Category Archives: Networking

Arista MLAG 101

Article from Configure Port-Channel between the switches. Usually you would want to configure at least 2 links in the Port-Channels but 4 or 8 might be required if you have considerable amounts of data between the switches or for redundancy. Port-channel between the switches On both MLAG-1 and MLAG-2 switches Configure VLAN used by MLAG and… Read More »

Cisco FEX short notes

Fabric Extender Terminology Fabric interface – A 10-Gigabit/40-Gigabit Ethernet uplink port that is designated for connection from the Fabric Extender to its parent switch. A fabric interface cannot be used for any other purpose. It must be directly connected to the parent switch. This interface is enabled when you enter the switchport mode fex-fabric command. Host interface… Read More »


Found an interesting article related to VXLAN and Linux so I made a mirror for my own future reference and reading. The original post is located here: VXLAN is an overlay network to carry Ethernet traffic over an existing (highly available and scalable) IP network while accommodating a very large number of tenants. It is defined in RFC 7348.… Read More »

Ordering Azure ExpressRoute circuit in Equinix

If your router is hosted in Equinix DC, you can use Equinix Cloud Exchange Fabric (or simply called ECX Fabric) to have a direct access to Microsoft services. Azure ExpressRoute require redundancy at each peering location and this is mandatory. So when you placed the order for ECX fabric connection, Equinix will give you 2… Read More »

Verifying BGP Routes on Azure ExpressRoute

You have setup the ExpressRoute, you are able to verify the BGP routes received and advertised from the router easily, and now you want to verify the BGP routes from Azure. From Azure Portal, open ExpressRoute circuits and click that … option. There are three interesting options here: View ARP records to see information on… Read More »