EIGRP

EIGRP is a

• Distance Vector protocol
• Link State protocol
• non-proprietary protocol
• Layer 2 protocol

Administrative Distance means

• the trustworthiness of a routing protocol
• how far apart two routers are
• how far you are from your router
• the cost to reach a network

EIGRP sends out

• periodic updates
• updates only when needed
• updates on the hour
• for chinese takeaway

EIGRP

• says HELLO periodically to its neighbours
• says GOODBYE periodically to its neighbours
• asks for updates periodically
• sends out updates periodically

When an EIGRP router sends out an update,

• a receiving neighbour must acknowledge it
• a receiving neighbour ignores it
• the update goes to every router in the Internet
• it always gets lost

EIGRP says HELLO every

• 5 seconds on fast links
• 60 seconds on fast links
• 30 seconds on fast links
• 90 seconds on fast links

A partial update

• only includes information about changed routes
• only goes to those routers affected by the update
• only includes the Cost column from the routing table
• only includes the first routing table entry

A bounded update

• only includes information about changed routes
• only goes to those routers affected by the update
• only includes the Cost column from the routing table
• only includes the first routing table entry

An Autonomous System is

• a collection of networks and routers controlled by one organisation
• a set of routers that needs no human intervention
• an automatic system
• an encrypted set of routers

To see which routers are your EIGRP neighbours,

• show ip eigrp neighbors
• show eigrp neighbors
• show neighbors
• show hello