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Ericsson Exam ECP-206 Topic 6 Question 36 Discussion

Actual exam question for Ericsson's ECP-206 exam
Question #: 36
Topic #: 6
[All ECP-206 Questions]

What is an important difference between OSPF and IS-IS?

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Suggested Answer: A

Referring to the exhibit, the service provider should implement L3VPN using the MP-BGP protocol to connect the sites for two customers (indicated in red and green in the exhibit). L3VPN is a type of VPN that uses MPLS to provide IP connectivity between customer sites across a service provider network. L3VPN allows customers to use overlapping or identical IP addresses without causing conflicts or requiring NAT. L3VPN uses MP-BGP to exchange VPN routes between PE routers, which are routers that connect customer networks to the service provider network. MP-BGP is an extension of BGP that can carry multiple address families, such as VPNv4 or VPNv6, along with additional attributes, such as route distinguisher (RD) and route target (RT).RD is used to make customer routes unique within the service provider network, while RT is used to control which routes are imported or exported between different VPNs3.


by Sylvia at Jan 26, 2025, 10:11 PM

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Carlee
13 days ago
Haha, this is a classic trick question! I bet the answer is B, just to mess with us. Those certification exams love to do that.
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Melda
14 days ago
Wait, I'm confused. Isn't it C? I thought OSPF ran on Ethernet and IS-IS ran on IP. Oh, man, I need to review my protocols again.
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Francis
18 days ago
Hmm, I think it's B. OSPF and IS-IS are both link state protocols, not distance vector. I remember learning that in my networking class.
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Rosalyn
23 days ago
I'm pretty sure it's D. OSPF is a link state protocol and IS-IS is a link state protocol too. This one's easy!
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Kristofer
2 months ago
But IS-IS uses a hierarchical structure for routing information.
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Lawana
2 months ago
I agree, OSPF calculates the shortest path using Dijkstra's algorithm.
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Titus
2 months ago
I think the important difference is that OSPF is a link state protocol.
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