BSCI question

interface serial 0

ip address 172.16.1.1 255.255.255.0

!

interface ethernet 0

ip address 10.1.1.1 255.255.255.0

!

router rip

network 10.0.0.0

!

ip route 0.0.0.0 0.0.0.0 serial0

!

As per the output above, which of the following is true?

A. RIP updates are sent and received on interface serial 0 of the router

B. A default route is sent to neighbors on interface serial 0 of the router

C. A default route is sent to neighbors on interface ethernet 0 of the router

D. RIP updates are sent and received on interfaces serial 0 and ethernet 0 of the router

Reply to
Saad Ahmed
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Saad, Normally I would say A only. That's probably the answer that would be considered correct. But I have to qualify that in real life.

I set up router r1 with RIPv1/IOS 12.1(9) just like your example (int e1 is substituted for your s1) and made sure the connected routers were able to ping.

Observed: RIP only sends/receives updates from the interface covered by the NET statement. The default route is not included in any RIP updates. And surprise - updates to e0 are generated BUT SUPPRESSED as there aren't any routes to send (the connected route doesn't need to be sent).

See below. Robert

r1#deb ip rip r1#sh ip route . .. Gateway of last resort is 0.0.0.0 to network 0.0.0.0

172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet1 10.0.0.0/24 is subnetted, 1 subnets C 10.1.1.0 is directly connected, Ethernet0 S* 0.0.0.0/0 is directly connected, Ethernet1 r1# 00:28:52: RIP: sending v1 update to 255.255.255.255 via Ethernet0 (10.1.1.1) 00:28:52: RIP: build update entries - suppressing null update 00:29:19: RIP: sending v1 update to 255.255.255.255 via Ethernet0 (10.1.1.1) 00:29:19: RIP: build update entries - suppressing null update

Reply to
Bob by the Bay

My apologies...correction... I mis-read answer A. I don't see any correct answer. Is there a "none of the above"?

Robert

Reply to
Bob by the Bay

D is the correct answer.

Doan

Reply to
Doan

no "none of the above" :(

Reply to
Saad Ahmed

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