Questions tagged [trunk]
For questions about trunks, layer-2 links across which traffic for multiple VLANs travel.
188 questions
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Unable to ping/Scan Profinet PLC Device Through Siemens SCALANCE X108 connected to Cisco VLAN-Based Switches
I'm facing an issue with network connectivity to a Profinet PLC device and would appreciate some help. Here's the setup:
PC ↔ DLINK Switch ↔ Cisco C2960 ↔ SCALANCE X108 ↔ PLC Device
Only Managed ...
- 21
0
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2
answers
164
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How to create EtherChannel / Link aggregation between two HP switches - on dissimilar port speed
I have the following network architecture between 2x HP 5900 switches located about 2kms apart
Switch 1 ----2 kms ------ Switch 2
Laser Link 10G <---------- > Laser Link 10G
MW link 150M <----...
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1
answer
137
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access to the switch from another network does not work
Eve ng development environment.
There is no access from another subnet to the switch.
The switch has an int vlan 100 with an ip address, trunk port and ip default-gateway 192.168.100.1.
The router has ...
1
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1
answer
453
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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
...
- 11
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1
answer
840
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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 ...
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1
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152
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Switch Configuration - Change the trunk allow VLAN
May i know any service interruption if i issue the command on changing the trunk allowed vlan on both end:
switchport trunk allowed vlan 10, 20, 30 to switchport trunk allow vlan 10, 20, 30, 40
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1
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470
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Why its need to use trunking when using etherchannel? [duplicate]
what's the reason to use trunking by using the 2 below commands:
switchport trunk encap dot1q
change the mode to trunk
between EtherChannel ports
the second question why to make native vlan under ...
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0
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607
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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 ...
- 135
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1
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141
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what is the relation between DTP and VTP?
the ideas behind VTP & DTP are different, then why do we need to make sure that the VTP domain on both sides is the same otherwise the DTP will not work?
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508
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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 ...
- 485
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1
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No Ping Through Cisco Trunks
I am trying to ping on my management VLAN across a trunk between 2 Cisco switches. Both switches have the following configs
interface TenGigabitEthernt1/1/1
switchport trunk native vlan 5
switchport ...
- 485
1
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4
answers
4k
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Communication between different VLANs
In my previous understanding, there is no way to communicate between two VLANs using only layer 2.
After all, this is the purpose of having VLAN.
I found a forum that claims the following.
1.VLANs can ...
- 323
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Nexus 7706 - switchport trunk allowed vlan not working - all VLANs are being allowed
I noticed that my two Nexus 7706 do not limit the trunk VLANs to what switchport trunk allowed vlan is set to.
Sample configuration:
interface Ethernet1/15
switchport
switchport mode trunk
...
- 226
2
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1
answer
956
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How do you drop (or ignore or filter) all untagged traffic on an 802.1q trunk port?
This answer says "[a] trunk has optionally one untagged VLAN and many tagged VLANS."
I always thought specifying switchport mode trunk would drop untagged frames at that port, but that ...
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608
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What does `switchport trunk native <n>` do when in `switchport mode trunk`?
According to this article Cisco recommends VLAN 99 for the "native VLAN".
But what is the point when operating under switchport mode trunk?
Doesn't switchport mode trunk filter all tagged ...
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