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Exam 300-425 All Questions

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Exam 300-425 topic 1 question 85 discussion

Actual exam question from Cisco's 300-425
Question #: 85
Topic #: 1
[All 300-425 Questions]

An enterprise network administrator is asked to set up an experimental WLAN for a collaboration project with a local service provider. The WLAN must be anchored to a WLC in the service provider data center using legacy mobility mode. After the configurations are completed on the WLCs and the firewalls in the path, the data path mobility tunnel is failing to come up. What should be performed by the administrator to debug the issue?

  • A. Establish a Telnet connection from a local PC to the firewall on port 97.
  • B. Use the eping command on the WLC.
  • C. Establish a Telnet connection from a local PC to the firewall on port 16666.
  • D. Use the mping command on the WLC.
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Suggested Answer: B 🗳️
by wili0001 at Oct. 6, 2022, 3:44 a.m.

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FabriG
Highly Voted 10 months ago
Selected Answer: B
Answer B
upvoted 5 times
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CyborgXCZ
Most Recent 9 months, 1 week ago
Selected Answer: B
I think it's B and again tricky question. First lets look at the matrix https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/113344-cuwn-ppm.html Mobility data traffic is carried via Ethernet over IP (EoIP) which is IP protocol 97 hence firewall rules should allow IP protocol 97 traffic between your WLCs. Now since you cannot telnet just to a port alone with out a valid IP address A: is not correct which leave us with eping which used for testing the data-connection. Yes it's simple but more correct than A:
upvoted 4 times
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Alonzo_Harris
11 months ago
Selected Answer: B
Im thinking B eping is used to test the mobility EoIP data packet communication between two controllers
upvoted 4 times
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AustinP
11 months, 3 weeks ago
Selected Answer: B
A can't be right. Legacy Mobility uses ethernet over IP, which is IP protocol 97. You can't use telnet to connect to that, telnet only does TCP (IP protocol 6). C can't be right. When mobility uses port 16666 it is UDP (ip protocol 17). Telnet only does TCP. Leaves us with B and D. eping is used for testing the data-connection. mping is used for testing the control-connection. The question is about the data-path, so my guess would be that B is correct. https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-5/configuration-guide/b_cg75/b_cg75_chapter_010010001.pdf
upvoted 3 times
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wili0001
1 year, 1 month ago
"the data path mobility tunnel is failing to come up" I think the answer is B. Chapter 8 Pag. 175 table 8-2
upvoted 4 times
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