Refer to the Exhibit.
Customer A wants a Layer 3 VPN between their two sites. To support this, you purchase a carrier-of-carriers solution from ISP2. Referring to the topology in the exhibit, how many labels does PE1
push onto data packets destined for PE2?
A.
1
B.
2
C.
3
D.
4
Should be B) 2:
http://www.juniper.net/techpubs/software/erx/junose700/swconfig-routing-vol2/html/bgp-mpls-vpns-config13.html#1316485
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C is correct, in this case there is no PHP because there is a P router in the middle
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the write answer C
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PE1 pushes 2 labels only, the third is pushed by PE3.
The answer is B.
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