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F5 Networks 301b Exam - Topic 2 Question 62 Discussion

Posted by Mirta on Dec 12, 2022 at 02:28 PM

A failover event is recorded in the log messages:

Jan 01 00:00:50 BIG-IP notice sod[5855]: 01140029:5: HA proc_running tmm fails action is go offline and down links.

Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c0050:5: Sod requests links down.

Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c0054:5: Offline for traffic group /Common/traffic-group-1.

Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c003e:5: Offline

Jan 01 00:00:50 BIG-IP notice logger: /usr/bin/tmipsecd --tmmcount 4 ==> /usr/bin/bigstart stop racoon

Jan 01 00:00:50 BIG-IP info lacpd[5502]: 01160016:6: Failover event detected. (Switchboard failsafe disabled while offline)

Jan 01 00:00:51 BIG-IP err bcm56xxd[5296]: 012c0010:3: Failover event detected. Marking external interfaces down. bsx.c(3633)

Jan 01 00:00:51 BIG-IP info bcm56xxd[5296]: 012c0015:6: Link: 1.1 is DOWN

Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 0107143c:5: Connection to CMI peer 10.0.0.3 has been removed

Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 0107143a:5: CMI reconnect timer: enabled

Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 01071431:5: Attempting to connect to CMI peer 10.0.0.3 port 6699

What is the cause of the failover?

Suggested Answer: B

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14 comments · newest first
LA
Larae 12 months ago
I agree, the logs point to TMM being the culprit.
JE
Jessenia 12 months ago
Wait, a switchboard failure? That’s unexpected!
SH
Shad 12 months ago
Definitely a system fail-safe issue here.
DU
Dudley 1 year ago
I think it's more about the loss of connection to CMI.
MO
Mozelle 1 year ago
TMM failed, that's clear from the logs.
OC
Ocie 1 year ago
I feel like I read about switchboard failures causing issues, but I can't recall the details. Is option D even a possibility?
CE
Cecilia 1 year ago
I thought VLAN fail-safe was more common, but the logs mention TMM going offline. Could that mean option B is correct?
CL
Clorinda 1 year ago
This seems similar to a practice question where a loss of connection triggered a failover. I think option C might be right.
EM
Emerson 1 year ago
I remember studying failover events, but I'm not entirely sure if TMM failing is the main cause here.
AL
Aliza 1 year ago
This is a tricky one, but I'm feeling confident I can apply the right criteria to select the correct answer.
KA
Kati 1 year ago
I've worked with Kafka before, and I think the answer is HTTPS (SSL/TLS). The REST Proxy is a web service, so it needs to use a secure protocol like that to protect the data being transmitted.
CH
Chara 1 year ago
Wait, does UDP support active/standby groups? I'm not sure about that, I'll have to think it through carefully. The wording of the question is a bit tricky.
AL
Allene 1 year ago
I'm honestly a bit confused here; did we cover the idea of property in radical Islam extensively? I feel like there are different interpretations.
TI
Tien 1 year ago
I'm not sure about the second statement, but I thought living wills were written documents, not oral ones. That really confuses me.
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