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 ...
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20 views
dont know what to buy [on hold]
I live in Greece outside a village about 1.5 km.I have my own internet connection in the village, but no land line in the house 1.5 km away.There is good line of sight between the two houses,but with ...
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0answers
38 views
Should I configure router as bridge? [on hold]
I work at an office connected to a domain network.
The network is connected to an office wifi router. The router is connected to all office's PCs and devices. Some PCs are connected with cable, and ...
0
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1answer
26 views
Discovering public ip from wifi signals, shodan, parent router NAT [closed]
MAC addresses innately do not change right?
and you're able to scan for broadcasting APs where you'll be able to detect different nearby mac addresses of each AP..
Public IP addresses change, ...
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0answers
10 views
How to secure management wired network for public use (Mikrotik + UBNT + Zyxel) [duplicate]
In a network there is a router from Mikrotik, switches are ZyXEL GS1900-24HP and the access points are Unifi UAP AC-LR.
I have configured three VLAN's: public, staff and management.
All the access ...
1
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1answer
92 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 ...
0
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2answers
118 views
How to make virtual devices on GNS3 be able to ping the physical host
I have had this problem already and figured out its reason. Basically the problem is that the virtual devices on GNS3 cannot ping the physical host and also the physical host cannot ping the virtual ...
0
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1answer
214 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 ...
0
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1answer
34 views
Wifi ap bridge WLAN network with WAN network
Googling "WLAN Bridge" mostly gives results about WDS bridge (wifi device to wifi device communication)
What i want to do is basically bridge the router's WLAN and WAN interface (disabling NAT, ...
1
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1answer
31 views
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 ...
1
vote
1answer
147 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 ...
1
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3answers
326 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 ...
2
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1answer
128 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 ...
4
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1answer
153 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 ...
0
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2answers
59 views
Working of bridges not making sense
I am reading the book on Data Communications and Networking by Behrouz
A. Forouzan
Suppose a device A on LAN 1 wants to connect to the device B on LAN 2 . Initially the bridge table is empty . ...
3
votes
1answer
344 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 ...
1
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1answer
44 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 ...
1
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2answers
579 views
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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3answers
396 views
Is there an “active” network tap (not just passive)? [closed]
Passive network taps seem to be pretty simple. What if I want an "active" network tap? Let's say I want to change some HTTP packets, for example add info etc.
Another thing that would interest my ...
1
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1answer
87 views
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 ...
1
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1answer
119 views
How can I prevent VLAN bridging on a Cisco switch
A Cisco switch (IOS) on our network configured with VLAN 7 and VLAN 8 as access VLANs (7 being the native for the trunk on the switch) had the VLANs bridged by someone who connected a patch cable from ...
0
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2answers
54 views
What is EB (Ethernet Bridge)? [closed]
I'm new to centos and networks and I was reading documents about how to use direct commands on centos7 firewall-cmd using man 1 firewall-cmd I saw this line:
The first argument of each option has ...
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1answer
281 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 ...
2
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2answers
71 views
Need of routers and IP addresses
I dont know if my research is enough or not but I could not find answers on the net.
My question is why not use bridges instead of routers. We know bridges can connect two different networks. Using ...
1
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1answer
182 views
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?...
2
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1answer
383 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
698 views
Use iperf to split multiple tcp streams between 2 NIC on same client (similar to IxChariot)
I have 2 PCs connected to each other using two 1 Gbps ethernet link, to have an aggregate data bandwidth of 2 Gbps. In IxChariot, I can create multiple TCP pairs and split them into:
PC1_LAN1 <-&...
1
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1answer
730 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 ...
1
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1answer
193 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
...
2
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1answer
100 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) ...
1
vote
1answer
445 views
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 ...
1
vote
2answers
158 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 ...
1
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2answers
166 views
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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2answers
53 views
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 ...
1
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1answer
3k views
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 ...
1
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1answer
13k views
Configurating VLAN access and trunk ports on RouterOS/Mikrotik [closed]
I have RouteBOARD RB951G-2HnD, RouterOS 6.34.2 and I am trying to achive a network configuration something like what is depict on the next picture. The picture is from Mikrotik Wiki http://wiki....
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1answer
898 views
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
124 views
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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2answers
468 views
Connect to wireless network on different subnet
I have a lift motor that has an app that allows me to move the lift up and down. The lift creates its on Wi-Fi network with a default gateway of 192.168.4.1
My existing network is 192.168.1.1, I have ...
0
votes
1answer
278 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, ...
1
vote
2answers
93 views
Combining Two Networks With Hardware
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 ...
0
votes
4answers
106 views
What is the security purpose of a bridge?
Linux bridges operate at layer 2 and therefore can only switch packets between interfaces whose mac addresses are contained in a single bridge; a full router operates at layer 3, and thus allows ...
0
votes
2answers
350 views
WLAN Bridge connected over WLAN to the internet
I need to establish a WLAN Bridge over a distance of approximately 400m. I found this equipment: https://www.ligowave.com/products/apc-propeller-2
As I understand it needs to connect over LAN to the ...
3
votes
1answer
1k views
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:
...
0
votes
2answers
2k views
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 ...
4
votes
1answer
7k views
Difference between Linux Bridge and Open vSwitch
What are the most significant differences between how a Linux bridge and an Open vSwitch work?
1
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2answers
216 views
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
...
0
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1answer
752 views
Secure connect & access across 2 separate LAN Subnets using PFSense/ Sophos?
Secure connect & access across 2 separate LAN Subnets using PFSense/ Sophos?
Following is an older diagram of a 2+1 level Small Business/ Startup + Co-working space, with recent expansion & ...
4
votes
1answer
1k views
Which switch MAC addresses are used for the Bridge ID in STP?
Lets imagine that I have big LAN environment with many switches and many VLANs, for example, VLANs 5,15 and 50. I have PVST+ activated, and all of my switches have same (STP) priority.
I connect a ...
4
votes
1answer
2k views
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 ...
5
votes
3answers
3k views
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) ...
