• Author : Deepan Jayaraj

 
 

Troubleshooting EVPN IRB with VXLAN

Overview This article provides a brief introduction to EVPN IRB with VXLAN along with basic debugging methods for the same. Introduction Ethernet VPN (EVPN) is an extension of the MP-BGP protocol introducing a new address family. EVPN is used as a control-plane for VXLAN environments to exchange information such as MAC addresses and ARP bindings along with VTEP flood list. Additionally,  IP prefixes can be exchanged in the overlay using Type-5 routes.  Platform Compatibility The below table captures the EVPN IRB support for a few Arista platforms: on the platforms listed below:   Platform Feature Support EOS Release 7050X/ 7300X/...
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Dot1q tagged LACPDU

Introduction This document provides details on how 802.1Q tagged LACP packets are handled on our Arista device. 802.1Q tagged LACP PDUs The LACP PDU frames were ingressing from other vendors into an Arista switch with an 802.1Q tag and designated as VLAN 0. 10:03:58.521076 58:ac:78:f2:8c:05 > 01:80:c2:00:00:02, ethertype 802.1Q (0x8100), length 128: vlan 0, p 0, ethertype Slow Protocols, LACPv1, length 110 10:03:59.421028 58:ac:78:f2:8c:05 > 01:80:c2:00:00:02, ethertype 802.1Q (0x8100), length 128: vlan 0, p 0, ethertype Slow Protocols, LACPv1, length 110 Natively, EOS discards tagged LACP PDUs as they are out of spec. These discards can be observed using the...
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LACP Rate Fast

Introduction The LACP rate fast feature is used to set the rate (once every second) at which the LACP control packets are sent from partner. The normal rate at which LACP packets are sent is 30 seconds. This document provides workflow of the LACP rate fast feature including the packet capture and some recommendations/concerns in MLAG setup. How it works When LACP is synchronizing between two device LACP PDUs are sent at a rate of 1 per second until both sides are synchronized. Once this is complete they are sent at a rate of 1 per 30 seconds. LACP Rate...
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