BGP session keepalive and hold times
At the beginning of the BGP peering establishment, the BGP neighbors agree on the hold time value (included in OPEN message): the time a peering would be maintained without the […]
July 3, 2018 Vlan propagation and Cisco FabricPath
PC-A and PC-B belong to the same broadcast domain that is defined by vlan X. Without FabricPath (FP), a frame that is sent by PC-A is received by FP-SW1. PC-1 […]
November 21, 2017 At the begining, … it was not DMVPN!
The simplest way to interconnect 3 or more routers in the same broadcast domain (and the same subnet) is by attaching them to a switch (or hub) in the same […]
November 20, 2017 EIGRP over a vNET trunk
New IOS release 15.x introduced Easy Virtual Network (EVN) functionality to leverage some existing deployment features such as VRF-Lite and QinQ. Its ease of configuration is a real advantage. The […]
November 17, 2017 VPNv4 BGP AS-Override Feature into play!
AS-Override feature applies to sites that have the same AS number and are linked by another AS number. In BGP, loop prevention would prevent any site from learning other site […]
September 17, 2017