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Exam ANS-C00 topic 1 question 157 discussion

Exam question from Amazon's ANS-C00
Question #: 157
Topic #: 1
[All ANS-C00 Questions]

You have a static VPN connecting your data center and your VPC. You currently have 50 routes added to your route table. You want to add more; how should you do this?

  • A. 50 is the most you can have for any connection.
  • B. Just add them, you have a maximum of 100 static routes per route table.
  • C. Set up Direct Connect. A VPN will not support more routes.
  • D. Convert your VPN to a dynamic VPN and use BGP.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
A dynamic routing table can support 100 routes. A static can only support 50 per IPv4 and 50 per IPv6. Direct Connect will work, but it would be more than you needed.

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alpha00007
Highly Voted 3 years, 7 months ago
Q: What is the maximum number of routes that can be advertised to my VPN connection from my customer gateway device? A: You can advertise a maximum of 100 routes to your VPN connection from your customer gateway device. For a VPN connection with Static routes, you will not be able to add more than 100 static routes. For a VPN connection with BGP, the BGP session will reset if you attempt to advertise more than 100 routes. i will go with B https://aws.amazon.com/vpn/faqs/#:~:text=A%3A%20You%20can%20advertise%20a,advertise%20more%20than%20100%20routes.
upvoted 9 times
ChauPhan
3 years, 7 months ago
"Advertise" means dynamic BGP routes, not static ones. For static route: max 50 routes
upvoted 2 times
wahlbergusa
3 years, 7 months ago
It says => For a VPN connection with Static routes, you will not be able to add more than 100 static route" Quite clear to me that the answer is B.
upvoted 2 times
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JamesTR
3 years, 7 months ago
@ alpha00007 Link you gave contradicts this one: https://docs.aws.amazon.com/vpc/latest/userguide/amazon-vpc-limits.html Routes per route table (non-propagated routes): 50 Who is right ?
upvoted 1 times
JohnnyBG
3 years, 6 months ago
your link refer to VPC, not route received by on prem on a VPN, Answer is B, can go up to 100 static routes
upvoted 1 times
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wahlbergusa
3 years, 7 months ago
Well it also states that 50 is the default. It can be increased up to 1000.
upvoted 2 times
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Huntkey
Highly Voted 3 years, 8 months ago
D https://docs.aws.amazon.com/vpc/latest/userguide/amazon-vpc-limits.html Routes per route table (non-propagated routes) 50
upvoted 7 times
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sdey0008
Most Recent 2 years, 9 months ago
And Could be D It's not specified the number of routes to add, that may be 10/50/100/200, static route support max 100 to add, hence BGP would be the correct options.
upvoted 2 times
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Joshua555
2 years, 11 months ago
Selected Answer: B
https://docs.aws.amazon.com/vpc/latest/userguide/amazon-vpc-limits.html Routes per route table (non-propagated routes) 50 You can increase this quota up to a maximum of 1,000; BGP advertised routes per route table (propagated routes) 100 I've never heard about dynamic VPN for AWS. I'll go with 'B'
upvoted 1 times
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cdeavila
3 years ago
Selected Answer: B
The asnwer is B , review this: What is the maximum number of routes that can be advertised to my VPN connection from my customer gateway device? A: You can advertise a maximum of 100 routes to your Site-to-Site VPN connection on a virtual private gateway from your customer gateway device or a maximum of 1000 routes to your Site-to-Site VPN connection on an AWS Transit Gateway. For a VPN connection with Static routes, you will not be able to add more than 100 static routes. For a VPN connection with BGP, the BGP session will reset if you attempt to advertise more than the maximum for the gateway type. https://aws.amazon.com/vpn/faqs/?nc1=h_ls
upvoted 1 times
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pentium2000
3 years, 3 months ago
B makes sense. What if that Network engineer Without experiences in BGP, It will be chaos .
upvoted 2 times
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StelSen
3 years, 7 months ago
Option-D is correct. For Static routes it is 50 as a Default limit and can be extended till 1000 max thought performance is going to reduce. BGP supports max 100 and expecting us to advertise to default route if >100. I will go with Option-D
upvoted 5 times
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alpha00007
3 years, 7 months ago
i think D is better solution then
upvoted 5 times
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