Etherchannel

■ 이중화

장비 이중화

HSRP(장애내성), VRRP(장애내성), GLBP(부하분산)

 

회선 이중화

STP(장애내성), Etherchannel(부하분산)

 

Cisco에서 장비 계층 분류

1. Core

2. Distrubution

3. Access

 

■ Etherchannel 구성 (부하분산)

Etherchannel 토폴로지

SW1

conf t
int fa0/1
sw mode access
int range fa0/2-5
sw mode trunk
channel-group 1 mode 

Switch(config-if-range)#channel-group 1 mode ?
  active     Enable LACP unconditionally
  auto       Enable PAgP only if a PAgP device is detected
  desirable  Enable PAgP unconditionally
  on         Enable Etherchannel only
  passive    Enable LACP only if a LACP device is detected
  
  ---------------------------------------------------------
-LacP(Link Aggregation Control Protocol)-표준
Active : 능동모드
Passive : 수동모드

-PagP(Port Aggregation Protocol)-Cisco 전용
Auto : 수동모드
Desirable : 능동모드

-Etherchanneling
On
  ---------------------------------------------------------
  
channel-group 1 mode active

 

SW2

en
conf t
int fa0/1
sw mode access
int range fa0/2-5
sw mode trunk
channel-group 1 mode passive

 

SW1

sh spanning-tree

 

 

■ 부하분산 기준

4:4, 3:3:2, 2:2:2:2, 2:2:2:1:1, 2:2:1:1:1:1, 2:1:1:1:1:1:1, 1:1:1:1:1:1:1:1

 

구성 후 다음 명령어 실행

sh etherchannel summary

 

 

 

Etherchannel-2 토폴로지

 

SW1

en
conf t
int fa0/23
sw mode acc
sw acc vlan 10
int fa0/24
sw mode acc
sw acc vlan 20
int range fa0/1-4
channel-group 1 mode auto
sw mode trunk
int range fa0/11-14
channel-group 2 mode active
sw mode trunk

 

SW2

en
conf t
int fa0/23
sw mode acc
sw acc vlan 10
int fa0/24
sw mode acc
sw acc vlan 20
int range fa0/1-4
channel-group 1 mode desirable
sw mode trunk
int range fa0/16-19
channel-group 3 mode on
sw mode trunk

 

SW3

en
conf t
int fa0/23
sw mode acc
sw acc vlan 10
int fa0/24
sw mode acc
sw acc vlan 20
int range fa0/11-14
channel-group 2 mode passive
sw mode trunk
int range fa0/16-19
channel-group 3 mode on
sw mode trunk

 

■ 실습파일

Etherchannel.pkt

0.06MB