MY CCIE JOURNEY

By far my worst experience of all . The authentication part .. it took me 4 hrs to complete a silly task to config authentication .. not that i dont know topic due to careless ness and lack of bloody concentration ... in fact so many time after repeating the same mistake , i still configured and got used to autonomous system 1 and this made me mad and configured the , but the required was for autonomous 100 i still feel ashamed to configure that badly .. so when you do please be careful about the autonomous system number



#EIGRP AUTHENTICATION SUNDAY DEC 28 2008#

IP AUTHENTICATION KEY-CHAIN EIGRP:

To enable authentication of EIGRP packets, use the
"ip authentication key-chain eigrp" in interface
config mode

"ip authentication key-chain eigrp as-number key-chain"

IP AUTHENTICATION MODE EIGRP:

To specify type of authentication used in EIGRP
packets, use the "authentication mode eigrp" in
interface config mode

CONFIGURE:

Configure authentication to prevent unapproved
sources from introducing authorized or false
routing messages

When authentication is configured , an MD5 keyed
is added to each EIGRP packet in the specified
Autonomous system


accept-lifetime --- sets the time period during which the
authentication key on a key chain is
received as valid

ip authentication key-chain eigrp

key --- identifies authenticaion key on a key chain

key chain --- enables authentication of routing protocols

key-string --- specifies the authentication string of key

send-lifetime --- sets the time period during which an
authentication key on a key chain is
valid to be sent