In my MX Juniper router device, there have the IP 16.213.40.1
's address:
{master}
admin@juniperMX> show arp no-resolve | match 16.213.40.1
0c:c4:7a:e2:da:3d 16.213.40.1 ae16.48 none
but I can not ping the 16.213.40.1
, and after I deleted the arp
:
clear arp hostname 16.213.40.1
then I ping the address 16.213.40.1 from my router there get success.
and now the MAC still is the same as the 0c:c4:7a:e2:da:3d
.
So, what's the issue of my router arp progress? how to check the issue?
the command (show system statistics arp
) get below information:
admin@juniper> show system statistics arp
arp:
55547805 datagrams received
15585252 ARP requests received
5672166 ARP replies received
1359509150 resolution request received
0 unrestricted proxy requests
0 restricted proxy requests
0 received proxy requests
0 unrestricted proxy requests not proxied
0 restricted proxy requests not proxied
0 datagrams with bogus interface
0 datagrams with incorrect length
0 datagrams for non-IP protocol
0 datagrams with unsupported op code
0 datagrams with bad protocol address length
0 datagrams with bad hardware address length
0 datagrams with multicast source address
1532015 datagrams with multicast target address
378 datagrams with my own hardware address
370965 datagrams for an address not on the interface
794 datagrams with a broadcast source address
1 datagrams with source address duplicate to mine
32382640 datagrams which were not for me
719 packets discarded waiting for resolution
21 packets sent after waiting for resolution
2508270833 ARP requests sent
15585252 ARP replies sent
0 requests for memory denied
0 requests dropped on entry
0 requests dropped during retry
0 requests dropped due to interface deletion
0 requests on unnumbered interfaces
0 new requests on unnumbered interfaces
0 replies for from unnumbered interfaces
0 requests on unnumbered interface with non-subnetted donor
0 replies from unnumbered interface with non-subnetted donor
0 arp packets rejected as family is configured with deny arp
0 arp response packets are rejected on mace icl interface
3594 arp replies are rejected as source and destination is same
0 arp probe for proxy address reachable from the incoming interface
0 arp request discarded for vrrp source address
0 self arp request packet received on irb interface
0 proxy arp request discarded as source ip is a proxy target
0 arp packets are dropped as nexthop allocation failed
0 arp packets received from peer vrrp rotuer and discarded
0 arp packets are rejected as target ip arp resolve is in progress
0 grat arp packets are ignored as mac address is not changed
0 arp packets are dropped from peer vrrp
0 arp packets are dropped as driver call failed
0 arp packets are dropped as source is not validated
Best Answer
Based on the few details you gave there are several possibilities:
You either need to give us a lot more information about your scenario - see https://networkengineering.stackexchange.com/help/how-to-ask for more details - or use packet capturing to find out what's going on.