summarization help

nathan8

Could someone please explain EIGRP manual summarization.
I know how to figure out the summary address and mask but need to know where to type the commands( interface or config mode).
Do i add the network statements and then the summary address somewhere else.

Nathan

EdTheLad

nathan8 wrote:

Could someone please explain EIGRP manual summarization.
I know how to figure out the summary address and mask but need to know where to type the commands( interface or config mode).
Do i add the network statements and then the summary address somewhere else.

Nathan

Same as ripv2,its done on the interface.Yes you add the networks under
router eigrp 1, and then you summarize on the outgoing interface.I cant remember the exact command off hand.Maybe something like, ip summary address eigrp 1 192.168.0.0 255.255.0.0

rakem

hey, sorry to steal your thread, but im having trouble figuring the summary addresses, do you have any pointers or know of some good websites?

thanks

EdTheLad

rakem wrote:

hey, sorry to steal your thread, but im having trouble figuring the summary addresses, do you have any pointers or know of some good websites?

thanks

For summary addresses just learn the address blocks.
The blocks go like 1,2,4,8,16,32,64,128

If you have a network 10.0.1.x,10.0.2.x,10.0.3.x , now if you look at the thrid octet it changes the network address 1,2,3 if i look at the address blocks, this will fit under ? trying to get the smallest match it will be block 4, subtracting my block from 256 i get 252,therefore my summary would be
10.0.0.0 255.255.252.0
Hope it helps..