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Questions tagged [bridge]

Network bridging describes the action taken by network equipment to allow two or more communication networks, or two or more network segments, to create an aggregate network. Bridging is distinct from routing which allows the networks to communicate independently as separate networks. A network bridge is a network device that connects more than one network segment. In the OSI model bridging acts in the first two layers, below the network layer.

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Does bridging add delay?

If I use a bridge to perform traffic sniffing like man in the middle will the bridge add a delay? And what word should I use delay or latency?
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pfSense multi-wan Bridge, NAT, Load balancing and CARP

Context I currently have : 1 pfSense 2.0.2 router (on a Firebox X-Peak X5000) 2 WAN 1 LAN 3 Servers My interfaces WAN1 68.XX.XXX.98 to 69.XX.XXX.102 WAN2 65.XXX.XXX.58 to 66.XXX.XXX.62 LAN 192.168....
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Advice for network & device configuration using Comcast Modem?

Summary My ultimate goal is to run a VPN through my Cisco Router, which to me means getting the Comcast Gateway out of the way. To this end, I would like to place my Cisco Router (and/or Switch) ...
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Why do we need repeaters since there are bridges (or switches)?

I was reading the HowStuffWorks article on ethernet. From the article, I understand that bridges are just like repeaters, but with the added benefit of not cluttering up other collision domains. So I ...
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1answer
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Difference between gateway, router, switches and bridge

I am going through a course of networking and want to know the difference between the mentioned devices. I have heard that the switches: Establish a temporary connection between the devices connected ...
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Difference between Switch and Linux Bridge

In my network, I need some manageable switches. So, somebody advised me to configure the Lab Linux servers as bridges using brctl. Those new bridges should act like switches. What should be the ...
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1answer
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Mobile devices behind wireless bridge not getting IP address

I'm trying to get a wireless link set up to a building about 1/2 mile away from the rest of my network. I'm using a pair of Engenius EOC2611P radios, and as far as I can tell everything is set up ...
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Bridging LAN networks privately in office environment

I've begun looking into network bridging, must most of it is witchcraft for me so far. I currently have the following setup: I use PC 1 as my development station and PC 2 as a deployment/test station....
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1answer
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MikroTik - problem with port bridge over LAN using 2 switches [closed]

I have RB2011UiAS-2HnD-IN router in my network. It has two switches - "switch1" with 5 x 1Gb ports and "switch2" with 5 x 100Mb ports. There is only one LAN addressing pool - 192.168.1.0. All 5 ...
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1answer
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Difference between Linux Bridge and Open vSwitch

What are the most significant differences between how a Linux bridge and an Open vSwitch work?
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1answer
211 views

Cisco router under workgroup bridge AP

My question is about addressing a Cisco router interface so that I can use both bridging through an access point as workgroup-bridge and also connect to the access point to configure it. Apologies ...
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1answer
316 views

Can a network bridge be viewed as a two port switch?

I never worked with bridges because they were no longer used when I first got internet at home, and I have some troubles understanding what exactly was the role of the switches. From my search I ...
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1answer
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Cisco ASA and BVI interfaces

I'm in the middle of equipment migration and the setup is somewhat similar to Mike's (Configure Cisco ASA in Transparent mode: Layer2 DMZ w/ Vlan translation) but with a difference that I need the ...
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2answers
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PAgP over transparent wireless point-to-point links

We have 2 buildings which are interconnected by 2 wireless P2P links. One is used as main connection, the second one is for redundancy and backup. So far, we have these 2 buildings in flat L2 network ...
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2answers
218 views

Cisco Catalyst 3850 router VLAN bridge no routing

New to Cisco stuff so bear with me (only a little L2 Procurve experience). I have a development network connected to an Aruba/HPE managed switch feeding a trunk with tagged VLAN's to an internal ...
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755 views

Bridge for collision domains

I have read that a bridge/switch can be used to increase the number of collision domains in the network, but somewhere I also read that a bridge reduces collision domains. Is it possible for bridge to ...
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1answer
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802.1Q VLAN over Deliberant APC wireless bridge - am I doing something wrong?

I've previously run a Cisco based network (Catalyst switches, ASA and PIX firewalls) which segmented a medium sized business network into 8 VLANs with little issue. I've recently started in a new ...
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3answers
507 views

Force VLAN traffic through specified interfaces

I have two VLANs, VLAN1 for "clients" and VLAN2 for (web)servers. Both VLANs have two ports in etherchannel (one Cisco switch). I would like to put transparent (WAF) device in bridge mode between the ...
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1answer
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What is WDS and how can it cause a broadcast storm?

Recently I was told that we leave WDS off ,whenever we can, where I work. It was explained to me that a broadcast storm is created when a routers' broadcast gets back to itself, perpetuates itself and ...
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1answer
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Wireless options for connecting two buildings together (300ft)

Situation: Previous company setup each building on their own ISP/Modem. They then used cisco routers to create a VPN connection over the internet from the looks of it to the other building. This from ...
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1answer
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Why do my network adapters do not show IP addresses when bridged? [closed]

I've set up an Ubuntu 14.04 virtual machine with two network adapters. eth0 (bridged adapter) - 192.168.0.105 eth1 (NAT) - 10.0.3.15 I have performed ping commands to ensure everything is fine: ...
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191 views

Bind IP To Port

I have a Cisco 877 router, running IOS Version 12.4(24)T3, with 4 Ethernet ports and multiple external IP address attached to the internet connection. I usually just nat the external addresses to ...
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2answers
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Cisco 1841, Bridge T1 WAN to hosts with public IPs?

We currently have a Samsung router given to us by Covad. It is configured like this: PPPoFR T1 WAN (samsung router) x.x.x.49/29(public address) gateway ...
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1answer
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How to access to virtual interface with static IP thanks to VPN?

Question : Is it possible to use a VPN solution to access to a remote PC in the following context ? Context : Objective : We need to connect a specific software (that uses a particular port) to a ...
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1answer
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Merging two networks

I am new to networking and I want to understand how to merge (bridge) two networks and what all things (parametres) change when the nerworks are merged. Can somebody explain more in an educational way?...
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2answers
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Join internal networks

we've expanded our business to a nearby building with its own network and i am trying to join the two so that the workstations can see each other, but they continue to use their own internet access. ...
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1answer
608 views

Cannot bridge point-to-point between autonomous AP and lightweight AP

I'm doing some tests in a company, and I have some problems. My mission is to configure an autonomous AP Cisco AIRCAP-2602E, and do a Wi-Fi bridge point-to-point between a Cisco lightweight AP and ...
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1answer
115 views

Different between VLAN broadcast behavior on a Cisco switch and a Linux bridge

When will a packet be tagged/untagged with a VLAN tag in these cases: On a Cisco switch On a 8021q subinterface in Linux (for example, eth0.10) On VMWare ESXi (with VLAN ID in VMNetwork setting) ...
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1answer
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What is the difference between “Client Mode” and “Independent Bridge” in an AP?

Considering the 5 modes of operation of wireless access points described on this page, there a among them: Mode 2 - Bridge. Most APs can also be configured as a Bridge. In such Configuration the ...
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1answer
1k views

Reach to LAN device from a different subnet

I have my network configured this way: The ISP router giving internet access (192.168.1.1/24) through wifi (SSID wlan01). Connected to this wifi I have a Nanostation2 (192.168.0.20/24) in bridge ...
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5answers
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What is a VLAN (really)?

My question is about the literal and precise meaning of the term "VLAN". According to IEEE 802.1Q-2014, a LAN is a single segment of a medium. A cable connecting a PC to a switch port is a single LAN. ...
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1answer
52 views

Cisco ISO - Are all interfaces assigned to bridges automatically?

I'm currently looking at configuring a second bridge on a cisco switch, however it appears that all interfaces are 'automatically' in the first bridging interface because they are part of Vlan1, which ...
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1answer
473 views

Bridging networks without NAT: how it's done?

I have quite limited networking experience, so probably i'm asking about very simple things. I'm reading about linux bridge interfaces, and documentation states that there is no NAT by default and ...
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1answer
296 views

Regarding Bridge domain and L2 vpn

I am trying to understand the usage of bridge group command.Please refer the following config(on switch ASR9k): l2vpn ! bridge group TEST1 bridge-domain BD1 interface Bundle-Ether1.500 ...
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Understanding Linux Bridging

I am trying to understand Linux bridging. Lets say I have a Linux bridge with two veth interfaces and a vNic. Bridge: br0 Interfaces: veth1, veth2, and eth1 Now, if I do brctl showmacs br0, it ...
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1answer
351 views

Phone and PC network sharing one wifi bridge

We have a Cisco router from our T-mobile provider, two subnets on two ethernet ports: one subnet for PC data network, one subnet for IP phone network. The subnets have different IP addressing. As per ...
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2answers
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How transparent bridging Wi-Fi with Ethernet works?

The way I understand (two-port) transparent bridging is that the bridge simply forwards packets to another segment on the network. But since the MAC address of the ethernet interface is different to ...
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1answer
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How can I bridge multiple interfaces to a single one a Cisco ISR C891F but making each one able to communicate only to the destination interface?

As the question says: How can I bridge multiple interfaces to a single one on a Cisco ISR C891F, but making each one able to communicate only to the destination interface? Let's say I have ...
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1answer
399 views

How to bridge two networks with Ubiquiti hardware?

I want to connect two networks using a wireless bridge. My networks are in different subnets and each have their own router (and DHCP server, and independent internet connection). I tried a basic ...
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2answers
120 views

How do I create hard wired communications between multiple lans with individual wan connecitons [closed]

First off, I assume this is a simple question, but I do not have a background in networking. Nonetheless, I am responsible for setup and maintenance. I would appreciate any help. I have the ...
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1answer
105 views

Difference between coupling with bridge and router

(warning: this is an old exam question, for which I don't have a solution): Assume 2 local networks LAN1 and LAN2, with Endsystems A,C in LAN1 and B,D in LAN2. The networks are coupled with a bridge. ...
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3answers
761 views

Can a mikrotik 750GL have the same IP as the DSL router connected in a different port? [closed]

On a simple network of about 10 computers setup with static IPs in the 192.168.1.x range, the ISP's DSL router occupies 192.168.1.1. All computers and the router physically connect to a simple network ...
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1answer
496 views

Cabling two access ports on the same switch from different VLANs

Theoretically would I be able to connect two switch ports together with a simple straight/cross cable on the same switch. If the two ports are in different VLANs (eg. 2 and 22) and ports are in ...
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1answer
373 views

Accessing Internet from a different VLAN. Cisco 200-26

I have just had a cisco 200-26 smart switch with 24 ports. I have set the IP of VLAN1 (also management Lan) to 192.168.1.254. All ports except port 10 and 11 are assigned to VLAN1. Furthermore, I have ...
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1answer
1k views

Bridge two QinQ interfaces on a juniper router

On a Juniper MX router I've got 2 interfaces that I need to bridge together. Interface A has QinQ configured: vlan-tags outer 0x8100.1 inner 0x8100.600 Interfaces B has QinQ configured vlan-tags ...
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2answers
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Can 802.11a connect or can bridge to 802.11n?

Can 802.11a connect or can bridge to 802.11n? I do search the internet but it doesn't gave me a clear idea. I also searched in this site, but I saw, b to n, or ac to n. I'm an amateur in this kind of ...
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1answer
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Can bridging two networks in Windows Server 2012 lead to an external attack?

I have two LAN networks on my server. I tried to bridge them, but the server got attacked post bridging. Does bridging open additional ports on the existing connections, and can bridging alter the ...
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1answer
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Network/Socket Connection Issue

Problem Socket Connection between 192.168.1.1(Server) and 192.168.1.12(Client) can NOT be established (See Fig. 1). Tests Test 1: "Ping" ping 192.168.1.2 -S 192.168.1.1 -> Success ping 192.168.1.12 ...
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1answer
395 views

Port-selective transparent forwarding with routing?

I'm trying to sanity check my lack of understanding of a colleague's network planning exercise. It doesn't make sense to me, but maybe I'm missing something. My general networking knowledge isn't bad, ...
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2answers
108 views

Combining Two Networks With Hardware [closed]

My office has two internet connections and two routers and two networks. One network is used for the Internet connect and has great speeds. The second network runs our IP phones and is a backup ...