Jumbo Frame

#Temp
ifconfig bond0 mtu 9000

#Forever
vi /etc/sysconfig/network-script/ifcfg-eth0
新增一行 : MTU 9000

#Check
ip route get 192.168.100.10
ping 192.168.100.254 -l 5000

[root@www ~]# ip route get 192.168.100.10
192.168.100.10 dev bond0 src 192.168.100.254
cache mtu 9000 advmss 8960 hoplimit 64

假如想要提升應用程式的網路速度(如 NFS 或 SMB),則必須針對它們做 Jumbo Frame 的設定,否則他們依舊會以正常大小傳送封包。
1.
{read size = 65536
read prediction = true
socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 SO_RCVBUF=4096
wins support = yes}
2.
{
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_SNDBUF=65536 SO_RCVBUF=65536(65536即最大值)
}

#Cisco 端設定