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For questions about routing, the process of selecting to which network path traffic is sent. Consider using a more specific tag if your question is about a routing protocol like BGP or OSPF.

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Can a webpage affect another device on the same network? [on hold]

The following just happened to me: While i was browsing a site on my pc i used my phone to google for something. Instead of showing the search results i was redirected to the same page that was open ...
1
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1answer
23 views

Create Accounting for Internet and merge ADSL, is there any way? [on hold]

I have 4 Simple Wireless ADSL Modem that 4MB, 8MB, 16MB, 40MB Internet BW. I have one HP Server with 4 Network Ethernet Ports. I have 7 LAN based PC's, 2 Network Printer and some wireless station ...
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0answers
61 views

Sophos UTM WAN interface doesn't respond to ARP requests

I've sent this very question to Sophos Support but I feel that asking here might increase my chances to get an answer. The short question is: what could be the reason for my Sophos UTM VM WAN ...
0
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2answers
48 views

EIGRP Routing Issues

I had an issues about EIGRP. But first, here's the topology : I've done EIGRP Routing, but it's kinda strange. PC0 -> PC1 is able to ping, PC3 -> PC2 is able to ping. But, I can't ping PC0 -> PC2, ...
0
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1answer
18 views

Connect office to multiple customer VPNs

First time post here so if this is off topic please let me know where to ask this question. A company that provides outsource billing services to multiple client companies using VPNs to each remote ...
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0answers
20 views

Juniper Filter-Based Forwarding

We have the following Juniper MX80 setup: set interfaces ae2 unit 200 description ISP1 set interfaces ae2 unit 200 vlan-id 200 set interfaces ae2 unit 200 family inet address 200.200.200.2/30 set ...
0
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1answer
23 views

Cannot reach 4th hop, pc as router, static routing

I'm trying to set a PC as a Router and somehow it's not working correctly. I have following setting: CLIENT A 192.168.21.1/28 l l 192.168.21.5/28 ROUTER X 192.168.21.25/28 l l 192.168.21.17/28 CLIENT ...
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0answers
10 views

How can I get the internet to see my back router and devices connected to it [closed]

hope someone can assist. I ran into problems with a web developer finding difficulty in editing through a geoblocking DNS on a Speedport modem/router. Solved using another router TP-Link connected to ...
4
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2answers
63 views

Network Ten LTE Hubs Into One Network

I'm working through a tricky situation getting a field office set up out in a very rural area. There are ten 12' x 60' trailers being set up (2-3 metres apart from one another), each with varying ...
0
votes
1answer
48 views

connecting two different pfsense on different network [closed]

I am trying to connect pcs on two different pfsense on two different network. The diagram below shows what I am looking for. I am trying to establish a connection between nodes in WAN1 and nodes in ...
2
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2answers
40 views

Cisco Router 1800 series doesn't route internet

Working on an issue with a 1800 series Cisco Router. Router get's Internet just fine, can ping Google, Microsoft, etc.. Router is connected to a switch, switch connects 2 workstations running Windows ...
0
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1answer
21 views

Add a flow to OVSK for communication

I have created a torus topology in mininet by enabling sflow and connecting to POX controller for topology discovery. Below is the command. sudo mn --custom=sflow-rt/extras/sflow.py --link tc,bw=10 --...
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1answer
24 views

ASA static routes

I have an Interface (IF1) with 172.16.18.254 255.255.255.0 security Level 0. This one connects to a Firwall where the network 172.16.18.0 255.255.255.0 is located and the gateway to this is 172.16....
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2answers
35 views

BGP new subnet announcement

I have above scenario where I got public IP subnet got from ISP 74.100.100.0/23 and i have configured eBGP and iBGP as you can see in diagram, I have configured those Public IP in HSRP my LAN side. ...
5
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3answers
90 views

What is the different between routing table and forwarding table?

What is the different between a routing table and a forwarding table?
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1answer
23 views

Routing and Bridging on a Layer 2 or Layer 3 device

The thing that intrigues me is, say I have a router and I configure it’s interface as a Layer 2 and have 2 Vlans on the same router. So if I want to transfer the data from one Vlan(say VLAN-10) to ...
1
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3answers
63 views

how to do inter vlan for same subnet

I configure two same subnet network(ip:192.168.0.2 & ip:192.168.0.3) into VLAN...so they wont communicating with each other...but now i want them to communicate with each other... For that i ...
1
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1answer
29 views

Help with this acl

This is what i am trying to do Deny the network that host 200.200.200.10 is on, telnet access to R3 Permit host 200.200.200.10 to telnet to R3 Deny host 200.200.200.10 all access to host 204.10 on ...
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3answers
71 views

How do routers intercept packets?

I'm trying to learn about iptables and port forwarding and I'm running into a very simple hurdle. If my understanding is correct, this concept applies when there is a local area network, a router, and ...
3
votes
1answer
70 views

ISP lab GNS3 - BGP route exchange

I'm trying to develop an understanding of the WAN/ISPs. Eventually I'll build up to MPLS, but for now I'm trying to lab up a notional, basic ISP: R1, R2, and R4 are PE routers. They've successfully ...
1
vote
2answers
36 views

Route traffic through Debian server [closed]

I am developing software where I have a Listener and multiple Clients which connect to this listener. During development I hard code the Listener IP address which all Clients connect to, however this ...
1
vote
1answer
381 views

How should I connect two sites through the internet? [closed]

I have two sites which are 3km away from each other, both sites have internet access from the same ISP. I would like both sites to have access to each other throught the internet routers (TP-Link TD-...
0
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1answer
35 views

How ARIN IP Address is used in APNIC Region? [closed]

Amazon AWS provides the following JSON (Source) which has list of IP Address ranges used by AWS. { "ip_prefix": "54.179.0.0/16", "region": "ap-southeast-1", "service": "EC2" ...
8
votes
2answers
603 views

routing between vlans not working

I need to put a Cisco router behind an ISP router. (The ISP doesn't allow us to use their modem only.) I've called the ISP technical service and they've set up the connection with me. Their router ...
1
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3answers
55 views

If there's no response to the ARP request, will the host send to its default gateway?

Host A and B are on the same subnet. A sends ARP request(s) asking for B's MAC. For whatever reason, B doesn't respond. Will A either: Give up -- it can't reach B Send the packet to the default ...
2
votes
2answers
46 views

Bad mask for Cisco simulator GNS3

I am using the GNS3 simulator, and I need to connect two Cisco C7200 routers. When I enter the ip address 126.0.0.4 255.255.255.252 command, I get Bad mask /30 for address 126.0.0.4.
1
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1answer
58 views

Configuring the NAT 1:1 rules with pfsense

I have two pfsense. One pfsense is on 192.168.0.1 and another pfsense is on 192.168.20.1. Basically I have installed 20.1 pfsense on one machine 192.168.0.180 which is in the network of 0.1 pfsense, ...
1
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2answers
71 views

Does each VLAN need a dedicated uplink port?

I am designing a network consisting of close 60 ports, via a managed switch. I intend to deploy multiple VLANs: one for servers, one for desktops, one for guests, etc. I intend to use the firewall ...
0
votes
1answer
47 views

Configuring IPsec VPN and TTL

I have two sites, each using their own firewall. Once a Cisco Meraki, another a Cisco ASA. The two sites use IPsec to establish a VPN tunnel. The Question: If each of the two sites have different ...
0
votes
1answer
53 views

Problem routing multiple switches and 1 router

I am having trouble routing between 2 switches and 1 router. My network diagram is below. I currently have both switches trunked to ports fa 0/0 and 0/1 of the router. I created sub interfaces on ...
0
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2answers
64 views

Routing beetween two hosts [closed]

In a virtual network, I have two hosts,let's call : A and B with ip addresses of 10.0.0.1 and 10.0.0.4. Beetween the hosts there is a router with two different network cards,and two different ip ...
3
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1answer
106 views

vPC with HSRP strange arp issue

I have following scenario with vPC and HSRP (version 1) configuration. I am seeing very strange issue, my host configured for bond + vlan and my bonding mode is active-backup, I have only VLAN 100 ...
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3answers
45 views

Connecting to subnets with IPSec VPN, how to route?

I set up a site-to-site VPN between two TP-Link routers, following the instructions here: https://www.tp-link.com/ae/faq-380.html . The VPN is based on IPSec. Now both routers say that the IPSec ...
1
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0answers
50 views

Even ips pinging but odd ips not pinging

We have following network, and i have multiple host connected to TOR switches configured with public IPs. We have HSRP running on vPC switches. interface Vlan100 description *** Public VLAN *** ...
1
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3answers
79 views

If routing protocol in physical routers in SDN network?

In SDN network, there are control and data planes. I want to know if routing protocol runs in routers in data transfer plane? If that,there is no difference with tradition network. Or the routing ...
1
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0answers
18 views

SSH into device attached to another router [closed]

I saw this questionwhich looks kind of related, but I'm not sure as the answers are too confusing. Basically, I want to SSH into my Raspberry Pi from my laptop. Eventually I want to have the Pi ...
2
votes
2answers
84 views

BGP source base routing question

This question is little convoluted to explain but i will try my best, I have following scenario. I have one ISP and i am getting 2x40G drops which you can see in diagram Link-A and Link-B (Both ...
1
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1answer
34 views

Ways to route traffic via MPLS TE tunnels

As far as I know, in L3VPNs which are implemented on top of MPLS-TE - traffic is routed automatically via the tunnel, since the route's NH information is learned via MP-BGP and this NH is also the ...
0
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0answers
41 views

Traceroute packets processing behavior

A traceroute initiate for NATed IP address 10.12.1.10 from a router that is outside from AS. This traceroute packet reaches at native BGP peer router where this NAT IP is configured at Firewall. ...
2
votes
1answer
32 views

Is the redistribution default-metric value when used over vPC peer link based on port channel aggregated bandwidth or individual physical Interface?

The question is in the title. Looking at a config where they were trying to Peering traffic over an SVI, but they have the physical interfaces bandwidth listed as the value and I am not sure if that ...
1
vote
1answer
78 views

Using a Cisco router to create a network inside an existing one

I have to make the 192.168.1.* network inside the already existing 192.168.0.* network using a Cisco 2821 router. I'm not familiar with Cisco IOS, and I have no idea what commands to use and how to ...
3
votes
1answer
93 views

How to announce network to specific neighbor peer in BGP

I have following scenario where i already have 10G (A - BLUE Link) connectivity from ISP on SW1 and SW2 for redendency and i have configured eBGP and iBGP, Everything is good at this point, Now my ...
0
votes
1answer
18 views

Sys Routing Table Router: Destination IP, Gateway IP and Public IP are different, something unusual? [closed]

I am currently studying my home network router Sys Routing Table and attempting to resolve WHY my Public IP (assigned by my ISP), Gateway IP (WAN) and Destination Network (WAN) are all different. I ...
3
votes
1answer
130 views

AWS direct connect BGP issue

This is out current setup and everything working great!!! here, now i want backup link for AWS so i have request for one more secondary link and terminated on Cisco ASA on Port-channel1.8 interface. ...
0
votes
2answers
80 views

IGMP and multicast forwarding

So my question is, will using IGMP alone(without IGMP snooping, PIM...etc) making router forwarding multicast traffic? I'm working on a buggy switch, but I don't know about networking too, so I'm ...
1
vote
1answer
37 views

2 Wan DHCP to cisco router

I have a cisco 2921 router and 2 wan ips provide by 2 diferents isp via dhcp. The main connection is funtional right now, I have a subnet with a nat to this ip, but I want put the second ip just to ...
0
votes
0answers
22 views

Cannot Ping Between Two OpenVSwitches

Please I am new to using OpenVSwitch on GNS3. Here are the details of a configuration I have created. OpenVSwitch1 is a docker container and is connected to GNS3vm and an ODL controller and is ...
4
votes
1answer
80 views

QoS Policing vs Shaping, why policing

Regarding QoS, we have two modes: shaping or policing. The policing drops packets while shaping put the packets in buffer. Shaping seems to be the better solution in a general ways, so, why use ...
1
vote
2answers
53 views

How does a switch know how to route ping packets?

i tried to browse all available answers on this subject, but it's still not clear to me what a switch can or can't do. I understand that when a host sends out a ping command, for instance ping 192....
0
votes
1answer
29 views

Router - can I remotely force a router to send my packets through a specific route? (in packet/network layer) [closed]

I'm a newbie in network programming in C/C++ and I'm working on raw sockets to program a simple ping or traceroute application as they are written in common network programming books. Programs like ...