Questions tagged [redundant-routes]

For questions about redundant routes on network devices. For instance, you have two different ISPs, but need to make a redundant routed connection to both. You are struggling with the design and need assistance.

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EIGRP route redundancy in a ring topology

Within GNS3, I am attempting to configure five Cisco 3660 routers in a ring topology with EIGRP, as an early exercise to try and learn how to use EIGRP: These routers and virtual PCs are configured ...
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1answer
64 views

Installing a redundant system in parallel routing

I have a legacy automation system which will be replaced by a newer version. As an fallback option, the new system will be installed in parallel to the old one. But only one will be "in control". Due ...
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1answer
44 views

VDSL to LTE redundancy over 2 different CPEs suitable for small business

We would like to build up a full redundant internet access to our small business location. We have currently VDSL connection and would like to create a redundant connection over LTE as a backup. In ...
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2answers
4k views

How fast can STP, RSTP, and MSTP find a new route?

If I have two switches connected redundantly and both are capable of using STP, RSTP, or MSTP, how quickly can an alternate route be detected and normal communication resume if the main route is ...
4
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1answer
636 views

Vyatta - Redundant ISP Connections?

I have a customer using Vyatta vRouters (Brocade vRouters). They have deployed 2 separate vRouters for redundancy, each with it's own ISP connection. The ISP's are not the same. Does Vyatta have ...
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1answer
554 views

BGP multihoming and Multipath configuration

Below is my architecture Now, I have a 2 MX240 routers terminating diverse path circuits from 2 ISPs. Now, I would like to configure multipath BGP confiugration. If One ISP goes down totally on both ...
2
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1answer
540 views

Route selection in RIPv2 and RIPng (equal hop count)

How do RIPv2/RIPng select between equal routes? Randomly? For example, 2 broadcast domains, 5 routers, all running RIPv2 and RIPng. The | pipes represent a switch: R01 | R02 | R03 | ...
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4answers
3k views

creating redundant links using Cisco SG500 series switches

Trying to design a fault tolerant topology. I will be stacking all switches with the appropriate stacking cables, my main concern is if I can use the other SFP ports to create the redundant links ...
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1answer
1k views

In a multi-homed BGP network I am looking to create a default route to ISP 1 with ISP2 as backup

I do however, need ISP1 to automatically become the primary route once the route is back up. There are only 3 routers in this topology, router 1 and router 3 are connected with ISP1 and ISP2 ...