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Category: JN0-643 (v.4)

Exam JN0-643: Juniper Networks Certified Internet Professional (JNCIP-ENT) (November 5th, 2014)

which three configuration statements must be added to SW1 to allow ingress STP BPDUs on port ge-0/0/16 to pass

— Exhibit –

— Exhibit —

Click the Exhibit button.
You are asked to allow a customer to tunnel STP BPDUs from Customer Switch1 to Customer
Switch2 for VLAN 300 on S-VLAN v500. You have administrative access to SW1 and SW3, but
not SW2.
Referring to the exhibit, which three configuration statements must be added to SW1 to allow
ingress STP BPDUs on port ge-0/0/16 to pass to SW3 for VLAN 300 only? (Choose three.)

What are two reasons for this problem?

— Exhibit —
[edit protocols]
user@switch# commit
[edit protocols ]
‘mstp’
Another xSTP protocol is enabled
error : Another xSTP protocol is enabled
error: configuration check-out failed
— Exhibit —
Click the Exhibit button.
Referring to the exhibit, a customer is receiving an error while committing the operation on the
switch.

What are two reasons for this problem? (Choose two.)

Which two situations would cause the problem?

— Exhibit —
user@SwitchA# show protocols mstp
configuration-name region1;
bridge-priority 16k;
msti 1 {
bridge-priority 16k;
vlan [10 20];
}
msti 2 {
bridge-priority 8k;
vlan [30 40];
}
user@SwitchB# show protocols mstp
configuration-name region1;
bridge-priority 8k;
msti 1 {
bridge-priority 16k;
vlan [10 20];

}
msti 2 {
bridge-priority 8k;
vlan [30 40];
}
user@SwitchA>monitor traffic interface xe-0/0/0 no-resolve extensive
10:36:00.594220 Out STP 802.1s, Rapid STP, CIST Flags [Forward, Agreement], CIST bridge-id
4000.5c:5e:ab:72:da:41.8215, length 118
message-age 0.00s, max-age 20.00s, hello-time 2.00s, forwarding-delay 15.00s
CIST root-id 4000.5c:5e:ab:72:da:41, ext-pathcost 0 int-pathcost 0, port-role Designated
CIST regional-root-id 4000.5c:5e:ab:72:da:41
MSTP Configuration Name regio-2, revision 0, digest ca136a235706b316c8db8f921067a68f
CIST remaining-hops 20
MSTI 1, Flags [Proposal, Forward, Agreement], port-role Designated
MSTI regional-root-id 4001.5c:5e:ab:72:da:41, pathcost 0
MSTI bridge-prio 4, port-prio 8, hops 2010:36:00.594220
10:36:00.594223 Out 802.1s, Rapid STP, CIST Flags [Forward, Agreement], CIST bridge-id
4000.5c:5e:ab:72:da:41.8215, length 118
message-age 0.00s, max-age 20.00s, hello-time 2.00s, forwarding-delay 15.00s
CIST root-id 4000.5c:5e:ab:72:da:41, ext-pathcost 0 int-pathcost 0, port-role Designated
CIST regional-root-id 4000.5c:5e:ab:72:da:41
MSTP Configuration Name regio-2, revision 0, digest ca136a235706b316c8db8f921067a68f
CIST remaining-hops 20
MSTI 1, Flags [Proposal, Forward, Agreement], port-role Designated
MSTI regional-root-id 4001.5c:5e:ab:72:da:41, pathcost 0
MSTI bridge-prio 4, port-prio 8, hops 20

— Exhibit —
Click the Exhibit button.
Referring to the exhibit, a customer notices that MSTP is not converging on MSTI 2. To
troubleshoot the problem, the customer captured traffic on the link (xe-0/0/0) of SwitchA
connecting to SwitchB.
Which two situations would cause the problem? (Choose two.)


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