In my Juniper router the interface always send ARP requests for some non-using IP address.
Is there any issue there?
and whether there is a way of Juniper to avoid the vast ARP requests?
Is it normal there have so many ARP requests?
Edit-01
and in other Juniper router, there is another issue:
....
19:21:17.207967 In arp who-has 40.21.158.134 tell 40.21.158.129
19:21:17.207987 Out arp reply 40.21.158.134 is-at d0:07:ca:0b:63:0c
19:21:17.891603 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:18.807865 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:21.333322 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:22.256325 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:22.974378 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:23.581650 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:24.289537 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:25.393399 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:26.198545 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:27.106570 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:27.910819 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:28.511469 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:29.713391 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:30.317394 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:31.018756 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:31.530481 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:32.137657 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:33.699346 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:34.268401 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:35.186173 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:35.796321 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:36.407914 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:38.818351 Out arp who-has 40.17.42.131 tell 40.17.42.134
19:21:38.935274 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:39.460692 Out arp who-has 40.17.42.131 tell 40.17.42.134
19:21:39.663202 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:40.373898 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:40.375047 Out arp who-has 40.17.42.131 tell 40.17.42.134
19:21:41.084739 Out arp who-has 40.17.42.131 tell 40.17.42.134
19:21:41.084927 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:41.900625 Out arp who-has 40.17.42.132 tell 40.17.42.134
19:21:42.003071 Out arp who-has 40.17.42.131 tell 40.17.42.134
19:21:42.671415 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:43.422088 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:44.237351 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:44.800125 In arp who-has 40.21.158.134 tell 40.21.158.130
19:21:44.800143 Out arp reply 40.21.158.134 is-at d0:07:ca:0b:63:0c
19:21:44.843554 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:45.453770 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:47.853272 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:48.660676 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:49.460576 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:50.160462 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:50.760365 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:55.526428 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:56.314292 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:56.925603 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:57.638616 Out arp who-has 40.17.42.133 tell 40.17.42.134
19:21:57.658446 In arp who-has 40.21.158.134 tell 40.21.158.129
19:21:57.658466 Out arp reply 40.21.158.134 is-at d0:07:ca:0b:63:0c
....
You see the Server(40.21.158.129
) ARP request at 19:21:17.207967
, but it request again at 19:21:57.658446
. we know the ARP record in general is 2 minutes, why there request so frequently?