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Questions tagged [bgp]

BGP (Border Gateway Protocol) is a routing protocol that is primarily used to make routing decisions on today's internet. Questions must be about scripting BGP only. General BGP questions may be asked on https://serverfault.com or https://networkengineering.stackexchange.com

Border Gateway Protocol(BGP) is how the Internet routes traffic between routers. BGP advertises routes for a given IP and selects the best one for the traffic. The current version of the Border Gateway Protocol (BGP) which is BGP-4 is described in RFC4271 (https://tools.ietf.org/html/rfc4271).

Questions about the various BGP scripting languages are on-topic. Questions about BGP (routing, hardware, etc.) in general are not. Sites where you can ask broader BGP questions include

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AWS <-> GCP S2S VPN with dynamic routing - filtering/priority adjustments

I need to setup S2S VPN between AWS and GCP clouds. This needs to work in High Availability and use dynamic routing. On AWS side I have a Transit Gateway with number of VPC networks attached to which I want to attach also the VPN (well, in fact on…
Tomasz Kapłoński
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Looking for a way to verify that an upstream router is publishing my route

I am developing a product feature which allows a user to publish a VIP from our product to their own infrastructure via BGP. To achieve this we run FRR on all control plane servers. FRR is configured to peer with the user's upstream router(s) as…
Matthew Booth
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How to use AS_PATH attribute in scapy for BGP?

I try to set the AS_PATH attribute: setAS=BGPPathAttr(type_flags="Transitive", type_code="AS_PATH",attr_len=None,attribute=None) But Wireshark is saying that it is a malformed AS_PATH attribute. I already have the other mandatory attributes in my…
Luiz Buzza
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How to resolve the issue with BGP Peering with Opendaylight

I`m building a BGP peering between Cisco router (BGP RR-Client) and OpenDaylight (BGP-RR), (ODL - Oxygen release) using the following REST/XML configuration and Postman API call. Cisco router, as well as ODL are in the same AS (BGP AS 65500), but…
LUCCA
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BGP Protocol configuration between two VPC

I would need to configure a cross connect between two networks via SFP Fiber. Unfortunately I'm new on BGP configuration and would need confirmation that I'm doing it on the right way... I have Two VPC: VPC A: ASN 200 IP Router: 169.254.250.1 Sub…
tiamat
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VPN between Azure and pfSense with multiples gateways

I would like to know if is possible create a site to site VPN between Azure and pfSense using multiples gateways for failover.
Jimcesseg
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MetalLB-FRR-BGP route loop?

I may be running into a situation that is completely normal. But I want to talk it out anyway. In my home lab, I have a single worker node Rancher-controlled k3s cluster. I also have a FRR VM acting as the BGP peer to MetalLB within the cluster,…
Scott Balmos
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identify potential prefix hijacking events in BGP update data using Python and pybgpstream

I have to analyze a set of bgp-update-files using python and the pybgpstream with a given routing table file. My task is to analyze these update files regarding prefix hijacking events. As far as I know, analyzing these files means to look for all…
Philipp
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Static to BGP redistribition

how to redistribute static routes in bgp? What is the configuration to be able to do this in packet tracer? Can you give an example in another way. Thank you. Can you help me ??
zyzzbrr1234
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Azure VPN Gateway BGP APIPA Addresses

I'm working with a supplier to implement Active/Active Site-to-Site IPSec tunnels to two different regions in the same geography. The supplier is using Palo Alto firewalls. We've managed to establish both tunnels just fine - IKE and IPSec…
Architect Jamie
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Azure Express route forced-tunneling with NVA

I want to set-up forced tunneling in Azure. All traffic destined to internet should be routed to on-prem and exit to internet from there. As far as i understand i need to advertise default route via BGP in Azure so that it replaces internet default…
MatB
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IBGP over loopbacks on PEs, full mesh still required?

I am going through one video on BGP with IBGP neighbors having multiple paths between them. The author says that ordinarily we will need so many IBGP session between the routers as shown below Then he says that the solution is to form neighbor ship…
Akshay J
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Kubernetes: Calio not working on remote worker, local ok

I setup a Kubernetes cluster with calico. The setup is "simple" 1x master (local network, ok) 1x node (local network, ok) 1x node (cloud server, not ok) All debian buster with docker 19.03 On the cloud server the calico pods do not come…
Yakuraku
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ODL - Open day light DLUX alternatives - needed for BGP Topology graphing and modeling

Are there any Open day light UI alternatives for DLUX, what is really needed is a method to visualize the BGP Topology graphing and modeling Regards Sami
Sami Wehbi
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Undefined reference to `libbgp::BgpFsm::tick()'

I started working with c++ a few weeks ago, and I started a new project to start learning more. I'm encountering an issue with an external dependency. I'm trying to use a library called: libbgp, and I installed it base on their documentation. Here…
David
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