This chapter describes configuring IP-in-IP tunnels, including encapsulation, decapsulation, TTL management, and load balancing.
IP-in-IP tunnels
This topic describes IP-in-IP tunneling on the Cisco 8000 Series Router, which encapsulates one IP packet as a payload within another IP packet to transport traffic across an intermediate IP network.
Control the TTL value of inner payload header
This topic describes how the Cisco 8000 Series Router controls the TTL value of the inner payload header of IP-in-IP tunnel packets before the packets are forwarded to the next-hop router.
Time-to-Live uniform mode
This topic describes Time-to-Live (TTL) uniform mode on the Cisco 8000 Series Router, a mechanism that synchronizes TTL values between inner and outer packet headers during encapsulation and decapsulation.
IP-in-IP decapsulation
This topic describes IP-in-IP decapsulation on the Cisco 8000 Series Router, which removes the outer IP header of an encapsulated packet so that the router can direct the packet to the next hop through the network.
Hashing for load balancing
This topic describes hashing for load balancing on the Cisco 8000 Series Router, a technique that distributes traffic flows or packets efficiently across multiple available paths, links, or resources.
ECMP hashing support for load balancing
This topic describes Equal-Cost Multi-Path (ECMP) hashing support for load balancing on the Cisco 8000 Series Router, which uses an n-tuple hash algorithm to distribute traffic across multiple equal-cost paths.