I am having some issues new ISP. I have assigned my sub interface with /29 range of IP given by my ISP. I have added staic route towards gateway of ISP with exit interface( sub interface) specified in Palo Alto Virtual router. Can some tell who will initaite ARP between these interface( its same subnet) When I take the packet capture, only ISP sends the ARP request and Palo Alto interface reply back( arp reply). In Packet capture, I can not see any ARP request initaited from Palo Alto. Its just sending reply. ( i think i got answer this, in packet capture arp requests from PA wont be captured) The problem is after 30 min of arp cacahe in Palo , ARP is not updated in Palo. Why Sub interface of Palo Alto is not sedning ARP request. ISP only send ARP request in the begnning, after that it does not send the ARP request to Palo Alto Interface IP again. However it sends to other IPs in the /29 Subnet.
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