic across pseudowires in an EVPN-VPWS routing instance. In this environment, the local and remote devices establish an EVPN connection between the local and remote provider edge (PE) devices using BGP signaling, and can use LDP or RSVP tunnels to create the pseudowire.

How to Enable FAT Pseudowire Flow Labels in an EVPN-VPWS Instance

You can enable FAT flow labels in a routing instance of type evpn-vpws for pseudowires associated with the routing instance.

This environment supports enabling FAT flow label push and pop operations on pseudowire traffic only with a static configuration. The devices don't actively use the signaling mechanism described in RFC 6391 to ensure both ends communicate that they can handle flow labels. As a result, you must use flow-label-transmit-static and flow-label-receive-static (instead of flow-label-transmit and flow-label-receive) on all of the PE routers that will transmit, receive, and load-balance traffic with flow labels.

Note:

We advise that you plan to configure these options during a maintenance window on those devices.

You can configure FAT flow label push and pop operations on the device at either the global routing instance level or at the individual interface level, as follows:

Configure the EVPN routing instance of type evpn-vpws. For example:

content_copy zoom_out_map
set routing-instances VPWS-SH instance-type evpn-vpws
set routing-instances VPWS-SH protocols evpn interface ge-0/0/1.100 vpws-service-id local 100
set routing-instances VPWS-SH protocols evpn interface ge-0/0/1.100 vpws-service-id remote 200
set routing-instances VPWS-SH interface ge-0/0/1.100
set routing-instances VPWS-SH route-distinguisher 10.255.0.1:100
set routing-instances VPWS-SH vrf-target target:100:100

Verify the configuration:

content_copy zoom_out_map
user@device# show routing-instances 

VPWS-SH  { 
    instance-type evpn-vpws; 
    interface ge-0/0/1.100;
    route-distinguisher 10.255.0.1:100;
    vrf-target target:100:100; 
    protocols { 
        evpn { 
            interface ge-0/0/1.100 { 
                vpws-service-id {
                    local 100; 
                    remote 200; 
                }
            }
        }
    } 
} 

To configure FAT flow label push and pop operations at the evpn-vpws routing instance level:

content_copy zoom_out_map
set routing-instances <evpn-vpws-routing-instance-name> protocols evpn flow-label-transmit-static
set routing-instances <evpn-vpws-routing-instance-name> protocols evpn flow-label-receive-static

For example:

content_copy zoom_out_map
set routing-instances VPWS-SH protocols evpn flow-label-transmit-static
set routing-instances VPWS-SH protocols evpn flow-label-receive-static

Verify the configuration:

content_copy zoom_out_map
user@device# show routing-instances 

VPWS-SH  { 
    instance-type evpn-vpws; 
    interface ge-0/0/1.100;
    route-distinguisher 10.255.0.1:100;
    vrf-target target:100:100; 
    protocols { 
        evpn { 
            interface ge-0/0/1.100 { 
                vpws-service-id {
                    local 100; 
                    remote 200; 
                }
            }
            flow-label-transmit-static; 
            flow-label-receive-static;
        }
    }
} 

Alternatively, to enable a specific interface in the evpn-vpws routing instance to push and pop FAT flow labels:

content_copy zoom_out_map
set routing-instances <evpn-vpws-routing-instance-name> protocols evpn interface <interface-name> flow-label-transmit-static
set routing-instances <evpn-vpws-routing-instance-name> protocols evpn interface <interface-name> flow-label-receive-static

For example:

content_copy zoom_out_map
set routing-instances VPWS-SH protocols evpn interface ge-0/0/1.100 flow-label-transmit-static
set routing-instances VPWS-SH protocols evpn interface ge-0/0/1.100 flow-label-receive-static

Verify the configuration:

content_copy zoom_out_map
user@device# show routing-instances 

VPWS-SH  { 
    instance-type evpn-vpws; 
    interface ge-0/0/1.100;
    route-distinguisher 10.255.0.1:100;
    vrf-target target:100:100; 
    protocols { 
        evpn { 
            interface ge-0/0/1.100 { 
                vpws-service-id {
                    local 100; 
                    remote 200; 
                }
                flow-label-transmit-static; 
                flow-label-receive-static; 
            }
        }
    } 
} 

Verify FAT Flow Labels Are Enabled

You can enter the show evpn vpws-instance CLI command to see if an evpn-vpws routing instance is configured to handle FAT flow labels. The output from this command displays Yes in the Flow-Label-Tx or Flow-Label-Rx output fields if you configured the device to insert or remove FAT flow labels on pseudowire traffic in the routing instance. These fields display No if FAT flow label operations are not enabled.

arrow_backward PREVIOUS Example: Configuring VPWS with EVPN Signaling Mechanisms

NEXT arrow_forward Configuring EVPN-VPWS over SRv6

EVPN User Guide

ON THIS PAGE

FAT Flow Labels in EVPN-VPWS Routing Instances

How to Enable FAT Pseudowire Flow Labels in an EVPN-VPWS Instance

Verify FAT Flow Labels Are Enabled

Stay in touch

Helped me install or use the product
Accelerated my deployment

Discuss the product with a co-worker
Make a purchase inquiry

EVPN User Guide

ON THIS PAGE

FAT Flow Labels in EVPN-VPWS Routing Instances

How to Enable FAT Pseudowire Flow Labels in an EVPN-VPWS Instance

Verify FAT Flow Labels Are Enabled

Related Documentation

Stay in touch