EIGRP Route Selection

[Sonu Upadhyay]

Hi

There's something i could not understand with EIGRP external data and that's about the originating router being listed in External data and not being listed in the external data, in the example below EIGRP sees route for prefix being redistributed via BGP into it but why for one neighbor originating router is listed above external data and in the other in the external data, please help with this . 

Also, the below excerpt shows that eigrp is preferring route from the neighbor that has higher delay and i am failing to understand why so.  Can someone please advise:-

Composite metric is (151296/151040), route is External
Vector metric:
Minimum bandwidth is 25600 Kbit
Total delay is 2010 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
Originating router is 172.34.124.206
External data:
AS number of route is 64520
External protocol is BGP, external metric is 0
Administrator tag is 9730 (0x00002602)
121.244.242.89 (GigabitEthernet0/1/1.2498), from 121.244.242.89, Send flag is 0x0
Composite metric is (307200/281600), route is External
Vector metric:
Minimum bandwidth is 10000 Kbit
Total delay is 2000 microseconds
Reliability is 255/255
Load is 12/255
Minimum MTU is 1500
Hop count is 1
External data:
Originating router is 121.244.242.89
AS number of route is 4755
External protocol is BGP, external metric is 0
Administrator tag is 65529 (0x0000FFF9)

[lespejel]

@Sonu Upadhyay

your router injecting the prefix from BGP shows external data because it's a locally originated topology link from redistribution, and the information says where the prefix came from (BGP's neighbor); then your EIGRP neighbor will receive the topology link coming from the EIGRP originating router, then you will see the EIGRP neighbor as source and not the BGP neighbor, because it's pure EIGRP information.