Many thanks to all those who respond.
OK here is the scenario; focus on network 222.222.222.0
router#sh ip eigrp top IP-EIGRP Topology Table for AS(1)/ID(192.168.100.2)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply, r - reply Status, s - sia Status
P 192.168.100.0/24, 1 successors, FD is 1761792 via Connected, Serial0/1 P 172.16.31.0/24, 1 successors, FD is 2169856 via Connected, Serial0/0 P 172.16.0.0/16, 1 successors, FD is 2169856 via Summary (2169856/0), Null0 P 222.222.222.0/24, 1 successors, FD is 1761792 via 192.168.100.2 (1761792/28160), Serial0/1
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Router#sh ip eigrp top 222.222.222.0 255.255.255.0 IP-EIGRP topology entry for 222.222.222.0/24 State is Passive, Query origin flag is 1, 1 Successor(s), FD is
1761792 Routing Descriptor Blocks: 192.168.100.2 (Serial0/1), from 192.168.100.2, Send flag is 0x0 Composite metric is (1761792/28160), Route is Internal Vector metric: Minimum bandwidth is 2048 Kbit Total delay is 20000 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1
The FD is 1761792 the AD is a direct link into that network so this is just one link!
BW + Delay does NOT = the FD
10,000,000 / 2048 *256 = BW part of the metric
20000 * 256 = delay part of metric
add the two and you should have your metric, do i then add the AD as well? I've tried a few combinations but no luck reaching that figure.
Thanks