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

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EIGRP Neighbor State

I understand that OSPF has states that describe the status of a neighbor (e.g. Init and Full). Does EIGRP also have similar information? I'm programmatically trying to get the status of an EIGRP ...
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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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BGP into OSPF and vice-versa - adding a 'weight' to a route?

This is probably more of a design question. I have two transit providers where I am receiving the full Internet routing table (via BGP) and am also participating in an IX where I am receiving routes ...
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DMVPN and OSPF (two tunnels dynamic routing)

please help me to resolve the problem with routing between dmvpn GRE tunnels. I've got a DMVPN HUB and SPOKE topology. HUB has public ip address in internet. SPOKE has two ISPs for redundancy. I've ...
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Reachability with OSPF on firewalled network

I'm trying to figure out how OSPF establishes routes when used on a network with firewalls. Say I have four routers (A, B, C, and D) and two firewalls (F1 and F2), arranged like so: (LocalA) A - F1 ...
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ospf hello not forwarded

I am trying to change the destination ip of ospf hello packet (224.0.0.5) to link local address using iptables rule (DNAT) . It does not seem to work. A similar rule for unicast packet (BGP control) ...
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OSPF on XEN host running several VMs

Is it possible to set OSPFs areas in a XEN environment to setup a virtual cluster? Main intention is to avoid a external router since all VMs will run inside the same machine.
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Having difficulties routing TCP via OSPF (quagga) generated routes

I have two isolated virtual machines (srv-a and srv-b) broadcasting their cluster address (10.0.1.253/32) via OSPF. A third virtual machine (router) with IP forwarding enabled is receiving these ...
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Need advice on Juniper OSPF networking

I have been thrown in to this project because of a coworker's termination. I have a set of Juniper SRX 550 Routers. I need to create an OSPF network that passes all traffic (All subnets) as if it ...
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322 views

Unable to ping from/to Cisco IOS XE (CSR 1000v)

I have a lab that requires connecting an IOL router and a CSR 1000v (IOS XE). Both are set on Vmware workstation 10 - Win 8 within a proper VMnet. The other routers (IOL and XR) can ping each other ...
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Packet captures of OSPFv2 with HMAC-SHA1 (RFC5709)

I'm looking to get my hands on packet captures showing a hello packet from OSPFv2 configured to use HMAC-SHA1 for authentication, or to find software that supports such a mode that I could use to ...
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How to correctly summarise routes in an OSPF multi-hub-and-spoke scenario?

I am looking at using OSPF/Quagga to provide high availability between a backbone and multiple remote locations (via GRE). I'm unable to get route summarisation working (forgive me if not the correct ...