• Author : Kallol Mandal


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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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-7280R3/DCS-7500/DCS-7800 with R3 linecards 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,...
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Virtual IP Failover Support

Description In certain VXLAN deployments with either NSX/Logical Router or EVPN IRB, active nodes hosting a virtual IP address (VIP) are checked (by standby nodes)  to see if the VIP still exists by broadcasting an ARP broadcast request with VIP as the target.  This is similar to how DHCP will ARP and ping an address before leasing it out.  In EVPN with ARP proxying, the VXLAN software client will use its ARP cache to answer the ARP instead of allowing it to go unanswered and thereby defeating the purpose of the above check and a potential failure goes undetected. Furthermore,...
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Provide User Control of Selective ARP

Description Selective ARP install is the selective programming of remote ARPs in hardware as received through EVPN Type 2 MAC-IP routes in an EVPN VXLAN/ MPLS Integrated Routing and Bridging (IRB) scenario. Instead of installing every MAC+IP binding received from EVPN into the hardware, the switch installs them only when there is routed traffic destined to the IP, thereby saving TCAM space on the switch. However, there is a tradeoff as there is an initial one-time latency to install the hardware TCAM entry on the first flow of routed traffic to the IP. In some deployments, it would be preferred...
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