Virtual Router Redundancy Protocol (VRRP)

ㅇ S-series 스위치는 총 2000개의 vrrp group, 인터페이스당 512개의 vrrp group을 지원
ㅇ단일 vrrp 그룹 (VRID)에서 최대 12개의 가상 IP 주소 구성가능
ㅇ해당 라우터의 interface IP와 가상 IP address가 동일하면 vrrp priority 값을 255로 설정
ㅇdefault vrrp priority는 100
ㅇvrrp version3에서는 vrrp 인증 지원되지 않음
ㅇPreempt는 default enable
ㅇvrrp priority 255 설정 라우터에서는 tracking 비활성

ㅇExamples of Configuring VRRP for IPv4
The following example shows configuring VRRP for IPv4 Router 2.
R2(conf)#interface tengigabitethernet 2/31
R2(conf-if-te-2/31)#ip address 10.1.1.1/24
R2(conf-if-te-2/31)#vrrp-group 99
R2(conf-if-te-2/31-vrid-99)#priority 200
R2(conf-if-te-2/31-vrid-99)#virtual 10.1.1.3
R2(conf-if-te-2/31-vrid-99)#no shut
R2(conf-if-te-2/31)#show conf
!
interface TenGigabitEthernet 2/31
ip address 10.1.1.1/24
!
vrrp-group 99
priority 200
virtual-address 10.1.1.3
no shutdown
R2(conf-if-te-2/31)#end
R2#show vrrp
-----------------
TenGigabitEthernet 2/31, VRID: 99, Net: 10.1.1.1
VRF: 0 default
State: Master, Priority: 200, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 817, Gratuitous ARP sent: 1
Virtual MAC address: 00:00:5e:00:01:63
Virtual IP address: 10.1.1.3 Authentication: (none)
R2#


Router 3
R3(conf)#interface tengigabitethernet 3/21
R3(conf-if-te-3/21)#ip address 10.1.1.2/24
R3(conf-if-te-3/21)#vrrp-group 99
R3(conf-if-te-3/21-vrid-99)#virtual 10.1.1.3
R3(conf-if-te-3/21-vrid-99)#no shut
R3(conf-if-te-3/21)#show conf
!
interface TenGigabitEthernet 3/21
ip address 10.1.1.1/24
!
vrrp-group 99
virtual-address 10.1.1.3
no shutdown
R3(conf-if-te-3/21)#end
R3#show vrrp
-----------------
TenGigabitEthernet 3/21, VRID: 99, Net: 10.1.1.2
VRF: 0 default
State: Backup, Priority: 100, Master: 10.1.1.1
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 698, Bad pkts rcvd: 0, Adv sent: 0, Gratuitous ARP sent: 0
Virtual MAC address: 00:00:5e:00:01:63
Virtual IP address: 10.1.1.3
Authentication: (none)
================================================
ㅇIPv4 VRRP Group from VRRPv2 to VRRPv3
-priority 값이 낮은 스위치에 both 설정
Dell_backup_switch1(conf-if-te-1/1-vrid-100)#version both
Dell_backup_switch2(conf-if-te-1/2-vrid-100)#version both
-priority 값이 가장 높은 스위치에 version 3 설정
Dell_master_switch(conf-if-te-1/1-vrid-100)#version 3
-다른 모든 스위치에 version 3 설정
Dell_backup_switch1(conf-if-te-1/1-vrid-100)#version 3
Dell_backup_switch2(conf-if-te-1/2-vrid-100)#version 3