MY CCIE JOURNEY

Offset lists:

* Another way to adjust metrics

* No need to modify K-values

* Can be used to manipulate metric for one of the multiple routes pointing to the same destination

Configuration:

* Create an access-list

* Create an offset-list

* ACCESS-LIST 10 PERMIT X.X.X.X Y.Y.Y.Y

* ROUTER EIGRP 4
OFFSET-LIST 13 IN 160000 FA0/0

A metric of 16000 would be added and will replace the old metric which is calculated
Route-summaraisation:

* Turn-off summaraisation with no auto-summary command

* Done under the router eigrp process ROUTER EIGRP 1 ---> NO AUTO

* Interface level summaraisation (this is what we do when we go for manual summaraisation and should be done at interface level)

* INT FA0/0 IP --> IP SUMMARY-ADDRESS EIGRP 1 NETWORK MASK

* Immediately a routing update is sent out

* On local router a summary-address for null0 interface will be generated

* In newer ios images a D route will be generated

Bandwidth:

* Eigrp uses 50% of bandwidth by default

* This may lead to some of the miscalculations which are to be considered crucial in qos and traffic-shaping

* Serial-interface which is t1 line or greater will be considered as 1.5megs as default

* This should be modified with the help of the bandwidth command in the interface level

* Also bandwidth percentage can be controlled with the interface level ip bandwidth-percent command

* ip bandwidth percent eigrp 1 10 to modify the percentage to 10% under as 1