我对aix的网络不了解，帮忙解释一下

我的lsdev -Cc adapter |grep ent
ent0    Available       Logical Host Ethernet Port (lp-hea)
ent1    Available       Logical Host Ethernet Port (lp-hea)
ent2    Available 02-08 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
ent3    Available 02-09 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
网卡是ent2,ent3
我的ifconfig -a
en0: flags=1e080863,c0,64BIT,CHECKSUM_OFFLOAD(ACTIVE),LARGESEND,CHAIN>
       inet 144.64.65.23 netmask 0xffffff00 broadcast 144.64.65.255
        tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en2: flags=5e080863,c0,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
       inet 144.64.65.101 netmask 0xffffff00 broadcast 144.64.65.255
        tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en1: flags=1e080863,c0,64BIT,CHECKSUM_OFFLOAD(ACTIVE),LARGESEND,CHAIN>
       inet 1.1.1.3 netmask 0xffffff00 broadcast 1.1.1.255
en3: flags=5e080863,c0,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
       inet 172.16.1.3 netmask 0xffffff00 broadcast 172.16.1.255
        tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
lo0: flags=e08084b>
       inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255
       inet6 ::1/0
        tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1

使用的是en0,en2，为什么就不是en2,en3呢？？？