• Bridge 개요
• Linux Bridge
• Linux Bridge 설치
• brctl 명령
• Bridge 설정
• Linux VLAN
• 참고 문헌

Bridge를 정리 합니다.

 

Bridge 개요

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• OSI Layer 2 계층에서 네트워크를 연결

 
 

Linux Bridge

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Linux Bridge 설치

 yum install bridge-utils

 

• vi /etc/sysctl.conf : IP Forward 설정

 

 net.ipv4.ip_forward = 1			#--- Enable Routing, Enable NAT
 ### net.ipv4.conf.eth0.proxy_arp = 1	#--- Enable Routing
 
 ### net.bridge.bridge-nf-call-ip6tables = 0	#--- Disable NetFilter on Bridge
 ### net.bridge.bridge-nf-call-iptables = 0	#--- Disable NetFilter on Bridge
 ### net.bridge.bridge-nf-call-arp6tables = 0	#--- Disable NetFilter on Bridge

 

• Linux Bridge 사용

 

 sysctl -p /etc/sysctl.conf			#--- 변경한 설정 반영
 sysctl -a | grep net.ipv4.ip_forward		#--- 설정 조회
 
 service NetworkManager stop
 chkconfig NetworkManager off
 
 service network restart
 chkconfig network on

 

brctl 명령

 brctl show             #--- Bridge 조회
 brctl addbr br0        #--- br0 Bridge 추가
 brctl delbr br0        #--- br0 Bridge 삭제
 brctl addif br0 eth0   #--- br0 Bridge에 eth0 NIC 추가
 brctl delif br0 eth0   #--- br0 Bridge에 eth0 NIC 삭제
 brctl stp br0 off      #--- br0 Bridge에서 stp off (off : default)

 

Bridge 설정

• br0 Bridge 추가

 

 brctl addbr br0

 

• vi /etc/sysconfig/network-scripts/ifcfg-br0

 

 DEVICE=br0
 TYPE=Bridge
 BOOTPROTO=static
 IPADDR=192.168.100.101
 NETMASK=255.255.255.0
 GATEWAY=192.168.100.1
 ONBOOT=yes
 DNS1=164.124.101.2
 DNS2=203.231.11.118

 

• vi /etc/sysconfig/network-scripts/ifcfg-eth1

 

 DEVICE=eth1
 TYPE=Ethernet
 BOOTPROTO=static
 ONBOOT=yes
 BRIDGE=br0
 USRCTL=no
 IP6INIT=no

 

• vi /etc/sysconfig/network-scripts/ifcfg-eth2

 

 DEVICE=eth2
 TYPE=Ethernet
 BOOTPROTO=static
 ONBOOT=yes
 BRIDGE=br0
 USRCTL=no
 IP6INIT=no

 

• 네트워크 서비스 재기동

 

 service network restart
 ifconfig -a
 brctl show			#--- Bridge 정보 조회

 

Linux VLAN

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• vlan101 (id = 101) VLAN 생성

  • vlan101@eth0

 

 ip link add link eth0 name vlan101 type vlan id 101
 ip link set vlan101 up
 ip -d link show vlan101

 

• vlan101 VLAN 삭제

 

 ip link set vlan101 down
 ip link delete vlan101
 ip -d link show vlan101

 

• vi /etc/sysconfig/network-scripts/ifcfg-vlan5 (id = 5)

  • vlan5@eth0

 

 DEVICE=vlan5
 VLAN=yes
 PHYSDEV=eth0
 TYPE=Ethernet
 BOOTPROTO=static
 IPADDR=10.254.5.254
 NETMASK=255.255.255.0
 VLAN_NAME_TYPE=VLAN_PLUS_VID_NO_PAD
 ONBOOT=yes

 

• vi /etc/sysconfig/network-scripts/ifcfg-eth0.5 (id = 5)

  • vlan5@eth0

 

 DEVICE=eth0.5
 VLAN=yes
 TYPE=Ethernet
 BOOTPROTO=static
 IPADDR=10.254.5.254
 NETMASK=255.255.255.0
 ONBOOT=yes

 

참고 문헌

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• OpenFlow

• Open vSwitch

• http://sgros-students.blogspot.kr/2013/11/comparison-of-brctl-and-bridge-commands.html

• http://sugerent.tistory.com/m/post/376

• http://junleenet.blogspot.kr/2013/12/switchvlan.html

 
 

분류: _Network

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