Hi Kijush,
I tested using one BNG and 4 interfaces. I see BNG is receiving 4 Discover but BNG is sending only one offer and only authentication request sent to radius.
labroot@jtac-mx480-r2046> show dhcp server statistics
Packets dropped:
Total 0
Offer Delay:
DELAYED 0
INPROGRESS 0
TOTAL 0
Messages received:
BOOTREQUEST 8
DHCPDECLINE 0
DHCPDISCOVER 4
DHCPINFORM 0
DHCPRELEASE 0
DHCPREQUEST 4
DHCPLEASEQUERY 0
DHCPBULKLEASEQUERY 0
Messages sent:
BOOTREPLY 2
DHCPOFFER 1
DHCPACK 1
DHCPNAK 0
DHCPFORCERENEW 0
DHCPLEASEUNASSIGNED 0
DHCPLEASEUNKNOWN 0
DHCPLEASEACTIVE 0
DHCPLEASEQUERYDONE 0
labroot@jtac-mx480-r2046> show network-access aaa statistics authentication
Authentication module statistics
Requests received: 1
Accepts: 1
Rejects: 0
Challenges: 0
Timed out requests: 0