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ARP and VRF

Cisco Freak
Level 4
Level 4

Hi Experts,

I would like to know how a Cisco 6500 would process ARP packets from a switchport that is placed in a VRF.

SW-01#sh run int gi1/3/2 | i vrf
ip vrf forwarding A
SW-01#

SW-01#sh run int vlan 8 | i vrf
ip vrf forwarding A
SW-01#

If a server connected to this switchport sends ARP packet to resolve MAC of another host in same subnet, how does that switch handle it? Does the switch forward that ARP packet to all the switchports in that VLAN OR the switch forwards the ARP query only to the switchport that are part of that VRF? 

1 Reply 1

Predrag Jovic
Level 3
Level 3

I am not sure that access ports can be assign to VRF since VRF is L3 technology, so I guess only routed ports should be possible to assign to VRF. But... even if can what would be justification (to split one VLAN into 2 VLANs)?

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