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Questions tagged [ip-routing]

281 questions
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auto-summarization: classful vs classless routing protocols

Suppose a router R1 is directly connected to the following subnets: 10.1.0.0/24 10.1.1.0/24 10.1.2.0/24 10.1.3.0/24 If it is running RIPv1, it will advertise: "i have the network 10.0.0.0" (implicitly understood by receiving RIPv1 routers as…
yorble
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IPSec VPN : Traffic not routing correctly

We have a server which is windows 2008 running on a VPS with a single public IP address. I've configured the firewall to allow IPSEC VPN connections to be established with our Draytek routers at remote sites, and the VPS has it's private IP address…
Michael Round
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Configuring ipv6 over radvd using sixxs, routing not working

So this morning, I have been trying to configure IPv6 upon my network using the guide I found on reddit (of all places) at http://ipv6friday.org/blog/2012/06/ipv6-enabling-training/. Now at first glance, this appears to be working, however, the…
Matthew Gall
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iptables asynchronous NAT. packets drop after prerouting table

I have a Centos server acting as a NAT in my network. This server has one external (later ext1) interface and three internal (later int1, int2 and int3). Egress traffic comes from users via int1 and after MASQUERADE goes via ext1. Ingress traffic…
Shamanu4
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IP Routing: How is a dynamic route built on a router?

So I understand that to forward a packet, a router needs 3 pieces of information: next hop, egress interface and Adjacency (L2 information). On a Cisco router, this will be stored in FIB and CEF. What confuses me is that it appears next hop is…
wei
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Forwarding web traffic from one IP to another

We host a web site for a client that is not responding to our requests to change their "A" record for the site (they own the domain). We are migrating soon and we cannot wait for them, nor do we want their site to be down once we migrate. Is there a…
tacos_tacos_tacos
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Linux route cache shows high RTT for loopback - is it normal?

Here are parts of route cache from three different servers that are NOT under high load. # ip route show cache | grep -B 1 rtt local 127.0.0.1 from 127.0.0.1 dev lo cache mtu 16436 rtt 106ms rttvar 155ms cwnd 7 advmss 16396 hoplimit…
darkk
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Network topology for both direct and routed traffic between two nodes

Despite it's small size, this is the most difficult network design problem I've faced. There are three nodes in this network: PC running Windows XP with an internal WiFi adapter.Base station with both WiFi and a Wireless Modem (WiModem)Mobile…
IndigoFire
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Routing my home traffic to another server instead of ISP's default routes

I suspect my ISP has rather poor peering arrangements, causing slow access to several sites that I regularly visit. I determined that fact by proxying my web traffic to a server that I've placed in a data center somewhere nearby and seeing…
feicipet
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proto static metric for overlapping prefixes

Can someone please clarify how the route metric is set by Centos 8 in the following situation. I have two vlans on the system, each of which has a matching route prefix defined in /etc/sysconfig/network-scripts/route-vlanXX. ip route show gives the…
SlyOne
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Cannot connect to Flask server via public IP, only private IP

I have a simple Flask server that echos requests it gets to the terminal. Requests I send it via the device's public IP address do not register. The flask server is started correctly on all interfaces with .run(host="0.0.0.0", port=5000,…
GiovanH
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How to change Public Address of VPS with another IP Address

For a project, I need to make HTTP requests to an external service from a IP address geo-located on "NATION_2". Having an available VPS located in NATION_1, I proceeded to purchase a public IP address geo-located in the correct country. How can I…
Fede91
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linux - routing between bridge networks without overlay

Here's the scenario. There are two hosts in a subnet (both are virtualbox VMs) and both are on the same network 192.168.1.0. I've additionally created two bridge interfaces with separate network slices. Question: Is there a way for the ip on host1…
manikawnth
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How Akamai CDN serves the content from closes edge server to user ?a

After going through some resources on google, got the idea how Akamai CDN edge servers works but got some questions about internals. Say I have got static content cached at Akamai CDN(XXX.XX.XXX.XXX say in seattle) for my site…
user3198603
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Windows Server 2016 Hyper-v host 3 websites in 3 VM with One Public IP

Installed is Windows Server 2016 DCE as host OS. I want to host three websites on three different guest VMs under this host. I got one public IP (5.189.175.xxx), which is assigned to the host. No Website or IIS is currently running on the host. I…
Admin
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