REDUANCY IN NETWORK

Reduancy In Network:
Cisco offers technologies that provide next hop Gateway reduancy.

• HSRP_____Hot standby router protocol.
• VRRP____Virtual router reduancy protocol.
• GLBP____Global load balancing protocol.

HSRP:

• Created by cisco for cisco in 1994.
• uses default Hello timer of 3 seconds.
• uses default Hold time of 10 seconds.

VRRP:

• Created by IETF in 1999.Five years later after HSRP industry standard came.
• Work between multiple vendors.
• Faster than HSRP.
• Default hello timer 1 seconds.
• Default hold timer (Dead timer) 3 seconds.

GLBP:

• Created by cisco for cisco in 2005.
• Identical features to HSRP.
• Load balancing__________Allows Active connection.