Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [bgp]

BGP (Border Gateway Protocol) is one of the core routing protocols of the internet.

BGP (Border Gateway Protocol) is a protocol for exchanging routing information between gateway hosts (each with its own router) in a network of autonomous systems.

BGP is known as a path-vector protocol, the routing table contains a list of known routers, the addresses they can reach, and a cost metric associated with the path to each router so that the best available route is chosen.

Resources

176 questions
0
votes
1 answer

Nagios check_bgp_neighbors plugin showing critical status

I am trying to configure nagios check_bgp_neighbors plug-in on Ubuntu and followed README file of check_bgp_neighbors plug-in. I have made following changes: define command{ command_name check_bgp_all command_line …
user141610
  • 5
  • 1
  • 7
0
votes
1 answer

Which routers support bgp and would work well for simple dual office redundancy

We have two sites that each have an internet connection and have a dedicated dark fibre between them. Each site has it's own IP space and we have an AS number. We're looking to be resilient to failure of the internet connection to either site and…
Jona
  • 746
  • 1
  • 9
  • 17
0
votes
1 answer

Will anycast helps me in my case and how to implement it?

I have several servers with different IPs, deployed in different datacenters (mostly geographically close to our users). Let's imagine that this is simple web servers. What I'd like to have is a single IP address for server so all users simple use…
Alexander
  • 774
  • 2
  • 11
  • 20
0
votes
3 answers

BGP Looking Glass

Can your run a looking glass script at home, and see what the BGP route is to a given IP via your cable/dsl provider?
win08r2newbie
  • 97
  • 10
0
votes
2 answers

Visualization of ASes, prefix and the Internet backbone

Last year, I had found a site that had an application (either Java or Flash, I can't remember) that displayed an interactive graph of the ASes in the backbone of the Internet. You could select any AS and see in graph form which were its peers, along…
Juliano
  • 5,512
  • 28
  • 28
0
votes
0 answers

bare-metal k8s zone routing for use with Multus cni

I have a Kubernetes cluster, every node is located in a different network (different data centers) So I need to route a public IP address range to this cluster and use those IPv4 addresses within the cluster using Multus CNI as the second network…
Vahid Alimohamadi
  • 124
  • 6
0
votes
0 answers

Bird2 BGP [unreachable XXXX dev lo proto bird metric 32 pref medium]

The information I have obtained from the supplier is as follows. Router ASN:AS56655 Router endpoint:2a03:94e0:f254:: Your endpoint:2a03:94e0:ffff:185:243:218::43 Multihop:Yes Route table:Full So I did a route trace. root@debian:~# traceroute -s…
Kurei
  • 1
  • 2
0
votes
1 answer

Routing to custom remote destinations from VPCs through dynamic BGP VPN

I have a dynamic BGP VPN between a VPC and an on-premise site (on-premise uses vyOS router/vpn concentrator). Servers in the VPC and on-premise subnets can communicate directly through he VPN. The on-premise site has access to some remote…
Unpossible
  • 249
  • 1
  • 7
  • 20
0
votes
0 answers

Bird imported from BGP doesn't have proper gateways

I'm having troubles in BIRD configuration, Let me share some background. There are 2 hosts, host A is 192.168.0.188, and host B is 192.168.0.224. And created the new IP address on the loopback interface: host A(192.168.0.188) lo.0…
Alvin Kam
  • 1
  • 1
0
votes
1 answer

load balancing with Bird

I have the following routes pushed into my edge router 192.0.10.0/32 via 192.168.166.110 on br166 [master01 22:53:55] * (100) [AS64514?] via 192.168.166.116 on br166 [worker_03 22:53:55] (100) [AS64514?] …
Mazzy
  • 227
  • 3
  • 11
0
votes
1 answer

Will anycast failover to the next server if it encounters a 404 from an nginx server?

I know that anycast will failover for layer 3 issues but will anycast failover if a file is not present? I.E. like a 404? It seems like it won't, like as long as nginx returns something anycast will consider that server healthy.
user970705
  • 3
  • 2
0
votes
1 answer

FRR not sending BGP advertisements on debian 11

I am trying to get bgp working in a lab environment between 4 routers. I have 1 central router and 3 branches. 3 of the 4 machines are debian11 machines and 1 branch is a windows server 2019 which I also set up bgp. "show bgp summary" shows that…
Jaanus maddison
  • 1
  • 1
0
votes
0 answers

BGP: I cannot ping an address even though it exists in the routing table

I have the topology from the attached image with I-BGP neighborship between 192.168.21.1 and 192.168.21.2 and E-BGP neighborship between 192.168.6.1 and 192.168.6.2. I have advertised network 2.2.2.2/32 (loopback address) from R2 and configured…
Alex Dobre
  • 1
  • 1
0
votes
1 answer

Nagios on a virtual network

I am trying to emulate a virtual network in Kathara (ex. NetKit), based on OSPF and BGP routing and I am new to this. After emulating the network I need to monitor it using Nagios, but my question is how is it possible? My virtual network is running…
Jul
  • 1
0
votes
1 answer

AWS Site-to-Site VPN with BGP - how routes are advertized via BGP?

I've configured redundant site-to-site VPN between AWS and GCP with 2 VPN connections, 4 tunnels and BGP dynamic routing. Everything works, all good, servers on both sides of the tunnels can reach each-other. I did that using Terraform and if on GCP…
Dmitry
  • 11
  • 4
1 2 3
…
11
12