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Exam 350-501 topic 1 question 321 discussion

Actual exam question from Cisco's 350-501
Question #: 321
Topic #: 1
[All 350-501 Questions]

SIMULATION -




Guidelines -

This is a lab item in which tasks will be performed on virtual devices.

• Refer to the Tasks tab to view the tasks for this lab item.
• Refer to the Topology tab to access the device console(s) and perform the tasks.
• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
• All necessary preconfigurations have been applied.
• Do not change the enable password or hostname for any device.
• Save your configurations to NVRAM before moving to the next item.
• Click Next at the bottom of the screen to submit this lab and move to the next question.
• When Next is clicked, the lab closes and cannot be reopened.


Topology -




Tasks -

Configure the BGP routing protocol for R1 and R2 according to the topology to achieve these goals:

1. Configure EBGP neighbor adjacency for the IPv4 and IPv6 address family between R1 and R2 using Loopback0 IPv4 and IPv6 addresses. All BGP updates must come from the Loopback0 interface as the source. Do not use IGP routing protocols to complete this task.

2. Configure MD5 Authentication for the EBGP adjacency between R1 and R2. The password is clear text C1sc0!.

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17c8777
6 months, 2 weeks ago
For XR, the config is slightly different than what 12_sDeq mentions : RP/0/0/CPU0:R2#show ru router bgp Sun Nov 24 16:55:00.784 UTC router bgp 65516 address-family ipv4 unicast ! address-family ipv6 unicast ! neighbor 1.1.1.1 remote-as 65515 ebgp-multihop 2 password encrypted 072C705F4D0658 update-source Loopback0 address-family ipv4 unicast ! ! neighbor 2000:cc13:cc13:1::1 remote-as 65515 ebgp-multihop 2 password encrypted 123A540411044D update-source Loopback0 address-family ipv6 unicast ! ! !
upvoted 2 times
sharon90
6 months, 1 week ago
is there a lab question during the exam yet?
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BigMomma4752
1 year, 2 months ago
Is this still on the exam, sure is a lot to remember and to type in correctly. Thanks for the help everyone!
upvoted 1 times
sharon90
6 months, 1 week ago
did you find this out eventually?
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ENTJ
1 year, 9 months ago
Can someone show me how to do this on XR router? I am trying in my lab and I am keep on getting commit error when I try to activate the neighbor.
upvoted 1 times
Martiian
1 year, 5 months ago
do "show configuration failed" --- or something along this line (can't remember exact command). It will show you why the commit is failing. Off the top of my head: - maybe you forgot to activate the address-family globally - maybe you forgot to activate the address-family under the neighbour command... I will check back on this question to see if you replied every few days for about the next 1-2 months.
upvoted 2 times
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Seele
1 year, 10 months ago
I don't think the "." is included in the password.
upvoted 2 times
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nerdymarwa
1 year, 11 months ago
shouldn't we fix it to ipv6 route... for the ipv6 static route?
upvoted 1 times
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Mo_El
1 year, 12 months ago
-Don't forget "ipv6 unicast-routing" to enable ipv6 routing. - other labo For IS-IS, 3 routers enabling ipv4 and ipv6, area and domain password, R1 only support level2 and the other two enable lavel-2 to R1 and Level-1 between them. - (not lab question) a hint for another question to match on icmp traffic look for ip protocol 1.
upvoted 4 times
thejag
1 year, 11 months ago
Thanks!
upvoted 1 times
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Seele
1 year, 9 months ago
If I understand this correctly: R1 - Only L2 Adjacencies allowed R2 - Facing R1 = L2, Facing R3 = L1 R3 - Facing R1 = L2, Facing R2 = L1 right?
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Benxi
2 years, 1 month ago
you can use either egbp-multihop or disable-connect-check ,both not required
upvoted 3 times
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12_sdeEQ
2 years, 2 months ago
The interco subnet is wrong, should be 2000:cc13:cc13:cc13::/64
upvoted 4 times
12_sdeEQ
2 years, 2 months ago
router bgp 65515 bgp log-neighbor-changes neighbor 2.2.2.2 remote-as 65516 neighbor 2.2.2.2 ebgp-multihop 2 neighbor 2.2.2.2 password C1sc0! neighbor 2.2.2.2 update-source Loopback0 neighbor 2000:CC13:CC13:2::1 remote-as 65516 neighbor 2000:CC13:CC13:2::1 ebgp-multihop 2 neighbor 2000:CC13:CC13:2::1 password C1sc0! neighbor 2000:CC13:CC13:2::1 update-source Loopback0 ! address-family ipv4 neighbor 2.2.2.2 activate no neighbor 2000:CC13:CC13:2::1 activate exit-address-family ! address-family ipv6 neighbor 2000:CC13:CC13:2::1 activate exit-address-family !
upvoted 1 times
12_sdeEQ
2 years, 2 months ago
R2 : ! router bgp 65516 bgp log-neighbor-changes neighbor 1.1.1.1 remote-as 65515 neighbor 1.1.1.1 ebgp-multihop 2 neighbor 1.1.1.1 password C1sc0! neighbor 2000:CC13:CC13:1::1 remote-as 65515 neighbor 2000:CC13:CC13:1::1 ebgp-multihop 2 neighbor 2000:CC13:CC13:1::1 password C1sc0! neighbor 2000:CC13:CC13:1::1 update-source Loopback0 ! address-family ipv4 neighbor 1.1.1.1 activate no neighbor 2000:CC13:CC13:1::1 activate exit-address-family ! address-family ipv6 neighbor 2000:CC13:CC13:1::1 activate exit-address-family !
upvoted 1 times
Seele
1 year, 10 months ago
you forgot the neighbor 1.1.1.1 update-source lo0
upvoted 3 times
sharon90
6 months, 1 week ago
and bgp log-neighbor-changes is not necessary for the lab request
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netkna
2 years, 3 months ago
Hi, regarding the multihop: this is required, see https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13751-23.html#ebgploopconfigloop. But the disable-connected-check is not required, see the same URL and this one: https://ipwithease.com/using-disable-connected-check-in-cisco-bgp/
upvoted 1 times
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MSoares
2 years, 4 months ago
Hello, I think there is 2 errors: 1) the ipv6 command should be: ipv6 route 2000:cc13:cc13:XXXXX 2) It is not asked to configure multihop in this specific case.
upvoted 1 times
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