losing my craz-azy...

has sent me into a tail spin these last few days... my concentration has slipped, my focus shattered... i know nothing and i'm going back to the beginning...

for me going back is not a step back, but a new beginning... i'm erasing my chalk board, emptying the vessel...

the beginning is a perfectly good place to begin, again...

why is it important to know that eigrp adds subnets to it's route table before forming a neighborship...i don't know...

first, it can do this two ways... using the network command it can add prefixes to it's process... that's good... and by redistributing from another routing protocol... ok...

i configured a loopback on a router connected to nothing... before adding the loopback nothing showed up in the routing table... once i added the loopback, the loopback showed up...

r1#sh ip route

Gateway of last resort is not set

      1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        1.1.1.0/24 is directly connected, Loopback0
L        1.1.1.1/32 is directly connected, Loopback0

once i added the eigrp process, and the loopback network, i was left with the same result...and of course when i look at sh ip route eigrp, i get jack...

r1#sh ip route eigrp

Gateway of last resort is not set

however, when i show the topology table, i have a beginning... so the topology table is the key...

r1#sh ip eigrp topo
EIGRP-IPv4 Topology Table for AS(1)/ID(1.1.1.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 1.1.1.0/24, 1 successors, FD is 128256
        via Connected, Loopback0

that's progress...

so to satisfy the other condition, i added ospf and another loopback, 2.2.2.2, still connected to nothing...

r1(config-if)#ip add 2.2.2.2 255.255.255.0
r1(config-if)#router ospf 1
r1(config-router)#netw 2.2.2.0 0.0.0.255 area 0
r1(config-router)#router eigrp 1
r1(config-router)#redistrib ospf 1 metric 1 0 1 1 1500

r1#sh ip eigrp topo
EIGRP-IPv4 Topology Table for AS(1)/ID(1.1.1.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 2.2.2.0/24, 1 successors, FD is 2560000000
        via Redistributed (2560000000/0)
P 1.1.1.0/24, 1 successors, FD is 128256
        via Connected, Loopback0

my beginning has gotten more advanced...  so again, why is it important to know this... seems to me eigrp steps into overdrive before anything really happens...