Hi All,
I ran into a scenario below and I am not sure what path router A will choose
to reach the destination network, 10.50.0.0 / 255.255.0.0, on router B.
10.1.1.1 / 255.255.0.0
|
----------S0- Router A-S1-------------
| |
| |
| |
| |
----------S0-Router B- S1--------------
|
E0 = 10.50.1.1 / 255.255.0.0
---------------------------------------------------------------
Router A configuration:
Interface serial 0
ip address 172.16.1.1 255.255.255.0
no shut
Interface Serial 1
ip address 172.16.2.1 255.255.255.0
no shut
Interface Ethernet 0
ip address 10.1.1.1 255.255.0.0
EIGRP 200
network 172.16.1.0
network 10.0.0.0
no auto-summary
ip classless
ip route 10.48.0.0 255.224.0.0 serial 1
----------------------------------------------------------------
Router B configuration
Interface serial 0
ip address 172.16.1.2 255.255.255.0
no shut
Interface Serial 1
ip address 172.16.2.2 255.255.255.0
no shut
Interface Ethernet 0
ip address 10.50.1.1 255.255.0.0
no shut
EIGRP 200
network 172.16.1.0
network 172.16.2.0
network 10.0.0.0
no auto-summary
----------------------------------------------------------
In this scenario, I assume router B knows how to reach 10.1.1.1 using both
serial ports with EIGRP (administrative distance = 90). Router A has two
paths to reach 10.50.1.1 destination: 1st path is learned through EIGRP
with administrative distance of 90; the 2nd path is with the static route
with network 10.48.0.0 and subnet mask of 255.224.0.0 or 12 bits. If I am
not wrong, 10.48.0.0 / 255.224.0.0 will cover a range of IP addresses from
10.48.0.0 to 10.63.255.255; therefore, 10.50.1.1 falls into this scope.
If I do the "show ip route", I will see both routes 10.50.0.0 / 16 and
10.48.0.0 / 12.
My questions are:
1. With those 2 paths to reach 10.50.1.1, which path Router A will choose
as a primary path?
2. If the path between 2 serial 0 of the 2 routers is down, Can router A
reach 10.50.1.1 on router B with such a static route?
Thanks All!
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=19083&t=19083
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