OSPF (Open Shortest Path First) is a link state routing protocol for interior routing within single autonomous system (AS).

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Do symmetrically set up routers/hosts have symmetrical routing tables?

Consider a network of two PCs, PC1 and PC2, connected to each other through a router. Note that the network is symmetrically disposed to PC1 and PC2. Once booted, the PC's run ospfd (over Quagga) and ...
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writing an iptables rule which forward OSPF packets from one interface to another

In a given machine I have got two interfaces eth0 and eth1. Cisco routers are connected, to both interfaces, eth0 and eth1 and I want OSPF packets which arrives on eth0 to be forwarded to eth1 and ...
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Cisco router not receiving OSPF updates

Or at least, that's what I think is happening. There doesn't appear to be a debug command for this, or to see if something is in the routing table. I'm testing out this setup in Packet Tracer. I have ...
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Redistribute OSPFv3 static route to RIPng

I have a IPv6 static route on a Cisco 2600 that is being redistributed to other Routers in the same OSPFv3 area. One of the routers (not the one with the static route) is also a participant in a ...
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How do I get started with setting up OSPF?

I'm a sys admin by trade but I've been tasked with heading up a team that will be implementing OSPF between the different offices in our company. I don't have any experience with OSPF so I'm not sure ...
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Tough routing problem with Linux, Quagga and OpenVPN

The Setup I have an OpenVPN server that acts as a central router. It is configured with "topology subnet" command. Clients are Debian Linux nodes and each have one (or more) subnets directly ...
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What is the difference between BGP and OSPF?

I want to setup a dynamic routing network, I want to know, What is the difference between BGP and OSPF ? Does both two need to be used together commonly ?
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What to do when ping to OSPF multicast address doesn't work?

I'm adding a new router to the OSPF setup. Everything seems to be fine with the configuration but the state remains as INIT/DROTHER. When I do a ping to 224.0.0.5 from the new router all I get is: CB#...
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What will be the best OSPF design option?

A single LAN with several switches and computers exist within a single VLAN behind each router. There are no more routers behind the ones describe on the image. OSPF Area 0 already exists. Router CBA ...
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How to configure machines in a public subnet with two gateways?

We have a single public /24 subnet, with a BGP router as the primary gateway. Now I'm interested in configuring a second router for redundancy. How do I deal with multiple gateways on the servers in ...
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How does ospf control flooding?

What method is used by ospf protocol to prevent looping of flooded packets for link state advertisements? The packet header does not contain any timestamp. How do the routers recognize that it is the ...