How many times are Layer 3 lookups performed on a packet transiting a CRS or ASR9k router?
A. Three times: in the ingress linecard, the fabric, and the egress linecard
B. Once: in the active RP/RSP
C. Once: in the ingress linecard
D. Twice: in the ingress linecard and again in the egress linecard
Answer:A
How many times are Layer 3 lookups performed on a packet transiting a CRS or ASR9k router?
A. Three times: in the ingress linecard, the fabric, and the egress linecard B. Once: in the active RP/RSP C. Once: in the ingress linecard D. Twice: in the ingress linecard and again in the egress linecard