Question

Explain how redundant default gateway work? How does it look for an end user?

Answer 1

Default gateway is the following jump address of the gadget that drives the packets out of the nearby LAN portion. In the event that there are packets bound to an IP address that isn't from neighborhood subnet computer will advance those bundles typically to switch gadget that will have the data where to advance those packets so as to get them moved towards the objective. A first hop redundancy protocol (FHRP) is a computer organizing convention which is intended to secure the default passage utilized on a sub network by permitting at least two switches to give reinforcement to that address.

IP hosts has have various methods of choosing which default switch or default door they will utilize. A portion of the strategies are DHCP, BOOTP, ICMP Router Discovery Protocol (IRDP), manual configuration, or some of the time by directing convention. In spite of the fact that isn't ordinarily regular that hosts are running directing conventions, it tends to be finished. Most regular technique is DHCP in light of the fact that is programmed and there is one DHCP worker on pretty much every client LAN section. The other normal arrangement is manual setup that is fundamentally composing the IP address of the default passage into gadget. Result with manual design is obviously in the host realizing a solitary IP address of its default gateway. There can be just one default gateway IP address arranged on pretty much every gadget in the organization it's occasionally a constraint. It essentially makes network has totally dependent on just a single switch when speaking with all hubs that are not on the nearby subnet. There is no repetition and that is the issue.

VRRP, HSRP, GLBP for example Virtual Router Redundancy Protocol, Hot Standby Router Protocol and Gateway Load Balancing Protocol speak to conventions that are making default door repetition conceivable. Issues identified with a host realizing a solitary IP address as its way to get outside the subnet. You arrange one IP address on all gadgets on the subnet and afterward two switches/L3 switches in VRRP,HSRP or GLBP design will cooperate to go about as a solitary gadget utilizing various strategies. VRRP and HSRP will do Active-Passive design and GLBP will likewise have likelihood to work in Active-Active config.