The output in the exhibit was captured on an interface. Which three statements are true about the configuration on the router with hostname SaoPaulo? (Choose three.)
A.
Wide metrics is not in use.
B.
The router has the overload bit set to “on”.
C.
Authentication is enabled.
D.
System ID is 1921.6805.2001.
E.
Level 2 routing is enabled.
I Thinks A, C and D are correct answers.
Can you explain why D and not E?
E has to be right, since this is a L2 lsp.
A,C and E are the right answers
Answer D states that your own system ID is below, but that’s not the case your neighbor has the below system-id.
System ID is 1921.6805.2001.
SauPaulo System ID is 1921.6804.8001, so D is incorrect
Could anyone explain why A (“wide metrics is NOT in use”) is correct? TLV 130 and 135 are present in the output, so the wide metrics are in use.
when wide metric is enabled TLV`s 2 and 128 are suppressed.
But we can see TLV appering in the exhibit.
By default, Junos OS supports the sending and receiving of wide metrics. Junos OS allows a maximum metric value of 63 and generates both pairs of TLVs. To configure IS-IS to generate only the new pair of TLVs and thus to allow the wider range of metric values, you must include the wide-metrics-only statement in the IS-IS configuration
That’s right DanyG, wide-metrics-only is the only way to configure wide metrics (in Juniper, dont if it’s a protocol limitation, can someone confirm?), no “normal” TLVs would be present in that case
By default, Junos advertise IP route using both small metric (TLV 128 & 130) and wide metric (TLV 135). But the appearance of TVL 128 & 130 lead router to ignore setting in TLV 135. So i thing “A” is correct
System ID is 1921.6805.2001 so D is also an right answer.