DOCKER OVERLAYS ON CISCO ACI

I started the new year troubleshooting Docker Overlay network traffic pushed through a Cisco ACI fabric that was not working despite physical connectivity and contracts being in place. Or so we thought... as VXLAN encapsulated packets (used by Docker overlays) do not follow the usual expected pattern.

20180104 | net | #cisco #dc #docker #linux #tshoot

DMVPN-OVER-MOBILE BLUES

It all started a while ago with a log message found on the hub of a large DMVPN/IPSEC deployment over mobile Internet connections. Given the increasing number of deployments that use the Internet as a cheaper, faster WAN for either primary or backup, I thought it would be useful to document the problems and the two main solutions.

20170211 | net | #cisco #routing #wan #tshoot