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An export policy is applied on a router to advertise a prefix to its eBGP peers. By default, which of the following updates are made to the route attributes?
Suggested Answer: C
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27 comments · newest first
EM
Emeline
11 months ago
I agree, that's how it works in most cases!
GI
Gianna
11 months ago
Wait, COMMUNITY is set to the local AS number? Really?
DO
Douglass
11 months ago
Definitely, AS_PATH gets the local AS number added.
LI
Ling
11 months ago
I thought NEXT_HOP was always the neighbor's IP!
CA
Casie
12 months ago
LOCAL_PREFERENCE is usually set to 100 by default.
JO
Johana
12 months ago
I feel like COMMUNITY attributes might relate to the local AS, but I don't know if that's the default setting when advertising prefixes.
KR
Krissy
1 year ago
I practiced a question like this where AS_PATH was mentioned, but I can't remember if the local AS number gets added automatically.
DE
Deangelo
1 year ago
I remember something about NEXT_HOP being the neighbor's IP, but I can't recall if that's the default behavior when exporting prefixes.
NI
Nina
1 year ago
I think LOCAL_PREFERENCE is usually set to 100 by default, but I'm not entirely sure if that's for eBGP specifically.
WI
Winfred
1 year ago
Ah, I remember this now. When advertising a route to eBGP peers, the NEXT_HOP attribute is set to the neighbor's interface IP. I'm pretty sure that's the right answer.
YU
Yuki
1 year ago
Okay, let's see. The key here is to remember how BGP handles route advertisements to external peers. I think the answer is B, but I'll double-check my notes just to be sure.
LY
Lyla
1 year ago
Hmm, I'm not too sure about this. I know we covered BGP route attributes in class, but I'm having a hard time remembering the specifics. I'll have to think this through carefully.
SH
Shawna
1 year ago
This looks like a pretty straightforward BGP question. I'm pretty confident I can handle this one.
AF
Afton
1 year ago
I remember practicing a similar question where we had to prevent form submission. I think adding return false after the alert makes sense.
MI
Minna
1 year ago
I'm a bit confused by this question. There seem to be a lot of potential causes listed. I'll need to really think through the zone boot process and what kinds of issues could arise.
CA
Candra
2 years ago
I agree with Lashaunda, the correct answer is A.
LA
Lashaunda
2 years ago
But doesn't the export policy set LOCAL_PREFERENCE to 100?
MA
Matthew
2 years ago
B is the way to go. Setting the NEXT_HOP to the neighbor router's interface IP address is like giving the package the right address to reach its destination.
YO
Yong
2 years ago
Exactly! It's important for the package to know where to go next.
HE
Heidy
2 years ago
B) NEXT_HOP is set to the neighbor router's interface IP address.
BR
Brandon
2 years ago
I believe it's B.
LA
Lashaunda
2 years ago
I think the answer is C.
SY
Sylvie
2 years ago
D sounds good to me. Setting the COMMUNITY to the local AS number is a nice touch, like adding a personalized note to the package.
NI
Nikita
2 years ago
I think the correct answer is C. The local AS number is added to the AS_PATH. It's like adding your signature to the envelope before sending it off.
BR
Brittni
2 years ago
It's an important step in BGP routing to maintain the integrity and authenticity of the advertised routes.
BI
Billy
2 years ago
That's correct, it helps identify the origin of the route as it travels through different ASes.
CH
Chauncey
2 years ago
I agree, adding the local AS number to AS_PATH is like signing the route before sending it out.