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BrainTeaser 2

Wed, 27 Aug 2008 22:37:41 +0000
Well here is another one.
 
 
Scenario:
All routers should be configured in OSPF area 0.
The condition is that R2 only forms adjacency with R1 as long as frame-relay circuit is working fine. If frame relay circuit goes down, and R1-R2 adjacency is lost, R2 should automatically form adjacency with R3.
If frame-relay circuit comes back up, adjaceny between ...]

Amnesty International Joins Bloggers Unite

Wed, 30 Apr 2008 14:51:01 +0000
We have great news! All eyes will be on Bloggers Unite For Human Rights this May 15th because Amnesty International, a worldwide movement that campaigns for internationally recognized human rights, will be joining, supporting, and drawing attention to participating bloggers — and that could mean you!
In addition to promoting the campaign to its hundreds ...]

Unicast Reverse Path Forwarding-Tutorial

Thu, 10 Jul 2008 15:15:07 +0000
Unicast Reverse Path Forwarding is a small security feature

When configured on an interface, the router checks the incoming packet’s source address with its routing table. If the incoming packet’s source is reachable via the same interface it was received, the packet is allowed. URPF provides protection again spoofed packets with unverifiable source.
Though basically a single ...]

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