CCNP Study notes----VRRP (industry standard)

The same principle as HSRP, two physical devices virtual one IP and Mac

Differences from HSRP:

1, role

HSRP Active/standby

VRRP Master/backup

2, virtual address

HSRP cannot be a virtual network address that already exists

VRRP can be a virtual network already exists address

3,Hello packet interval

HSRP master ready to send hello; address 224.0.0.2; interval 3s timeout 10s

VRRP only Master sends hello

Interval 1s timeout 3s

Multicast address 224.0.0.18

4, shootout mode

HSRP Manual Open

VRRP is turned on by default

5, track

Can track an interface

Track only one number.

7,backup takeover into master time 3s+[(256-priority)/256]

Experiment Configuration

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R1:

int e0/0

VRRP 1 IP 10.1.1.254

No shut

VRRP 1 Priority 110

VRRP 1 Track 1 decrement 20

VRRP 1 Authentication MD5 key-string Cisco//Certification

Track 1 interface E0/1 Line-protocol

Show VRRP

R2:

int e0/0

VRRP 1 IP 10.1.1.254

No Shu

When multiple devices are in a group, the lowest priority does not need to be configured for track

VRRP 1 Authentication MD5 key-string Cisco//Certification

Show VRRP BRI//Can manually verify time value 3s+[(256-priority)/256]

CCNP Study notes----VRRP (industry standard)