Refer to the Exhibit.
In the exhibit, on which label value does PE1 expect to receive traffic from CE3 for VPN A?
A.
2002
B.
3001
C.
3002
D.
2001
In the exhibit, on which label value does PE1 expect to receive traffic from CE3 for VPN A?
Refer to the Exhibit.
In the exhibit, on which label value does PE1 expect to receive traffic from CE3 for VPN A?
The right answer is B using the Juniper formula:
LABEL = Local Site ID + Remote Base Label – Remote Offset Lebel
PE1 = 2 + 3000 -1=3001
Right Answer is A only
Transmit label = Remote Base + Local Site ID + Remote Offset
Receive Label = Local Base + Remote Site ID + Local Offset.
As Question asks for receive label answer A is correct.
Ans=A;
L=2000+3-1
A.2002
Explanation
Calculate the Label the router will use to transmit a packet using the following formula.
L2VPN label = Site ID (local) – Label offset (remote) + Label base (remote)
The transmit label for PE1->PE2 will be
(2-1+3000) = 3001
The transmit label for PE2->PE1 will be
(3-1+2000) = 2002