Questions tagged [routing]

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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How to add firewell exception followed by routing

Reference to above diagram, There are two things that I want to do Access PC-4 from internal network (PC-1 to PC-3) Access internal network (PC-1 to PC-3) from PC-4 First one should be easy since if ...
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11 views

ASA Configuration Issues Unsure If It's Related To NAT, Routing, or ACLs [on hold]

ASA Configuration Issues Good Day, I am having issues with my ASA configuration and have thus far been unlucky in determining a solution. I have a bunch of hosts in a DMZ and a couple of client nets ...
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5answers
3k views

Same subnet, two locations, BGP. Can it be done?

I am not sure this is possible, but I'd like to route traffic over an MPLS network using BGP to different locations, but use the same subnet. We have an east coast and west coast location. Each of ...
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1answer
18 views

Listen to multicast feed with multiple interfaces [on hold]

I am having issues understanding how multicast routing work. Typically, I have a laptop connected to two networks with two interfaces: 10.0.0.0/24 192.168.1.0/24 On the LAN1 I have a multicast feed ...
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10 views

How do I use all IPs from a residential IPv6 block? [on hold]

My ISP provides a /48 IPv6 block, which are 65534 IPs. I want to create a server, which periodically sends requests from all IPs in this range, iterating through all IPs round-robin style. Is this ...
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2answers
937 views

At which layer does router operate?

I have studied from various sources that router is a layer 3 device. It does routing based on Network layer (layer 3) header, but I have a doubt. Network address translation (NAT) is a feature of ...
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1answer
37 views

why do I need the network name between two routers for RIP routing?

the network in my exercise I am learning about networks and I just started to learn about dynamic routing(like RIP) but there is something I didn't managed to understand and is why do I need in the "...
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1answer
22 views

Windows Domain Controller making ARP requests outside of subnet? [closed]

I have a Windows Server 2012 R2 box acting as a Domain Controller which is on a segregated LAN. It also acts as the DNS server for this LAN. I also have a Sonicwall NSA 2600 firewall which is set as ...
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11 views

Intermittent Connection Problem between two Computers [closed]

Hey guys I have an odd problem I'm trying to troubleshoot but can't figure out what's going on Setup: Computer A is on subnet 192.168.4.0 with ip 192.168.4.145 Computer B is on subnet 192.168.19.0 ...
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24 views

Why was the broadcast address changed from all zeros to all one's? [closed]

I know, all zeros as broadcast address was used a long time ago as you've mentioned in some other answer. I wanted to know what was the reason that it was dropped and all ones was used as it's ...
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10 views

WatchGuard interface with secondary router holding WiFi splash page

I have a captive portal splash page I need to be presented to only 1 Open Wireless SSID on a WatchGuard AP controlled via the XTM330. The WatchGuard is not able to present the required splash page ...
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19 views

pfsense in multi-WAN: OpenVPN route all traffic through VPN, how to set the gateway?

I have an OpenVPN running on pfSense in a CARP with multi-WAN. OpenVPN listens on all incomming (0.0.0.0) so that I can enter throu what ever WAN is active right now should one go down. When I ...
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1answer
43 views

What is a meaning of Load balancing Hash

What does Load balancing Hash mean in CEF? Which commands are use to configure? Is it support to other vendors except Cisco? If it is not support other vendors? do they have any similar concept? Which ...
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2answers
10k views

Local pref VS prepend AS-path for two eBGP router

I have two routers, AS50 and AS100, both are under my control. Since they are using different ASN, they should be eBGP routers. These two routers are connected by internet VPN and lease line, which ...
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1answer
28 views

JUNIPER EX-2200-C Layer 3 Switch Configuration

I am setting up attempting to simulate a small infrastructure of Clients and Servers. Current Setup 1x. Dell Inspiron Tower Running ESXI 6.5 1x. HP Z800 Workstation Running ESXI 6.5 1x. Juniper ...
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2answers
50 views

why does not the Internet require a single routing protocol for all stand-alone systems?

why we are not using one routing protocol like OSPF for example for all autonumus systems.
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1answer
67 views

How to firewall choose routing through ospf?

enter image description here i have this case:on firewall 1 and firewall 2 configure routing ospf and vrrp in the same time traffic go to internet through firewall 1, from firewall 1 routing to ...
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2answers
318 views

IGP between 2 routers with an uncooperative router in the middle

I've got two routers, A and B. A gets some routes over BGP over a VPN connection, and has a leg on 10.0.0.0/24. It also can access the whole 10.0.0.0/16 via its default gateway. B is on 192.168.0.0/...
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2answers
54 views

Sending an ipv4 packet to the Destination IP without a router?

We are replacing a "RF modem + Router system" with a Software Defined Receiver. After analyzing the receiving and sent signals we found out that an IPv4 UDP packets have been sent and received. The ...
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1answer
25 views

Meraki MX64, CISCO SG200 Switches, VLANS

Having issues with allowing traffic across VLANS. I have setup a Meraki MX64 and Cisco SG200 Switches to use 5 VLANs (1-5, 1 = default). I configured some ports on the switches to be members of 2 ...
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3answers
127 views

How to add multiple ip address in destination ip in acl rule

Iam trying to block a certain host from sending any message to any host in the network is there is a way to do that or i have to deny host by host ?
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1answer
27 views

Inter VLAN routing Issue with 4G connection

We have new branch and we will connect it through 4G routers "WAN connection" and L3 switches as below Fig. From 1-Branch Switch i can ping the 2-Branch Switch, but from (PC-1) i cannot ping (2-...
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1answer
13k views

Sonicwall NSA 2600 routing issues with multiple LAN interfaces configured

We have a Sonicwall NSA 2400 that has been in service for some years now. We've never had an issue with any routing until we "upgraded" to a new NSA 2600 device. Below is a rough idea of the ...
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2answers
213 views

Redundant internet connection with multiple lte modems

Hy i wan't to build a Redundant Internet Gateway to use multiple usb LTE Modems with diffrent SIM Cards. The goal of this is to install it on a Boat in a medium sized lake. The boat route is along the ...
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2answers
831 views

Does anycast addressing add additional latency in any way?

Does anycast addressing, in itself, add any additional latency to network connections? Specifically, if you had two servers located in the same data center that had extremely similar routes/number of ...
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3answers
3k 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 ...
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1answer
59 views

BGP | Advertise a summary prefix out to customer location

I don't know what I should be using for this or how I should go about it. In my lab where I am testing out the BGP configs that I've learned I want my ISP topology to have a summary prefix for the ...
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2answers
249 views

Cisco 2960 not receiving dhcp from the router

I have a problem with Dhcp of some the Vlans. here is how my network is : I have a router ASR1001, which connects 15 switches(2960) as a ring topology. each switch has a subinterface of the router ...
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1answer
35 views

RDP on IPV6 using DS-Lite-Tunnel [closed]

I am trying to access one of my PCs from and external network using RDP on port 3389. After realizing my ISP uses DS-Lite-Tunnel I gave up ipv4 and focusing on ipv6. So far the only way I managed ...
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0answers
78 views

Ad hoc vs Mesh, which one to use?

Say we have four nodes (A, B, C, D) that are arranged in a chain-like topology. A <-------> B <-------> C <-------> D Only the adjacent nodes are in range of one another (A can ...
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14 views

Connect a Multicast sparse-dense deployment with a sparse deployment

I am working on a task that involves deploying a new network in parallel to the existing network. As a part of this deployment we are going to cross connect the two networks so that it will allow for ...
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2answers
85 views

How to ping router from L3 switch

I am stuck in that that switch can't ping router and router can't ping switch. How to fix that ? I tried so much variants but them didn't help me Actually router must do static routing, that i am ...
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1answer
33 views

Static routing using 2 routers and 1 multi-layered switch

I'm trying to configure a static route between two routers and a layer 3 switch as follows - Router 0 interface FastEthernet0/0 ip address 172.17.10.1 255.255.255.252 duplex auto speed auto ! ...
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4answers
1k views

Cisco SG300 as core switch, Router needed for separated vlans?

We will get a /24 public IP address range, and I have to seperate it into few departments. So my plan is to split the /24 network into several /27 networks. I wanted to use a Cisco SG300-10SFP to ...
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2answers
71 views

Why can't we have duplicated IPs?

This may be a really dumb question, but I like to turn upside down what I already know sometimes, that way I can learn more. For example, given a network 192.168.0.0/24, I have a device inside with ...
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1answer
18 views

LAN to LAN Connectivity of Moxa routers

I am with background of DevOps and to optimize stuff in office i am assigned a networking task with not much experience of networking. My scenario is like below I have two moxa (EDR-810) routers ...
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2answers
585 views

How can we identify layer two device in a network or what are those device effects on a frame

This is sample of a traceroute to google.com: TraceRoute from Network-Tools.com to 216.58.194.46 [google.com] Hop (ms) (ms) (ms) IP Address Host name 1 0 0 0 ...
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2answers
50 views

How to cascade two routers [closed]

When I connect two (Zyxel) routers in a cascade configuration, I don't know how to set the right address on the Lan Interface between the outer router (the one on the top of the diagram) and the inner....
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2answers
73 views

Traceroute showing inter-vlan routing?

I currently have two different devices (one server and one client device) that are on separate VLANs (VLAN 5 and VLAN 10 respectively). When the client device runs a tracert to the server, the tracert ...
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3answers
412 views

Broadcasting and ARP packet

Router does not send Broadcast packet. that means it does not support broadcasting. but while sending packet from computer a to computer b which is not in the same network , computer a gets the mac ...
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2answers
1k views

Connecting Layer 2 switchport to layer 3 port

I have a config that I am trying to bring up, and in my mind it should work, but perhaps I am missing something. The idea is that one end of the link is a layer 3 interface on a router. The other end ...
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2answers
85 views

BGP multi-path using loopback

I have above scenario where i have multiple PATH for my BGP so i have to setup loopback interface to make it ECMP routing on both path. I have cisco nexus switches and following is my first router ...
4
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1answer
77 views

Internet speed across access points

Hi I work for a small plant nursery that is split into two parts by a street. The main side of the nursery has the majority of the green houses. There is a main switch in the office and from there we ...
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2answers
814 views

BGP convergence issue

I have 2 different carriers on my Cisco 2921 router and I have set weight to 350 for my first carrier to force it for my outbound traffic, and I set second carrier weight to 300. I am receiving BGP ...
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1answer
78 views

Cisco numeric EIGRP routing IP summarizing and routing

I have 2 routers connected via Serial 0/0/0 both running EIGRP with an ASN of 65000, and i want to advertise and summarize the interfaces, being just my loopbacks, and set the loopbacks as passive. ...
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4answers
130 views

Carving out a /28 network and still maintaining access to parent /24 network

In the diagram below, I'd like to carve out a /28 network from 192.168.0.0/24 and move it to another geographical location and still maintain access in and out of the original /24 network. ...
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1answer
40 views

RIPv2 Routing not pinging between two serially connected routers?

I'm new to networking and am currently 6 months into a course for it so there may be some noob mistakes or really silly answers/questions here but bare with me. I have a task to setup RIPv2 routing. ...
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1answer
24 views

Purpose of prune message in rpf

I read that when a multicast aware router without receivers received a multicast message, the router will send an upstream prune message. I don't understand what is the purpose of the prune message. I ...
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0answers
17 views

pfsense CARP with VLANs duplicate default route

I have set up a 2pf CARP with VLANs. So far everything works well however I wonder why and if it is a problem that I get on the VLANs a duplicate default route. My DHCP on the VLANs is of course set ...
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0answers
28 views

How to get traffic to take BGP route if not matched in PBR?

I am a newbie to BGP and have an ASR1001x router (172.16.0.3), I'm forwarding an ACL to a second router (172.16.0.1) while I try to get BGP working on this one for a specific testing prefix-list ...