Questions tagged [vlan]

For questions about Virtual LANs (VLANs) which are used to divide what otherwise would be a single OSI layer-2 broadcast domain into multiple, logical OSI layer-2 broadcast domains.

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can't reconnect via ssh after changing network settings on openwrt [closed]

Setup Mikrotik RouterBoard 750gr3 OpenWrt 23.05.03 MacBook ive installed on the Mikrotik the OpenWrt firmware. My pc got the ip address 10.13.1.201. I am connected via port 1 with the board. Problem ...
zahntheo's user avatar
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Why we need VLANs if switched alone are not sending all frames to all clients? [duplicate]

My understanding is that: Hub sends all data to all clients. Switch sends only frames to the client that have destination MAC address of the client. So, my understanding with Switches traffic of ...
vasili111's user avatar
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70 views

intervlan routing on cisco L3 stacked switches

I am new to this and I am having a bit of a issue trying to successfully perform intervlan routing on a stacked L3 switche(s). I essentially have three SVIs with their corresponding VLANS ( i think) ...
Tormentium's user avatar
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1 answer
129 views

SOLVED - Quanta LB6M Trunk and Vlan

I have 2 Quanta LB6M and a Juniper EX4200 and need to create vlan and trunk For vlan interface i have this: interface 0/27 vlan pvid 31 vlan participation exclude 1 vlan participation include 31 exit ...
Ertu Kocak's user avatar
1 vote
2 answers
103 views

Can the Cisco SF302-08 switch support IP routing capabilities?

I'm currently working on configuring inter-VLAN routing on a Cisco SF302-08 switch. I've already enabled Layer 3 routing, created the VLANs, assigned them to switchports, and configured the switch ...
mema's user avatar
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-1 votes
2 answers
122 views

Why is inter-VLAN communication not working in my network set-up in Cisco Packet Tracer?

I have created a simple bus topology connecting 2 switches and a router, with each switch connected to their respective end devices through ordinary star topology. The switch model used was 3560-24PS ...
Trineshen's user avatar
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2 answers
60 views

Migrating SVI for vlans from Catalyst to Nexus

I'm trying to make sure the transition is smooth the mirrored SVI's are already created but not turned on. Do I simply just turn off the SVI's on the pair of old switches and turn it back on the new ...
user1378803's user avatar
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1 answer
169 views

VXLAN VNI VLAN mapping

Is VXLAN tunneling similar to Q-in-Q tunneling (except VxLAN works at Layer 3), such that each customer/tenant gets its own VNI and each VNI can then map to multiple VLANs, so a single VNI can ...
Haswell's user avatar
  • 115
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1 answer
148 views

Mellanox (NVIDIA) SN3700 switch: Cumulus Linux configuration to force traffic path?

I want to stress all ports on a SN3700 switch with iPerf. I want to force the traffic to go through each port, so port 1 to port 2, port 2 to port 3, port 3 to port 4, etc. The switch is running ...
CrystalBryan's user avatar
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1 answer
106 views

Switch ping to router with trunk port

If I have a switch port trunk directly connect to a router with the follow scenario below: -------- g1/0/1 (Trunk) g1/0/1 |------| |switch| Native VLAN 1 SVI=...
Andrew's user avatar
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1 answer
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Configuring multiple public IPs in Cisco 881 to forward private IPs with tags while bandwidth balancing [closed]

The ISP is sending four tagged public IPs (VLAN 30) through one WAN cable. Currently, this cable is connected to a switch that recognizes the tag and distributes it appropriately. Naturally, a router ...
Wilhelmroentgen's user avatar
1 vote
1 answer
107 views

ASA5555-X vlans through port channel not working

I'm havin a problem with my ASA when trying to pass vlans through port channel to a switch. The goal being here that all vlans that we have would go through a single port channel (4 1Gb links for load ...
The amateur programmer's user avatar
1 vote
1 answer
99 views

VTP transparent mode Switch does not pass user traffic to and from other VTP Switches

Practicing on Packet Tracer, I have a topology of four switches named Switch-A, B, C and D. connected with one another in straight line Switch A has two VLANs (Faculty and Students) and is configured ...
sunnyimran's user avatar
1 vote
1 answer
114 views

Access list and interface vlan

Pleasae I am facing this problem, the ping is always successful from 10.16.13.2 to 192.168.0.3 even if Iam configuring the acl in the 'in indirection'. show ip access-list Extended IP access list ...
Asma B's user avatar
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1 answer
41 views

Connecting a hub to my switch bypasses RADIUS/802.1X

I have set up a windows nps server (radius), it works with eap-tls. In the switch when the authentication is validated the port is passed in vlan 100 and when it is refused it is passed in vlan 101. ...
Nivys's user avatar
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1 answer
92 views

Cannot get my servers on the same broadcast domain as backbone gateway using Aruba switches

My supervisor told me to go to the server room and connect a bunch of servers to the Department network so they are accessible from office PCs. In the server room we have 7 servers, a couple of wall ...
Amjal's user avatar
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1 vote
2 answers
159 views

Understanding VLAN Tagging for Network Segmentation

I've been reading up on network segmentation and the use of VLANs to enhance security and network management. However, I'm still a bit unclear about the concept of VLAN tagging. Can someone please ...
Mahesh's user avatar
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1 answer
126 views

I want to set up a MSTP Redundant Network

For the past few days i have been trying to get multiple VLan's working that are redundantly connected. One VLan would be connected through a controller and to the other switch. Then a second cable to ...
TomB's user avatar
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1 answer
123 views

Is this the right way to expose VLANs through VPN (VPN server location)?

Starting from the following network topology: Internet --- ISP Cable Router --- Firewall --- Router --- rest of the network / multiple VLANs (port forwarding) | ...
Kraal's user avatar
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0 answers
80 views

IPsec no working properly

I want to set an IPsec between two routers similar to the one in this lab, however the client on router EAST is NATted with the public IP 98.76.65.42 on the local side EAST(config)# access-list 110 ...
nirvana's user avatar
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2 answers
885 views

Unable to ping across different vlans

I have two switches (A,B) connected to each other and one of them is connected to a router with the interfaces g0/1.1 vlan10 g0/1.2 vlan20 g0/1.99 native switch A has vlan 10 (10.0.0.0/24) switch B ...
nirvana's user avatar
0 votes
1 answer
47 views

Cisco 3650 and wifi hotspot

I have to connect wifi hotspots on cisco catalyst ports of cisco 3650. The wifi controller is connected on 2 ports, because it delivers 2 wifi vlans (6 and 40). The hotspots must receive an IP from ...
AnthonyS's user avatar
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1 answer
93 views

Layer 3 Switch IP Problem on Packet Tracer

I set up a network. It contains vlans. I assigned devices ip addresses from different subnets. I have 2 layer 3 switches to communicate them. I assigned switches ip addresses from different subnet. I ...
shiva13's user avatar
1 vote
2 answers
179 views

Inter-VLAN using L3 switch

There are 3 VLANs 10, 20 and 30 on these switchs. Everything such as VTP, DTP are working fine. The problem is that inter-VLAN seems not to work correctly. IP routing is activated on the L3SW (even ...
Gekko's user avatar
  • 27
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1 answer
70 views

Non VLAN Tagged Traffic Not Going Through Trunk Between Cisco Switches

Good day all. I am running through a packet tracer exercise and am stuck on where to go next. Forgive me if I am missing something obvious, I have not touched any cisco networking or networking in ...
cnrdvdsmt's user avatar
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2 answers
55 views

Trying to achieve ECHO request reaching destination in other VLAN

I'm working in a network on packet tracer, when I'm sending ICMP requests from VLAN 20 (yellow field) to VLAN 10 (turqoise field) the packets get stuck at the switch where it is connected to. Case 2: ...
frisTent's user avatar
0 votes
2 answers
142 views

Can we have two logging source-interface configured on Cisco Switch?

I would like to understand if its possible for us to have two logging source-interface configured on Cisco Switch: logging source-interface vlan1 (For syslogs) logging source-interface vlan2 (For ...
Blake's user avatar
  • 57
1 vote
1 answer
517 views

Cisco interface vlan (shutdown vs no ip address)

What is the difference in functionality between these two commands. interface Vlan10 shutdown interface Vlan10 no ip address I haven't been able to find any source material, but I've seen other ...
Derrick Moeller's user avatar
1 vote
1 answer
162 views

Give internet access with a not VLAN enabled router to two VLAN networks

I'm a bit of a novice in this area. I currently have two VLAN-capable switches (HP ProCurve 2850 2824) and some switches and routers that are not VLAN-capable, more like consumer-level devices (such ...
Neopard's user avatar
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0 votes
2 answers
287 views

How does L2 switch forward tagged VLAN?

I am a student of networking and have a question. I am currently doing an internship / project at a school where they have 3 buildings. I will name them for now A (subnet 172.16.x.x) --> Each with ...
Bartballon's user avatar
0 votes
3 answers
152 views

If all subnets are a part of same vlan, then the network segregation using subnets does not make sense

This is what we know about subnetting. By dividing a network into subnets, you can separate different departments, locations, or security zones, creating distinct broadcast domains. This segmentation ...
RRHS's user avatar
  • 405
0 votes
1 answer
562 views

HSRP and DHCP problem

I have 2 layer 3 switches DS1 and DS2. There are the same VLANs but different IP addresses on VLAN interfaces. On DS1: VLAN 10: 192.168.10.1/24 VLAN 20: 192.168.20.1/24 On DS2: VLAN 10: 192.168.10.2/...
Gekko's user avatar
  • 27
0 votes
1 answer
59 views

Cannot enable link. Why?

I have the following setup: I'm unable to enable Fa0/5. The switch configuration for that port is correct No configuration has been made on the server side: Assigning Ip adresses has not solved the ...
Rubus's user avatar
  • 305
0 votes
1 answer
351 views

Why does this access list block DHCP request?

To prevent IP spoofing in a VLAN I configured the following access list ip access-list extended MITARBEITER permit tcp 10.15.240.0 0.0.0.255 any permit udp 10.15.240.0 0.0.0.255 any permit icmp 10....
Rubus's user avatar
  • 305
0 votes
1 answer
762 views

QinQ does not work with L2VPN (VSI and MPLS L2VC - Switch Huawei)

Currently, I am trying to configure a network to transport multiple VLANs for a client who has points in different locations (Side A and Side B). My idea was to use QinQ for this. The network topology ...
Claudio Elzio's user avatar
0 votes
0 answers
282 views

Cannot tag an interface for a specific VLAN : % Error: Tagged flag mis-match Te 0/3

I trying to tag an interface for a specific VLAN on a Dell S4810 : S4810#show run int ten 0/3 ! interface TenGigabitEthernet 0/3 no ip address mtu 12000 switchport flowcontrol rx on tx on no ...
SebMa's user avatar
  • 135
3 votes
2 answers
310 views

ethernet switching table is empty | vQFX | EVE-NG

I'm new to Juniper switches. I configured vlan10 and assigned two ports to the relevant vlan. root> show vlans Routing instance VLAN name Tag Interfaces default-switch vlan10 ...
Aaqil's user avatar
  • 33
1 vote
0 answers
155 views

Can't Pass 1 VLAN Through Trunk

I have 2 Cisco switches running IOS with VLANS 20,30,40,50. On SWITCH1 I have servers on Ports 1,2&3 on VLAN 30. I also have a laptop on port 5 on the same VLAN 30 and can ping the servers. They ...
JukEboX's user avatar
  • 461
2 votes
1 answer
33 views

Is source source_wildcard-mask necessary when traffic is orginating from a VLAN when access list is applied in direction of the interface (in)

Let's say I have a vlan 1 with domain 192.168.10.0 0.0.0.255...also a vlan 2 with 192.168.20.0. 0.0.0.255..These are connected to router with intervlan enabled. Now I want to implement access list ...
Rubus's user avatar
  • 305
3 votes
1 answer
107 views

Should I be using point-to-point or broadcast if I plan on using SVIs in IS-IS on Juniper?

Apologies in advance if this is super-basic question, still learning ISIS. I'm migrating from Cisco over to Juniper in an environment where all of the switches are running EIGRP, are on a 172.31.255.0/...
user68992's user avatar
2 votes
2 answers
145 views

MST - multiple instance design in single region

I am preparing for migration of this rather simple network layout from RST to MST: From what I have read so far, it looks like the best approach is to avoid interoperability issues and simply rollout ...
quantum's user avatar
  • 177
1 vote
1 answer
69 views

Is non-blocking per-VLAN (rapid) spanning tree configuration possible?

Imagine a pair of switches connected with a couple of trunk links created in the following fashion: Assuming the numbers on lines correspond to different VLANs, how would you arrange a working ...
quantum's user avatar
  • 177
1 vote
1 answer
95 views

Static route is not saved - Why?

I have the following configuration. On R1 I do inter-vlan routing. The problem is when I ping the serial interface of ISP1 with PC MA11 the ping packet is not returned to R1. I wanted to add a static ...
Rubus's user avatar
  • 305
2 votes
1 answer
294 views

How to implement inter-vlan routing in this configuration on L3 switch

I want to enable inter-vlan routing on L3 switch. I have accomplished this by the following commands executed on Gig1/0/16 and Gig1/0/10 and setting the respective (192.168.x.1) as gateway on the ...
Rubus's user avatar
  • 305
0 votes
1 answer
133 views

Tag Control Information Byte Order

I need to extract the 12-bit VLAN ID from the 16-bit TCI section of the 802.1Q tag in an Ethernet frame. I already have the TCI extracted and stored as a uint16_t. I know that bytes arrive in Big ...
underwaterjesus's user avatar
0 votes
1 answer
192 views

How should edge switches have their routing configured (when there is a mgmt vlan in the mix)

I'm having trouble with a new network topology we are trying to implement onto our environment. The issue seems to be with the switches. The problem is not relevant to this question but for ...
shafuq's user avatar
  • 137
0 votes
1 answer
84 views

A newbie question about VLAN

Sorry for asking this. I am not a network engineer, but I do plan my own network, and know a little on how things moved. But I am not familiar on the terms being used. Now, suppose I have these ...
Magician's user avatar
  • 103
1 vote
2 answers
774 views

Exclude a certain vlan/subnet from layer3 inter-vlan routing

We have new gen aruba (hpe) switches in our environment. There is a backbone (5412R zl2) which all edge switches are connected to. The edge switches are also layer 3 (2930F). The backbone delivers ...
shafuq's user avatar
  • 137
1 vote
0 answers
50 views

Restconf not getting switchport vlan information

I have a couple of catalyst switches which I'm experiencing an interesting issue using APIs not pulling all the information I need. The switches are running IOS-XE 17.6.3, but I have also seen the ...
speirsington's user avatar
0 votes
1 answer
246 views

Is it possible to establish communication using just an ethernet cable?

I have two linux systems, server and client, whose both ethernet port has VLAN tagging(preconfigured IP address and same subnet), and connected with a common ethernet cable (no router or network ...
manasvb's user avatar

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