Unicast Reverse Path Forwarding (uRPF)
Unicast Reverse Path Forwarding (uRPF) Unicast Reverse Path Forwarding (uRPF) is a security feature on Cisco ISR routers and ASA or Secure Firewall Threat Defence (FTD) firewalls, that enables the…
Prevent BGP transit AS
By default, BGP advertises all prefixes to External BGP neighbours. When a router is dual homed to two or more ISP using BGP, the local router could become as transit…
BGP Path Selection
BGP uses several attributes or metrics for the path selection process, this post discusses the BGP attributes used on Cisco IOS-XE routers/switches for path selection and provides configurations examples of…