Questions tagged [trunk]
A trunk is a connection between switches where multiple VLAN's pass.
99
questions
151
votes
2
answers
134k
views
How do VLANs work?
What are VLANs? What problems do they solve?
I'm helping a friend learn basic networking, as he's just become the sole sysadmin at a small company. I've been pointing him at various questions/answers ...
- 10.3k
30
votes
3
answers
17k
views
What happens when a consumer switch receives a VLAN-tagged Ethernet frame?
Suppose you connect a trunk port from a VLAN capable network switch to a (VLAN incapable) consumer-grade network switch via a direct cable. Now the former switch send the later switch a 802.1Q-tagged ...
- 2,143
9
votes
3
answers
8k
views
Cisco and Linux and Vlans
I appear to have some fundamental misunderstanding of how VLANs work on Linux, and I'm hoping the good people here can educate me.
Cast: One Cisco 3560, one VLAN, and one Linux box [1].
Cisco -----...
- 91
8
votes
2
answers
5k
views
HP Procurve Issue Passing Multiple VLANs over a link
Just to start off with I am a Cisco guy that got placed into an HP project.
Basic topology overview from outside in:
ASA 5505 with two Ethernet connections to a 2610 switch.
This switch is then ...
- 81
5
votes
1
answer
15k
views
Multiple, different VLAN trunks to KVM guests (Linux)
I've hit a roadblock of sorts with an architectural challenge. I've got a server running KVM - which will feature a number of guests, some running virtualised firewalls and others, just plain web ...
- 509
5
votes
1
answer
7k
views
Procurve Primary VLAN
I'm trying to depreciate usage of VLAN 1 on my ProCurve switches; 1 is unused. I understand that VLAN 1 must exist, but I want to remove it from all ports, especially trunks between switches.
The ...
- 5,436
5
votes
5
answers
51k
views
Difference between trunk and tagged port
I am reading some wikipedia articles and RFC 5517, studying VLANs, and I don't recognize the difference between a trunk port and a tagged port.
From what the material I am reading says, a tagged ...
- 261
4
votes
5
answers
11k
views
Stacking two Netgear GS748TS switches via HDMI - only 1Gbps trunk bandwidth?
I have two Netgear GS748TS 48 port gigabit stackable switches, which when stacked via two HDMI cables allow hosts on one of the switches to talk to hosts on the other.
Netgear claim that the HDMI ...
- 173
4
votes
1
answer
1k
views
how to make Windows server 2012R2 NIC connect to trunk,but with a VLAN ID
Windows Server 2012R2 ,with hyper-v.
for hyper-v 's guest os connecting to multi vlan, host 's NIC connect to trunk port on switch hub.
but I want set host os with VLAN ID(VLAN 10) ,for with a VLAN 10 ...
- 91
4
votes
1
answer
23k
views
Configuring Sonicwall to route VLAN traffic to internet
I have a Sonicwall NSA 2400 that had its configuration reset and I'm having trouble reconfiguring it.
The Sonicwall's WAN port (X1) connects to the internet. Its LAN port (X0) connects to a 3Com ...
- 151
3
votes
1
answer
3k
views
HP Procurve Core Switch Architecture
I want to build a new 'core' for our network. We currently have a 3com 4060 switch acting as the core, connecting all the other TOR and access switches together.
The goal is to add resilience into ...
- 5,436
3
votes
3
answers
38k
views
How to setup dual-wan trunking but keep one as main... (Weighted round robin, Least load first, spillover)
I'm working on setting up a zywall USG-100 firewall.
I can get everything to work but now I'm trying to get the 2 wans to work correctly.
They both work individually but I'm having trouble with the ...
- 445
3
votes
2
answers
954
views
Planning trunk capacity for multiple GbE switches [duplicate]
Without measuring throughput (it's at the top of the list; this is just theoretical), I want to know the most standard method for trunking VLANs on multiple Gigabit (GbE) switches to a core Layer 3 ...
- 375
3
votes
2
answers
22k
views
What are the possible reasons for a SIP register failure?
I have setup an Elastix box (asterisk/freepbx based) and added a trunk for an external VoIP provider.
When I get to the Asterisk command line interface and type sip show registry I always get the same ...
- 1,244
3
votes
2
answers
16k
views
VLANs through a trunk between Dell Powerconnect 6248 and 2848?
I have a Powerconnect 6248 connected to a 2848 and I am trying to get VLANS working on the 2848.
VLANS work and receive DHCP addresses, traffic routes correctly and DNS works on the 6248.
The DHCP, ...
- 167
3
votes
1
answer
555
views
Bond on top of VLANs or VLANs on Top of Bond
Both ways seem possible.
What is the better approach within Linux? Better means more efficient assuming my switch doesn't know about LACP+Tagging.
Thanks!
- 201
3
votes
2
answers
21k
views
HP Procurve 1800 Switch-to-Switch Trunks and LACP (and VLANs too!)
I am considering connecting two (and possibly three) HP Procurve 1800 switches together with trunks or with LACP. I can't find any substantial answer to my questions via Google or here.
I did find ...
- 4,610
3
votes
1
answer
218
views
Network topology, clearing congestion
Our networking components consist of (3) x D-Link DGS 1248T Switches, and a router.
We have 4-5 servers running as VMWare Host, HTTPD, and Storage.
The clients on the network are connected to the ...
- 3,210
2
votes
4
answers
3k
views
Trunk fiber ports on switches
We are planning to purchase new switches for our network. We have three buildings in the same area that are all connected by fiber. Our main building is very large and needs to be connected by fiber ...
- 274
2
votes
2
answers
24k
views
Setting Up VLANS between a Dell PowerConnect 2824 and 2716
Goals:
- Have two Dell switches trunked together with 1 cat5 cable.
- Have VLANs of the same number/name passing traffic from switch to switch.
- Not allowing any traffic from one VLAN to pass to a ...
- 825
2
votes
1
answer
2k
views
Is it possible to trunk ESXi 6.5 with HP 1820-48G?
I am trying to setup trunk between those two (ESXi 6.5 with HP 1820-48G) and nothing seems to work.
I have read vmware kb article (can not insert link) and no luck.
These are my setup options, brute ...
- 200
2
votes
1
answer
80
views
Migrating existing clustered virtual network to a trunk
We have a 3-host VMWare vSphere v4.1 cluster that has a connection to an untagged network (let's call it 192.168.10.0) using two physical adapters, vmnic1 and vmnic2. Both are currently marked as "...
- 197
2
votes
1
answer
6k
views
ESXI 5.1 - Unable to trunk to cisco switch
I have configured my esxi host vSwitch1 to use the secondary NIC on my VMware host.
On vSwitch1 configuration I have set the VLAN to 4095 which specifies to allow all VLANs.
If my cisco switch port ...
- 281
2
votes
1
answer
2k
views
Setup VLAN agnostic ports on HP ProCurve 1810G (Ingress Filter, Trunking)
I am wondering if it is possible to configure some ports of the web managed ProCurve Switch 1810G to participate in all VLAN traffic. Even if no VLAN with that ID has been set up inside the switch.
...
- 392
2
votes
1
answer
523
views
Tagged Packets on native VLAN General Port
Scenario a)
I have a Switchport (g1) in General-Mode. Say g1 is member of VLAN1 (native, untagged) and VLAN2 (tagged).
Another Port (g2) is in Trunk-Mode, and member of VLAN1 and VLAN2
If i send a ...
- 123
2
votes
1
answer
5k
views
Cisco 891w multiple VLAN configuration
I'm having trouble getting my guest network up. I have VLAN 1 that contains all our network resources (servers, desktops, printers, etc). I have the wireless configured to use VLAN1 but authenticate ...
- 21
2
votes
0
answers
538
views
Hyper-V VLANS working, but VLAN trunk does not. Native VLAN works.. WEIRD,
Trying to get VLAN & Trunking to work in Hyper-V.
I have two VM's on the same Network. SCVMM and Host1. Host1 should be a Trunk for VLAN 7-12 and Native VLAN 10. I then put SCVMM on VLAN7 via the ...
- 21
2
votes
1
answer
2k
views
Cicso ASA 5505 with 2 trunk interfaces
(Updated with config, see bottom).
I've a question regarding the ability of a Cisco ASA 5505 to handle two trunked interfaces when sitting between two switches.
I've gone to the trouble of drawing a ...
- 6,105
2
votes
1
answer
6k
views
configure trunk interface in linux centos7
I have connected 2 trunk interface to server(centos 7 server) nic port for setup vlan tagging.
And have enabled 8021q module in server.
Configure two physical interfaces as bonding as below
...
1
vote
3
answers
4k
views
Cisco 2960 trunking issue
I have a Cisco 2960 running 12.2(58) SE2 with four VLANs configured (10.10.10.0/24 - 10.10.40.0/24) plus one uplink on a 192.168.1.0/24 network. I have enabled ip routing and the VLANs can talk ...
- 13
1
vote
2
answers
28k
views
VLAN trunking between Juniper EX -> Cisco Catalyst -> and Cisco Router
I have the following scenario:
EX2200 Switch whit
ge-0/0/8 set as an access port on VLAN 80
ge-0/0/0 set as a trunk
port connected to a catalyst switch and various vlans allowed to pass includin ...
- 478
1
vote
1
answer
1k
views
Does a trunk port not half the bandwidth the way connecting an access port would?
If you connect a trunk port instead of an access port from your managed switch; does the bandwidth not get cut in half when the vlan is accessed on the managed switch's access port for that vlan?
- 4,919
1
vote
1
answer
8k
views
Is it possible to have 802.1Q trunk port on Windows Server 2008?
I would like to have multiple vlans on Windows Server 2008 machine. Is there any way how to configure trunk port on Broadcom NetXtreme adapter on this OS ? Thank you.
- 1,493
1
vote
2
answers
277
views
What is SIP trunking?
Can someone explain to me in plain English what SIP trunking is, please? I've read about it on Google, but I don't really grasp it yet. Does it allow a VoIP call to be placed outside of the LAN? So ...
hypnocode
1
vote
2
answers
4k
views
VLAN support on Juniper EX - 2200 switches
I have 6 Juniper switches (EX - 2200) connected to each other as shown in the network topology.
I have two PC's that I am using
PC1 - (used for configuring the 6 switches via minicom) PC2 - to ...
- 303
1
vote
2
answers
8k
views
Best practice to trunk two GB switches?
I already read some similar questions but I still have no clue on how to do it the right way. I have a D-Link DGS-1248T 48 port GB-switch with 4 mini GBIC ports and I want to connect it to another ...
- 73
1
vote
1
answer
2k
views
Trixbox won't accept incoming calls on IAX trunk
any trixbox/asterisk experts out there?
I have a trixbox installation that refuses to accept incoming calls via IAX2 from a certain VoIP provider. Initially, I thought it was a firewall problem but I ...
- 1,738
1
vote
1
answer
47
views
One way audio, bad echo on asterisk trunks with PAP2T ATAs
This is not a question, I solved it.
I set up Asterisk trunks between offices, with encryption, some offices do not have fixed IP and login in to the central server. That all went well. Anybody needs ...
- 21
1
vote
1
answer
2k
views
LACP vs HP Trunk
Question on the performance and function of LACP vs HP "Trunk".
Example, I have two HP 2910al-48G switches connected via two runs of CAT6 cable. Is there any difference in performance between setting ...
- 135
1
vote
2
answers
2k
views
Combine two ports into one
I have a Cable Modem which an approx. 1200 Mbit download speed connection to the internet. Unfortunately the modem splits the download into across ethernet ports - i.e. 600 MBit each.
The Cable Model ...
- 145
1
vote
1
answer
2k
views
Trunk mode with HP Switches
I am facing a problem within my network.
The scenario is this.
I have two HP 2920-24G Switch (J9726A). They are connected with each other and also both are connected to a HP V1910-24G Switch (JE006A) ...
- 35
1
vote
1
answer
2k
views
D-link DAP-2695 VLAN configuration
Well... I thought I had this all figured out... I am essentially reopening this same question I had 2 years ago (Reference: D-link DAP-2590 VLAN configuration)
I got it all figured out back then and ...
- 559
1
vote
1
answer
3k
views
ESXI 5.1 - Losing access to management interface on vSwitch1 when vSwitch0 loses network access
I'm probably missing something obvious here, but, I am trying to make some adjustments to the Vkernel Port management interface on vSwitch0 that is set to VLAN ID: All (4095).
So I don't disconnect ...
- 281
1
vote
2
answers
2k
views
Windows 8 Hyper-V & VLANs
I'm trying to setup Windows 8's Hyper-V so that I have:
Switch which has 2 VMS connected to it
Vyatta box which is connected to said switch and set as trunk (native vlan 1, allowed vlans 1-4000)
...
1
vote
1
answer
921
views
Possible to connect (trunk?) two Cisco 3560 switches from remote locations?
Disclaimer: I'm not a network guru but I do learn quickly! Bear with me.
Situation: I have a colo setup which is comprised of several servers, a iscsi SAN, connected with a Cisco 3560G switch, ...
- 31
1
vote
1
answer
5k
views
How do you configuring vlans/trunk on a Cicso ASA 5510
I have a Cicso ASA 5510 that I want to connect to 2 Dell PowerConnect 5500 linked in a Switch Stack. I want to connect a trunking line to each switch so if one switch dies the other works. The ...
- 173
1
vote
1
answer
2k
views
vlan 1 and 1002-1005 in a trunk connection-should they be allowed?
If I have a trunk connection that should allow only two VLANs(100 and 200 for example), is it neccessary to also allow the default vlan 1 or VLANs 1002-1005. I am trying to configure a switch port for ...
- 153
1
vote
1
answer
435
views
Trunk port wont accept the Printer vlan
I have three switches daisy-chained together and I have a printer vlan serviced with a print server off the core (1st) switch. the middle switch trunk port will not accept the printer vlan. I issue ...
1
vote
0
answers
191
views
Forwarding mDNS packets from an on-prem network to cloud server and back
Problem Statement :
We have an application running on an on-prem Linux server configured with a trunk port and its working is tightly associated to multiple VLANs traffic and certain device IPs ...
- 111
1
vote
1
answer
1k
views
Trunk Group in Aruba Switches
Please help to clarify a doubt I have.
I need to configure a Aruba JL357A 2540-48G-PoE+-4SFP+ Switch that will be connected with 4 other switches using the SFP ports. So each port will be set to ...
- 35