VLAN trunking newbie SRW208MP to SRW2008MP

Hello All,
Just need a simple setup - 2 VLANs, a few ports each, on each unit, trunked together (ultimately on SFP module). Tried what seems to be right but (natch) not working. Just need simple guidelines to see where am going wrong. Thanks!

OK, well, using that example, as well as another thread here (Cisco SLM224P
VLAN TRUNKING), I reset and redid all the VLAN related settings.
There are 2 subnets in play here -
10.51.0.0/255.255.252.0 - VLAN 1 - Used as the Management VLAN.
10.51.4.0/255.255.255.0 - VLAN 5 - A subnet for Wireless LAN POE connection and management.
And 2 switches -
198 is a SRW208MP, remote unit. will have single WAP and various devices.
199 is a SRW2008MP, at head end near subnet(s) source. Will have up to 4 WAPs and the
connections required to provide for both subnets.
For purposes of discussion, the planned fiber SFP interconnect is being played by a copper trunk.
Setups follow:
198 VLANs-
198 Port Setting-
198 Ports to VLAN 1-
198 Ports to VLAN 5-
198 VLAN to Ports-
Unit 2 - 199
199 VLANs-
199 Port Settings-
199 Ports to VLAN 1-
199 Ports to VLAN 5-
199 VLAN to Ports-
The configuration as posted does not provide the expected results.
I am convinced I am overlooking something simple. Usually is!
The net results are that the Management VLAN (1) is present and accounted for on both switches, but that could even be because they are acting as switches do.
The VLAN 5, however, does not function at either end. The 'Local' switch, 199, shows traffic on the WAP ports but no traffic of any consequence is traversing and the WAPs are nonresponsive.
Ditto Remote switch. Management VLAN yes, 5 VLAN no.
Any suggestions greatly appreciated.

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Hi Alex,
for the trunk port on Catalyst on port GE 1/0/45, we need to enable the trunk and for on encapsulation dot1q because this catalyst model is ISL capable also and the SF300 working only with Dot1q Encapsultion
The configuration on catalyst should :
#config terminal
#interface Gi 1/0/45
# switchport encapsulation
#switchport trunk encapsulation dot1q
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#switchport trunk allowed vlan 101-103
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As far as I know, C3750X has limitation of 8 VLANs, according to
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http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-0_2_se/configuration/guide/3750x_cg/trustsec.html
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Hi,
Im configuring a vlan trunk between 2 switches but I'm having a problem somehow.
Switch 1 a Cisco 3750G n
name: alrswcc00
interface GigabitEthernet1/0/28
description Uplink Alrswcc20
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-30
switchport mode trunk
end
Name: Gi1/0/28
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: 1-30
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Switch 2 a Cisco 2960S
name: alrswcc20
interface GigabitEthernet1/0/25
description Uplink Alrswcc00
switchport trunk allowed vlan 1-30
switchport mode trunk
end
Name: Gi1/0/24
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 10 (Inactive)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: 10,20,30,40
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Then lastly on switch 2 I created a port for an Ubiquiti access point with following settings.
interface GigabitEthernet1/0/24
switchport trunk native vlan 10
switchport trunk allowed vlan 10,20,30,40
switchport mode trunk
end
But my AP doesn't seem the get an IP. Where as if I plug it in on Switch 1 it does with the same settings.
So I am assuming there is something wrong with my trunk. What am I doing wrong?
Thank you,
Michael

Here are a couple of observations:
1. The switchport trunk encap dot1q command was not applied on the 2960 because 802.1q trunking is the default. The 2960 series switches do not support ISL encapsulation, as the OP observed. There is, therefore, no need to manually specify the trunking protocol. The show int g1/0/24 switchport command confirmed that trunking is working.  I find the show int g1/0/24 trunk command to be more informative in this context. It tells you what VLANs are active and trunking between the connection.
2. You do need to define VLANS 2-30 on your second switch. You can do so manually or you can configure VLAN Trunking Protocol (VTP). VTP is your easiest bet. Example config:
Switch 1
sw1(config)# vtp mode server
sw1(config)# vtp version 2
sw1(config)# vtp domain MY_DOMAIN
sw1(config)# vtp password MySecret
Issue a show vtp status in priv exce mode to very your settings.
Switch 2
sw2# show vtp status
Do this command FIRST and make sure that the configuration revision number is smaller than the revision number of SW1.
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 255
Number of existing VLANs          : 25
Configuration Revision            : 174
If config revision on SW2 is greater than config revision of SW1, then issue following command:
SW2(config)# vtp domain bogus
SW2(config)# vtp domain MY_Domain
SW2(config)# do show vtp status
Your config revision should go back to zero.
Now issue the same commands on SW2.
SW2(config)# vtp version 2 (pretty sure that is default, but I issue it anyway)
SW2(config)# vtp mode client (means you cannot define VLANs on this switch. Most admins prefer that only one switch be capable of creating VLANs).
SW2(config)# do sh vtp status
The config revision was important because injecting a switch into your network that has a higher VTP revision can overwrite your existing VLAN database. If that happens, chances are that most of your network traffic will cease to function as all of your access ports will be in a VLAN mismatch mode.

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I believe you are aware of creating the standard Cisco IOS procedure for creating VLAN trunks.
under the interface configuration mode, in which you need to create a trunk,
switchport mode trunk
switchport mode trunk encapsulation isl/dot1q
switchport mode trunk native vlan
switchport mode trunk allowed vlans
But if you are already using these commands correctly, still you have the problem, I want you to let me know the following informations.
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Hello expert,
I'm having difficulties to configure VLAN trunking between Cisco Catalyst 3750 switch with Cisco SF300-48P switch and my workstation unable to get any DHCP IP from our DHCP server via Cisco SF300-48P switch. Below is the snippet of configuration on both switches:
[Cisco Catalyst 3750 Switch]
interface GigabitEthernet1/0/45
description NCC-CC-1stFlr
no switchport trunk encapsulation dot1q
no switchport trunk allowed vlan 101-103
spanning-tree portfast
[Cisco SF300-48P Switch]
interface fastethernet48
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 101-103
macro description switch
!next command is internal.
macro auto smartport dynamic_type switch
interface fastethernet29
switchport mode general
switchport general allowed vlan add 103 tagged
switchport general pvid 103
Are these are correct? Kindly advice!
Thank you very much!
Regards,
Alex

Hi Alex,
for the trunk port on Catalyst on port GE 1/0/45, we need to enable the trunk and for on encapsulation dot1q because this catalyst model is ISL capable also and the SF300 working only with Dot1q Encapsultion
The configuration on catalyst should :
#config terminal
#interface Gi 1/0/45
# switchport encapsulation
#switchport trunk encapsulation dot1q
#switchport mode trunk
#switchport trunk allowed vlan 101-103
#spanning-tree portfast
For SF300 the port trunk it looks fine but for the port where the PC should receive an IP address
#interface fastethernet29
#switchport mode access
#switchport ccess vlan 103
Please let me know after this configuration
Thanks
Mehdi
Please rate or mark as answered to help other Cisco Customers

How to configure a port channel with VLAN trunking (and make it work..)

We're trying to configure a port channel group with trunked ports to connect a NetApp HA pair. We want to create two data LIFs and connect them to the switch stack. We are trying to create 2 data lifs, one for cifs and one for nfs that are on different vlans.
We want the same ports to be able to allow multiple vlans to communicate. (trunked)
These data lifs should be able to fail over to different nodes in the HA pair and still be able to communicate on the network.
What this means is that we have to connect 4 ports each for each node in the NetApp HA Pair to the switches and create a port channel of some type that allows for trunked vlans. When we configure the ports, the configuration is as follows (below):
We are only able to configure an IP on one of the vlans.
When we configure an IP from another vlan for the data lif, it does not respond to a ping.
Does anyone have any idea what I'm doing wrong on the Cisco switch?
interface GigabitEthernet4/0/12
description Netapp2-e0a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
channel-protocol lacp
channel-group 20 mode active
end
interface GigabitEthernet4/0/13
description Netapp2-e0c
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
channel-protocol lacp
channel-group 20 mode active
end
interface GigabitEthernet6/0/12
description Netapp2-e0b
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
channel-protocol lacp
channel-group 20 mode active
end
interface GigabitEthernet6/0/13
description Netapp2-e0d
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
channel-protocol lacp
channel-group 20 mode active
end
interface Port-channel20
description Netapp2-NFS
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
spanning-tree portfast
spanning-tree bpduguard enable
end

Our problem was fixed by the storage people. They changed the server end to trunk, and the encapsulation / etherchannel.
I like all the suggestions, and they probably helped out with the configuration getting this to work.
Thanks!
interface Port-channel20
description Netapp2-NFS
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
switchport mode trunk
interface GigabitEthernet4/0/12
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
switchport mode trunk
channel-protocol lacp
channel-group 20 mode active
interface GigabitEthernet4/0/13
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
switchport mode trunk
channel-protocol lacp
channel-group 20 mode active
interface GigabitEthernet6/0/12
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
switchport mode trunk
channel-protocol lacp
channel-group 20 mode active
interface GigabitEthernet6/0/13
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,511,519
switchport mode trunk
channel-protocol lacp
channel-group 20 mode active

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Hello,
I'm wondering if there is a known issue with using a "trunk" mode interface within a RHEL6.6 VM? I found the following article:
https://technet.microsoft.com/en-us/library/dn531026.aspx
Where note 1 reads:
"For this specific RHEL/CentOS release, VLAN tagging may not work when used in conjunction with trunk mode".
I've been fighting with this for the better part of a day and can't figure out what I'm doing wrong. I have a RHEL 6.6 VM with two NICs. The first NIC is a standard access mode NIC - no problems there.
The second NIC has been set up as follows (via PowerShell):
    $a=Get-VmNetworkAdapter -VMName "My VM"
    Set-VMNetworkAdapterVlan -Trunk -VmNetworkAdapter $a[1] -AllowedVlanIdList 101-105 -NativeVlanId 1
Note that the physical switch and switchports are configured to send tagged packets for these VLANs as well.
I then set up a VLAN (eth1.102) based interface in the VM ... and never receive any traffic on it.
What I've observed is that:
A VM on the same physical host using the same virtual switch can communicate with the VM on the tagged VLAN
A pcap of the "eth1" interface (to which eth1.102 is bound) shows traffic for VLANs 101 through 105 arriving ... I just never see the traffic for VLAN 102 forwarded to the eth1.102 interface
An identical network configuration using Ubuntu 14.04.01 LTS works exactly as expected
It's this last point that has me wondering if the problem is with RHEL and not Hyper-V (or the physical/virtual switches involved).
I'm curious if anybody else has seen this behavior or, if RHEL 6.x is working for you, if you're using Intel or Broadcom NICs on the physical Hyper-V host?
Thanks,

This is indeed a known issue with RHEL.   There's a bug open with Red Hat on the issue, and our understanding is that they have a fix in progress that will be part of a RHEL 6.6 update.  You might inquire with Red Hat regarding
their bugzilla #1135347.
Michael Kelley, Lead Program Manager, Open Source Technology Center

VLAN trunking on Hyper-V from SCVMM 2012 R2

hi All,
I have a multiple Hyper-V host, each hyper-V host have 2 physical NIC, 1 Physical NIC connected to Management Network, and the other 1 Physical NIC connected to Production LAN.
We have 5 VLAN ID in Production LAN,
based on my experience we can set VLANID's on Network Adapter in VM level, and also we can set VLAINID's on Virtual Switch but only for single VLAN not multiple VLAN.
The question are as following:
1. Can we set Trunk on Virtual Switch from SCVMM 2012 R2 console? On this article http://technet.microsoft.com/en-us/library/hh848475.aspx, we can set Trunk for VM by using Set-VMNetworkAdapterVlan, not for virtual switch.
2. In SCVMM, we can create Logical Network put the VLAN and subnet, create Logical Switch, port profile, port classification, and associate the Logical Switch to Logical Network. Then we need to add the Logical Network to Hyper-V host. is it means
that the logical switch become Trunk mode?
Regards,
Endrik
Endrik | blog: itendrik.wordpress.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading
the thread.

Hi Lopez,
Ya, just create vswitch without vlanid, then add vlan id on VM network adapter, and config the switch port behind the server. It's just work.
thanks
Endrik
Endrik | blog: itendrik.wordpress.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading
the thread.

VLAN trunking newbie SRW208MP to SRW2008MP

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