• Tag : EVPN

 
 

EVPN Centralized Anycast Gateway

Description In the Centralized Anycast Gateway configuration, the Spines are configured with EVPN-IRB and are used as the IP Default Gateway(DWG), whereas the Top of rack switches perform L2 EVPN Routing. EVPN-IRB  supports both Virtual eXtensible Local Area Network (VXLAN) Bridging and IP Routing on the top of rack (TOR) switch.  In a typical EVPN IRB deployment, the IP Default Gateway(DGW) for a host (or VM) is the IP address configured on the IRB interface (check out the EVPN IRB TOI for more detail).   Platform compatibility DCS-7050X* DCS-7050X2 DCS-7050X3 DCS-7300/DCS-7320 DCS-7300X3 DCS-7260X* (DCS-7260X, DCS-7260X2, DCS-7260X3) DCS-7280R, DCS-7280R2, DCS-7280R3 DCS-7500R, DCS-7500R2,...
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Migrating from legacy DC design to EVPN VXLAN Fabric

Introduction This document is intended to provide a reference of steps and sequence followed for:  (1) migrating a legacy 3-tier L2 network to EVPN based VXLAN environment using Leaf & Spine design (2) migrating an L2 Leaf & Spine network with VXLAN using CVX as the control plane to EVPN based control plane (3) migrating an L2 Leaf & Spine network with VXLAN using static VXLAN as the control plane to EVPN based control plane. Scope The key objective of this report is to migrate a Layer 2 datacenter to EVPN based VXLAN using Leaf & Spine (L3LS) solution for...
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EVPN Internetworking with IPVPN

Description This feature adds control-plane support for inter-subnet forwarding between EVPN and IPVPN networks. It also introduces a new BGP path-attribute, D-PATH, that may be used for loop prevention when internetworking between EVPN and IPVPN domains. The supported transport type for IPVPN networks is MPLS, while EVPN networks may use MPLS or VXLAN. The following diagram shows an example topology where a DC EVPN-VXLAN cloud is connected to an MPLS-VPN cloud via border leaf nodes peering with both EVPN and IPVPN. The MPLS-VPN cloud is then connected to a DC EVPN-MPLS cloud, where the border leaf nodes peer with both...
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EVPN VxLAN control plane support for OpenStack

Description This feature enables support for an EVPN VxLAN control plane in conjunction with Arista’s OpenStack ML2 plugin for automated network provisioning. When utilizing this feature: VCS (Vxlan Controller Service) on CVX (CloudVision eXchange) will be responsible for dynamically provisioning VLAN to VNI mappings on switches based on OpenStack configuration The OpenStack service on CVX will be responsible for dynamically provisioning VLANs and allowing them on applicable trunk switchports on switches EVPN will be responsible for distributing and configuring flood lists based on  EVPN type 3 IMET routes and host reachability based on type 2 MAC-IP routes This feature is...
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VCS to EVPN hitless migration

Description This feature enables support for migrating from only using VCS as the control plane to only using EVPN as a control plane in a hitless manner with respect to L2 reachability information. Platform compatibility Platform Independent (Subject to any and all platform compatibility limitations of both VCS and EVPN) Configuration Assume that initially only VCS is configured as the control plane.  The step-by-step migration process is as follows: Check VCS L2 reachability information in L2Rib: Use the following show commands to verify that L2 reachability information is in L2Rib’s input and output: show l2Rib input vxlan-control-service show l2rib input...
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EVPN VxLAN IPV6 Overlay

Description Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from one IPV6 host to another IPV6 host on a stretched VXLAN VLAN. This TOI explains the EOS configuration and show commands. Platform Compatibility Platform supporting ND Proxy and ND Suppression DCS-7280R/7280R2 DCS-7050CX3-32S-F DCS-7050SX3-48YC12-F (Starting in 4.22.1F) DCS-7050SX3-48YC8 (Starting in 4.22.1F) DCS-7050/7050X/7050X2 (Starting in 4.22.1F) DCS-7260X/7260X3 (Starting in 4.22.1F) DCS-7060X/7060X2 (Starting in 4.21.1F) DCS-7250 (Starting in 4.22.1F) DCS-7300/DCS-7320 (Starting in 4.22.1F) Platform not supporting ND Proxy, No ND Suppression  DCS-7020R DCS-7160 DCS-7500R/7500R2/7500E Configuration Enable IPv6 Routing Enable global IPv6 unicast routing and IPv6...
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Problem with EVPN type-5 packet forwarding on vEOS

Hello, I am testing a solution based on VXLAN EVPN, with Type-5 routes, with vEOS 4.23.0.1, but I am having some issues in packet forwarding. The routes are correctly propagated, but when I try to ping from a device connected to one node, on a device connected to another node, the ping does not work. I also tried a ping, with a forced source IP, from the vEOS machine itself, but it has problems too. LEAF-2 LEAF-2#sh ip route vrf gold VRF: gold Codes: C – connected, S – static, K – kernel, O – OSPF, IA – OSPF inter...
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EVPN VxLAN IPV6 Overlay TOI

Description Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from IPV6 host to another IPV6 host on a stretched Vxlan VLAN. This TOI explains the EOS configuration and show commands. Platform Compatibility Platform supporting ND Proxy and ND Suppression DCS-7280R/7280R2 DCS-7050CX3-32S-F DCS-7050SX3-48YC12-F ( Starting in 4.22.1F ) DCS-7050SX3-48YC8 ( Starting in 4.22.1F ) DCS-7050/7050X/7050X2 ( Starting in 4.22.1F ) DCS-7260X/7260X3 ( Starting in 4.22.1F ) DCS-7060X/7060X2 ( Starting in 4.21.1F ) DCS-7250 ( Starting in 4.22.1F ) DCS-7300/DCS-7320 ( Starting in 4.22.1F ) Platform not supporting ND Proxy, No ND Suppression  DCS-7020R...
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VLAN-aware bundle Addition/Removal of VLANs from VLAN set

Description In EVPN, when configuring the member VLANs for a VLAN-aware bundle, the existing configuration command only allows the specification of a VLAN range string, which replaces the previously configured VLAN range string.  This enhancement adds new syntax to add or remove additional VLANs from the currently configured VLAN-aware bundle VLAN list. Platform Compatibility Platform independent Configuration The existing configuration CLI for configuring the member VLANs in a VLAN-aware bundle is: vlan <range>   This takes a VLAN range-string and uses it to replace the currently configured VLAN range-string.  The updated CLI syntax is now: vlan [ add | remove...
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EVPN Control Plane Support for MSS

Description This feature enables support for Macro Segmentation Service (MSS) to insert security devices into the traffic path for VXLAN networks using an EVPN control plane. With this feature enabled, CVX will continue to monitor the network via NetDB state and will initiate intercept and offload rules. With this feature enabled, MAC and IP reachability information will be learned and distributed in user configured L2 domains via EVPN.   CVX will continue to use the Vxlan Controller Service to discover network state and distribute MAC reachability information in service L2 domains (MSS L2 only.) Platform Compatibility Platform Independent (Subject to...
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EVPN – MLAG single homed hosts

Description As described in the Multi-VTEP MLAG TOI, singly connected hosts can lead to suboptimal peer-link utilisation. By adding a local VTEP to each MLAG peer, the control plane is able to advertise singly connected hosts as being directly behind a specific local VTEP / MLAG peer. The multi-VTEP MLAG feature has been extended to add EVPN control plane support. VXLAN bridging (EVPN Type-2 and Type-3 routes) and routing (EVPN Type-5 routes and IRB) are supported by this feature. When multi-VTEP MLAG mode is enabled, outgoing EVPN route advertisements will contain a nexthop and router MAC extended community as summarized...
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EVPN peering not being established

I’m building an EVPN test network using GNS3 (v2.2.0) and vEOS-lab images (4.22.2.1F) basing the configuration on the EVPN Deployment guide. I’ve built a network with 2 pairs of leaf switches & a pair of spine switches (see image). The Underlay BGP network is established fine, and I can reach the endpoints correctly. However when I try and establish the eVPN overlay peerings between the leaf switches and the spines some links never proceed beyond ‘OpenConfirm’ state. spine1(config-router-bgp)#show bgp evpn summary BGP summary information for VRF default Router identifier 192.168.31.129, local AS number 65000.0 Neighbor Status Codes: m - Under...
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SSU support for L2 EVPN with VXLAN

Description Smart System Upgrade (SSU) aims to minimize traffic loss during a software upgrade. The Smart System Upgrade (SSU) process includes the core functionality of Accelerated Software Upgrade, plus additional optimizations that permit a hitless restart of several features. SSU leverages protocols capable of graceful restart to minimize traffic loss during upgrade. For protocols not capable of graceful restart, SSU generates control plane messages and buffers them in hardware to be slowly released when the control plane is offline. Additionally, under SSU, the forwarding ASIC does not get reset and ports do not flap. Starting EOS 4.22.1F SSU is now...
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EVPN mutlihoming w/ ESI

I stumbled upon this archived [post](https://www.reddit.com/r/Arista/comments/azubnz/mlag_or_esi/) while researching EVPN support specifically on the EVPN multihoming side using common ESIs to extend beyond 2 switches in a LAG. Also this is the only post I’ve found mentioning EVPN Multihoming – https://eos.arista.com/arista-layer-2-vtep-evpn-vxlan-route-type-1-support/ but is limited to using mlag only. Does anyone have any information on when there will be support for the EVPN ESI LAGs?

Does 7050SX support L3 vxlan evpn?

I am not able to import evpn from bgp vrf configuration on 7050SX, but able to do same on 7280R2. 7050SX-2(config-router-bgp-vrf-backup-tenant)#route-target import ? ASN(asplain):nn or ASN(asdot):nn or IP-address:nn Route Target Do you mind confirm that whether 7050SX support l3 evpn? Thank you!

BGP VPN and Inter-VRF Local Route Leaking Support for default VRF

Description This feature extends the BGP Layer 3 VPN Import/Export and VRF Route Leaking functionality to “default” VRF. Currently, these functionalities are only supported for non-default VRF. Please refer to this TOI for more details on the support for non-default VRF. EOS supports the following two types of VPN configurations and this feature is applicable for both. RFC 4364 BGP/MPLS L3 VPN (TOI Link) BGP L3 EVPN (TOI Link) This feature is available when configuring BGP in the multi-agent routing protocol model. Platform Compatibility DCS-7250 DCS-7050TX/SX/QX DCS-7060X DCS-7280R DCS-7500R Configuration Configuring BGP VPN in default VRF is similar to how it is...
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EVPN VXLAN All-Active Multihoming

Description Ethernet VPN (EVPN) networks normally require some measure of redundancy to reduce or eliminate the impact of outages and maintenance. RFC7432 [1] describes four types of route to be exchanged through EVPN, with a built-in multihoming mechanism for redundancy. Prior to EOS 4.22.0F, MLAG is available as a redundancy option for EVPN with VXLAN, but not multihoming. EVPN multihoming is a multi-vendor standards-based redundancy solution that does not require a dedicated peer link and allows for more flexible configurations than MLAG, supporting peering on a per interface level rather than a per device level. It also supports a mass...
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EVPN VxLAN IPV6 Overlay

Description Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from IPV6 host to another IPV6 host on a stretched Vxlan VLAN. This TOI explains the EOS configuration and show commands. Platform compatibility Platform Supporting ND Proxy and ND Suppression DCS-7280R/7280R2 DCS-7050CX3-32S-F DCS-7050SX3-48YC12-F ( Starting in 4.22.1F ) DCS-7050SX3-48YC8 ( Starting in 4.22.1F ) DCS-7050/7050X/7050X2 ( Starting in 4.22.1F ) DCS-7260X/7260X3 ( Starting in 4.22.1F ) DCS-7060X/7060X2 ( Starting in 4.21.1F ) DCS-7250 ( Starting in 4.22.1F ) DCS-7300/DCS-7320 ( Starting in 4.22.1F ) Platform Compatibility (No ND Proxy, No ND Suppression) DCS-7020R...
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EVPN MLAG Shared Router MAC

Description “MLAG Domain Shared Router MAC” is a new mechanism to introduce a new router MAC to be used for MLAG TOR Leaf pairs.  The user can have either explicitly configured MAC address of their choice or use the system generated MLAG system-id for this purpose.   When the MLAG shared MAC is set as the MLAG system ID value, the new shared MAC has the following properties: Unlike the bridge MAC which is different on each peer, this MLAG Domain shared router MAC has the same exact value on MLAG peers forming the same MLAG domain. This new shared...
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Layer 2 Data Center Interconnect – Reference Designs

Introduction VxLAN is a popular choice for extending Layer 2 both intra and inter DC using overlays. Arista offers multiple control plane choices for VxLAN: Static HER, CVX and EVPN. In this article, two approaches to designing a L2 DCI over a L3 underlay are discussed. High-level technical details of each design approach is described first, followed by a comparison of the two options along with their typical use cases. Design 1: Multi-domain Overlay In this design, two overlay domains are identified: DC Fabric domain: This is the VxLAN domain within the DC Layer 3 Leaf-Spine Fabric with Leafs acting...
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