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Refer to exhibit.
Refer to the exhibit. Given this "debug isdn q921" output, what is the problem with the PRI?
Suggested Answer: C
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Balanced mode provides user load balancing and user failover in the event of an outage. Active/standby mode provides an always on standby node in the event of an outage, but it does not provide load balancing.
Here is a more detailed explanation of the two modes:
Balanced mode:In balanced mode, the IM and Presence Service nodes are configured to work together to provide high availability. The nodes are configured in a redundancy group, and the system automatically balances the load of users across the nodes in the group. If one of the nodes fails, the system automatically fails over the users to the other nodes in the group.
Active/standby mode:In active/standby mode, one of the IM and Presence Service nodes is designated as the active node, and the other nodes are designated as standby nodes. The active node handles all of the user traffic, and the standby nodes are only used if the active node fails. If the active node fails, the system automatically fails over to one of the standby nodes.
41 comments · newest first
LA
Lachelle
11 months ago
I thought the IP address was the main problem here?
CA
Catherin
11 months ago
The PRI is sending keepalives, so it's not that bad.
DA
Darci
11 months ago
Wait, how can we be sure it's not Layer 1?
BO
Boris
11 months ago
I agree, definitely a Layer 2 issue.
JO
Johnetta
12 months ago
Looks like Layer 2 is down on the controller.
KI
Kina
12 months ago
I’m pretty sure if Layer 1 is down, it would affect the whole connection, so I might go with option D, but I need to double-check that.
EL
Elenora
1 year ago
I feel like the output might indicate a configuration issue, but I can't recall if it specifically mentioned an IP address for the PRI.
LO
Lovetta
1 year ago
I think I saw a similar question in our practice tests where Layer 2 was down, so I might lean towards option B.
MA
Man
1 year ago
I remember something about checking Layer 1 and Layer 2 statuses, but I'm not sure which one is the right answer here.
AL
Alverta
1 year ago
This is a good opportunity to apply my knowledge of ISDN protocols. I'll carefully consider each option and try to eliminate the incorrect ones.
MA
Madonna
1 year ago
I'm a bit confused by all the technical details in this question. I'll have to review my notes on ISDN troubleshooting before attempting to answer.
FR
Francesco
1 year ago
Aha, the key here is to identify the layer that's down. The debug output seems to indicate a layer 2 issue, so I'll go with option B.
SA
Santos
1 year ago
Hmm, the debug output shows some keepalives, so maybe the PRI is actually working fine? I'll have to think this through.
LA
Latanya
1 year ago
This looks like a tricky one. I'll need to carefully analyze the debug output to figure out what's going on with the PRI.
NE
Nettie
1 year ago
Wait, the PRI is supposed to send keepalives? I thought it was just supposed to sit there and look pretty. This certification stuff is getting out of hand!
AL
Alfreda
1 year ago
User4: Maybe the PRI does not have an IP address configured on the interface?
AH
Ahmed
1 year ago
User3: Actually, I think the PRI is sending keepalives, so the problem might be something else.
JE
Jenelle
1 year ago
User2: No, I believe the issue is that layer 1 is down on the controller.
AU
Audra
1 year ago
User1: I think the problem is that layer 2 is down on the controller.
ME
Merrilee
1 year ago
Definitely looks like a layer 2 problem to me. That debug output is pretty clear on that. I'd start troubleshooting the controller interface and cabling.
TY
Ty
1 year ago
User 3: Layer 1 being down could also cause this problem, so we need to investigate further.
IN
In
1 year ago
User 2: We should check the cabling and interface settings to fix the issue.
RO
Rosamond
1 year ago
User 1: I agree, the layer 2 is definitely down on the controller.
CH
Chaya
1 year ago
Haha, imagine if the problem was that the PRI just forgot to put on its lipstick. Layer 1 down, that's the classic one!
FA
Fairy
1 year ago
User 3: Fairy, yeah, Layer 2 being down is another common problem.
NE
Nelida
1 year ago
User 2: Nelida, Layer 1 being down is a classic issue with PRI.
MA
Markus
1 year ago
User 1: Haha, that would be funny if the PRI forgot its lipstick.
TI
Tiera
1 year ago
User 3: Layer 2 being down on the controller is also a possibility.
ME
Melynda
1 year ago
User 2: Yeah, layer 1 being down is a common issue with PRI.
AL
Alfreda
1 year ago
User 1: Haha, that would be funny if the PRI forgot its lipstick.
ST
Stefan
1 year ago
I'm not seeing any IP address configuration in that output, so C could be the culprit here. Maybe a configuration problem on the interface?
HE
Helene
1 year ago
D) Layer 1 is down on the controller.
YA
Yasuko
1 year ago
C) PRI does not have an IP address configured on the interface.
BE
Bethanie
1 year ago
B) Layer 2 is down on the controller.
DA
Daron
1 year ago
A) Nothing, the PRI is sending keepalives.
NI
Nicolette
2 years ago
Hmm, looks like the PRI has a layer 2 issue based on that debug output. Keepalives are good, but they won't matter if the physical layer is down.
ST
Stefanie
1 year ago
User 2: Yeah, keepalives won't help if layer 2 is down.
MA
Marguerita
1 year ago
User 1: I think the issue is with layer 2 on the controller.
LA
Lashandra
2 years ago
But what about option A? Could it be that the PRI is just sending keepalives?
DY
Dyan
2 years ago
I agree with Jaclyn, the 'debug isdn q921' output indicates an issue with Layer 1.
JA
Jaclyn
2 years ago
I think the problem is with Layer 1 on the controller.