does this eigrp topology out look right to you

aueddonline

Does this look right to you guys, am I going crazy or is the FD meant to be the same as the value in the first bracket


R2central#show ip eigrp topology
IP-EIGRP Topology Table for AS(1)/ID(2.2.2.2)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status

P 1.1.1.1/32, 1 successors, FD is 156160
via 10.0.0.1 (7301120/128256), Serial0/0
P 2.2.2.2/32, 1 successors, FD is 128256
via Connected, Loopback2
P 3.0.0.0/8, 1 successors, FD is 3975680
via 10.0.0.1 (7813120/3973120), Serial0/0
via 10.0.1.2 (46866176/2297856), Serial0/1
P 10.0.0.0/24, 1 successors, FD is 7173120
via Connected, Serial0/0
via 10.0.1.2 (47762176/3193856), Serial0/1
P 10.0.1.0/24, 1 successors, FD is 46226176
via Connected, Serial0/1
P 10.0.6.0/24, 1 successors, FD is 4359680
via 10.0.0.1 (8197120/4357120), Serial0/0
via 10.0.1.2 (46738176/2169856), Serial0/1
P 10.0.4.0/24, 1 successors, FD is 3847680
via 10.0.0.1 (7685120/3845120), Serial0/0
via 10.0.1.2 (47250176/2681856), Serial0/1
P 10.0.5.0/24, 1 successors, FD is 4359680
via 10.0.0.1 (8197120/4357120), Serial0/0
via 10.0.1.2 (46738176/2169856), Serial0/1
P 192.168.2.0/24, 1 successors, FD is 30720
via 10.0.0.1 (7175680/28160), Serial0/0

gojericho0

Looks good to me FD is first number in parenthesis AD second number. All feasible successor AD are less then successor FD its correct

aueddonline

it says FD is 156160 and then shouldn't that be the same value instead of 7301120

P 1.1.1.1/32, 1 successors, FD is 156160
via 10.0.0.1 (7301120/128256), Serial0/0



look at this other output, this look right

P 2.2.2.2/32, 1 successors, FD is 2297856
via 10.0.0.2 (2297856/128256), Serial0/0
P 1.1.1.1/32, 1 successors, FD is 128256
via Connected, Loopback1
P 3.0.0.0/8, 1 successors, FD is 3973120
via 10.0.4.2 (3973120/128256), Serial0/1
P 10.0.0.0/24, 1 successors, FD is 2169856
via Connected, Serial0/0
P 10.0.1.0/24, 1 successors, FD is 46228736
via 10.0.0.2 (46738176/46226176), Serial0/0
P 10.0.6.0/24, 1 successors, FD is 4357120
via 10.0.4.2 (4357120/2169856), Serial0/1
P 10.0.4.0/24, 1 successors, FD is 3845120
via Connected, Serial0/1
P 10.0.5.0/24, 1 successors, FD is 4357120
via 10.0.4.2 (4357120/2169856), Serial0/1
P 192.168.2.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0

jezg76

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If a local computation is performed and the distance increases but the route did not become active (FS in topology table), the FD remains unchanged.

I am most certain those smarter than I will chime in with more that I can give at this point.

gojericho0

This will happen when a Successor route is lost and is replaced by a FS or a new route. I believe it can happen as well if a better metric is found. The original successor route will be the first one listed. In your example below it 156160. Did you lose that route and EIGRP use DUAL to promote a FS?

If no FS is available and queriying is used, i believe both FD numbers will be the same because the metric is re-calculated.

P 1.1.1.1/32, 1 successors, FD is 156160
via 10.0.0.1 (7301120/128256), Serial0/0