Linux 第17天: (09月02日) 練習和做業

Linux 第17天: (09月02日) 練習和做業

 

 

 

 

netstat -nt               查看網絡鏈接

netstat -no               查看網絡鏈接win

tasklist |findstr ???     查看進程win

echo 50 > /proc/sys/net/ipv4/ip_default_ttl                  改ttl值
ping -f 10.1.250.95 -s 65507                                 icmp***

echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all             不迴應ping
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts      不迴應廣播

arp  查看arp表
ip neigh 查看arp表

1          1
10         2
100        4
1000       8
10000      16
100000     32
1000000    64
10000000   128

bc
ibase=2
obase=10
2   輸入十進制數
10  算出二進制數

let i=2#1000
echo $i

/etc/udev/rules.d/70-persistent-net.rules 網卡更名
/etc/sysconfig/network-scripts/ifcfg-eth0 網卡配置,含設備名
BOOTPROTO=none 或 DHCP
IPADDR=x.x.x.x
PREFIX=16
GATEWAY=
DNS1=
DNS2=
DNS3=
HWADDR改成MACADDR

 

chkconfig --list NetworkManager
service NetworkManager status
service NetworkManager restart
service NetworkManager stop   臨時關閉
chkconfig NetworkManager off  永久關閉
systemctl status NetworkManager
systemctl stop NetworkManager
service network restart
ifconfig eth0 down 禁用網卡
ifconfig -a 查看全部網卡
route -n   查看路由
cat /etc/resolv.conf  查看dns

 

 

cp ifcfg-eth0 ifcfg-eth0:100 配置網卡別名,多個IP

 

 

bonding多個網卡一個IP實驗

 

vim ifcfg-bond0  bonding

DEVICE=bond0
IPADDR=x.x.x.x
PREFIX=16
GATEWAY=x.x.x.x
DNS1=
BONDING_OPTS="miimon=100 mode=1"

vim ifcfg-eth0

DEVICE=etho
SLAVE=yes
MASTER=bond0

cat /proc/net/bonding/bond0

 

 

 

PC--R1--R2--PC2 實驗

 

chkconfig NetworkManager off  永久關閉
service NetworkManager stop   臨時關閉

vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
IPADDR=192.168.0.1
PREFIX=24

vim /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
IPADDR=10.0.0.1
PREFIX=8

service network restart
route add -net 172.16.0.0/16 gw 10.0.0.2 dev eth1
echo 1 > /proc/sys/net/ipv4/ip_forward
iptable -F

 

chkconfig NetworkManager off  永久關閉
service NetworkManager stop   臨時關閉

vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
IPADDR=172.16.0.1
PREFIX=16

vim /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
IPADDR=10.0.0.2
PREFIX=8

service network restart
route add -net 192.168.0.0/24 gw 10.0.0.1 dev eth1
echo 1 > /proc/sys/net/ipv4/ip_forward
iptable -F

 

 

 

 

rpm -qa "kernel*"
yum -y install kernel-doc
cd /usr/share/doc/kernel-doc-2.6.32/Documentation/
cd networking
less bonding.txt

 

lsmod |grep binding
rmmod binding
ifconfig

 

ethtool -i eth0 查看網卡
dmesg |grep -i eth 查看網卡

 

lsmod |grep e1000
rmmod e1000 卸載網卡驅動
modprobe -r e1000 卸載網卡驅動

 

modprobe e1000 裝載網卡驅動
service network restart

 

locate e1000.ko 查找驅動文件
/lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/net/e1000/e1000.ko
/lib/modules/2.6.32-642.el6.x86_64/kernel/drivers/net/e1000/e1000.ko

 

uname -r
rpm -e kernel-2.6.32-573.e16.x86_64

 

路由
yum -y install quagga

 

cd /etc/quagga
ls
cp ospf.conf.sample ospfd.conf
service ospfd start

 

vtysh 思科相似配置

 

netstat -tunpl

 

route -n
netstat -r 查看路由表

 

ifconfig -s 查看鏈接
netstat -i 查看鏈接

 

watch -n 1 netstat -i
ping -f x.x.x.x

 

ping -a xxxx 經過IP查電腦名
ip link  查看網卡

 

ifup eth1 啓用網卡
ifconfig eth1 up 啓用網卡

 

ifconfig 查看網卡
ip addr 查看網卡

 

ip addr flush dev eth1 清除IP
ip addr add
ip addr del

 

service network restart
systemctl restart network

 

cd /etc/sysconfig/network-scripts/
cp cp ifcfg-eth0 ifcfg-eth1

 

vim /etc/sysconfi/network-scripts/route-eth1 路由配置文件192.168.0.0/24 via 172.16.0.2或者ADDRESS1=192.168.0.0NETMASK1=255.255.255.0GATEWAY1=172.16.0.2## route add -net 192.168.0.0/24 gw 172.16.0.2 dev/eth1