查看MTU

用netstat查看MTU:

[tym@lxy ~]$ netstat -i
Kernel Interface table
Iface       MTU Met    RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500   0   163969      0      0      0     1412      0      0      0 BMRU
lo        16436   0     1404      0      0      0     1404      0      0      0 LRU

用ifconfig查看MTU:

[tym@lxy ~]$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0C:29:4F:BF:59
          inet addr:10.10.136.183  Bcast:10.10.136.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe4f:bf59/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:287498 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5827 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:27930063 (26.6 MiB)  TX bytes:1569444 (1.4 MiB)
          Interrupt:67 Base address:0x2024

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1404 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1404 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2045421 (1.9 MiB)  TX bytes:2045421 (1.9 MiB)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)