Home » Cisco » 350-080 » What does the command “IP ARP synchronize” do in a vPC configuration?
What does the command “IP ARP synchronize” do in a vPC configuration?
A. Synchronizes ARP entries between vPC peers every five minutes
B. Triggers a manual update of ARP entries from the primary peer to the secondary
C. Enables a bulk loading of ARP entries when a vPC peer is restored
D. Uses the peer-keepalive link to maintain ARP table consistency
Correct Answer: C
Explanation/Reference:
Explanation:
Starting from Cisco NX-OS 5.0(2) and 4.2(6), Layer 3 vPC peers synchronize their respective ARP tables. This feature is transparently enabled and helps ensure faster convergence time upon reload of a vPC switch. When two switches are reconnected after a failure, they use Cisco Fabric Services protocol over Ethernet to perform bulk synchronization of the ARP table.
Reference: http://www.cisco.com/c/en/us/products/collateral/switches/nexus-5000-series-switches/design_guide_c07-625857.html#_Toc271759463
C
d