Network Redundancy Protocols

Redundancy is common point for today's topologies. Especially in mission-critical networks The It is isn't acceptable that using only one gateway to reach a point. Because One gateway means single point of failure.

With multiple gateways, you can still reach the remote node even if that's connect fails. As soon as one of the gateway down, the link changes through and other gateway. Here with the word gateway. I mean the router that router so you use to reach a point, or with redundancy, multiply routers so can use.

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Here-to-connect one point-to-another, a virtual IP used,for example there is-routers that let-to connect another  Point. You build redundancy protocol based neighbourship with only one virtual IP. This virtual IP was also configured on these-routers, if any failure occurs, the traffic was routed from failure to the Back.

There is some protocols for Redundancy,these is:

1. HSRP (hot Standby Router Protocol)

2. VRRP (victual Router redundancy Protocol)

3. GLBP (gatewayload balancing Protocol)

The protocols above, HSRP and GLBP is a "Cisco proprietary" [PR ' Prat () R]. You can use the these only on the Cisco devices.

Another protocol, the VRRP is a "standard based" protocol. You can sue this protocol in all vendor ' s devices, like Juniper and Alcatel-lucent.

We'll discuss there of protocols with a lab example in the following articles.

So, keep on.

Thank you,

Arrow Yang

This article is from the "keepmoving" blog, make sure to keep this source http://arrowyang.blog.51cto.com/10696835/1697860

Network Redundancy Protocols