网络工程 - 为什么显示 ARPA 不完整？ - 吾爱随笔录

r-tx-server-1#show arp
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  10.199.0.12             0   Incomplete      ARPA
Internet  10.199.0.53             0   Incomplete      ARPA
Internet  10.20.251.30            0   Incomplete      ARPA
Internet  10.20.254.200           0   Incomplete      ARPA
Internet  10.20.254.202           0   Incomplete      ARPA
Internet  10.21.1.21              0   Incomplete      ARPA
Internet  10.23.1.54              0   Incomplete      ARPA
Internet  10.23.1.58              0   Incomplete      ARPA
Internet  10.23.1.99              0   Incomplete      ARPA
Internet  10.23.100.11            0   Incomplete      ARPA
Internet  10.34.1.192             0   Incomplete      ARPA
Internet  10.34.1.20              0   Incomplete      ARPA
Internet  10.34.1.73              0   Incomplete      ARPA
Internet  10.39.0.115             0   Incomplete      ARPA

例如平

r-tx-server-1#ping 10.39.0.115

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.39.0.115, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

我很困惑为什么它是 ARPA Incomplete？