Hi Laz / Team ,
Please confirm while check show ip eigrp topology table , we see that there is best and back path to reach a destination Network 126.96.36.199/24 , why it not show back up path for other networks i.e 192.168.24.0/24 & 192.168 .34.0/24 . As in show route table , to reach Network 24 & 34 we only consider next hop ip address 192.168.13.3 , i think it is best path for 188.8.131.52/24 that why it show in routing table for other Network but at the topology table it should be present as a backup path to reach both Network (24 & 34 Network ) vai 12.2 (Back up Next hop ip addesss)
#show ip route eigrp
184.108.40.206/24 is sub-netted, 1 sub nets
**D 220.127.116.11 [90/158720] via 192.168.13.3, 00:21:48, Fast Ethernet/0 ( Best path** )
D 192.168.24.0/24 [90/33280] via 192.168.13.3, 00:21:53, Fast Ethernet/0
D 192.168.34.0/24 [90/30720] via 192.168.13.3, 00:21:50, Fast Ethernet 0/0
R1#show ip eigrp topology
IP-EIGRP Topology Table for AS(1)/ID(192.168.12.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 18.104.22.168/24, 1 successors, FD is 158720
**via 192.168.13.3 (158720/156160), FastEthernet0/0 (Best Path )**
**via 192.168.12.2 (412160/156160), Ethernet1/0 (Back -path)**
Question 2 -
If a condition is somehow generate that in eigrp network is not decide to find feasible successor then what happen if best path is down ? advertised distance is lower than the feasible distance of the successor (Condition Not Matched to decide Feasible successor because AD > FD of successor )
Question 3 -
As thoroughly read the article , every-time you consider a destination Network (Loopback ) and due to this you analysis change in toplogy and routing table w.r.t to Router . Suppose if we don 't decided a destination in a network then what happen , please let me know
In above figure , please dont consider loopback 22.214.171.124/24 which is directly connected to R4
In above figure ,I am easily understand to find successor but while deciding Feasible successor
AD is not lower than the FD of succesor ,
My question what it will be shown in topology table and routing table because in route table entry there is only best path which is successor but what will be shown in topology table
Question 5 :-
As we know by default split horizon is enabled due to which routing loop is not created , I want to disbale it and find what changes reflect in topology , routing and debug table . Please share the command and on which interface split horizon should be disabled …I want to apply to disable split horizon on below toplogy and find the changes in network .
Question 6 -
Please confirm is there any possibility that we have only successor entry , suppose , we have 3 path as a best path in toplogy table , then what it will be choose for routing table and if they don’t have any backup (Feasible successor ) ,then what will be shown in both table (topology and routing table ) .
By apply variance command , we want feasible successor reflect in routing table , why others network not shown in toplogy table and routing table .Please explain .
Request you to please a deep context on above question for better understanding.