VLAN trunk via MPLS

Is it possible to run a VLAN trunk (DOT1Q) from a Central site to a remote over a MPLS connection?

You can do that either by using dot1q tunnelling or port based EoMPLS. For a description of these two features, please refer to the following document:
http://www.cisco.com/en/US/products/sw/iosswrel/ps5013/products_feature_guide09186a0080088187.html
Hope this helps,

Similar Messages

  • How many VLANs supported via MACsec VLAN-trunk link?

    Hi,
    Any one know how many VLANs maximum allowed across a MACsec link between two C6500 with Sup2Ts or between two N7K respectively?
    As far as I know, C3750X has limitation of 8 VLANs, according to
    •Cisco TrustSec enforcement is supported only on up to eight VLANs on a VLAN-trunk link. If there are more than eight VLANs configured on a VLAN-trunk link and Cisco TrustSec enforcement is enabled on those VLANs, the switch ports on those VLAN-trunk links will be error-disabled.
    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
    Thanks,
    Cedar

    Hi,
    Any one know how many VLANs maximum allowed across a MACsec link between two C6500 with Sup2Ts or between two N7K respectively?
    As far as I know, C3750X has limitation of 8 VLANs, according to
    •Cisco TrustSec enforcement is supported only on up to eight VLANs on a VLAN-trunk link. If there are more than eight VLANs configured on a VLAN-trunk link and Cisco TrustSec enforcement is enabled on those VLANs, the switch ports on those VLAN-trunk links will be error-disabled.
    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
    Thanks,
    Cedar

  • Encrypting vlan-trunk traffic between switches

    Hi,
    Can anyone guide me to some papers or other resources on how to encrypt traffic between 2 switches. The switchces will be connected with fiber and use dot-1q tagging. And I wan't to encrypt all of the trunked traffic.
    I was thinking of L2TP, but I haven't found any good description on how to implement this. I have two 3750 switches I thought I might use.
    Thanks for any input,
    Regards,
    Oyvind Mathiesen
    mnemonic
    Norway

    Hi,
    Thanks for the response. I had a look at MACsec and it looks good. I would have liked to employ something P2P though, to also limit the ammount of MAC addresses broadcasted on the "wire". But let me first give you an understanding of the task:
    We have two sites, connected via fibre and we want to create a VLAN trunk across and order to expand the broadcast domains to te other site.
    The IDIOT carrier, has a limitation on the number of MAC addresses they allow on the fibre service, 100.
    We also need to encrypt the datatraversing this connectivity.
    MACsec wuold work 100% exept the source and dstination MAC addresses are still sent (at least according to https://docs.google.com/viewer?a=v&q=cache:LEf2qOmYZyYJ:www.ieee802.org/1/files/public/docs2011/bn-hutchison-macsec-sample-packets-0511.pdf+&hl=en&gl=za&pid=bl&srcid=ADGEESgmAHXpDOY0RBAE-Rv1HDpu_C_gkeSPN4cv6NGgyP0M1aXVu0UqzCfxo8t_P41ep6J37k4OLKnjfp1M9hoTDHxY22WGz2h7yB7YRLyPvRUbGS8TICzvEMlG92xqbhy6RWFugmnj&sig=AHIEtbTfu0LQIJejdYidE6yzq4lpPifxjQ
    And that would cause me to eat into the 100 MAC limit.
    Ridiculous I know, but we are looking for an out-of-the-norm plan...
    Thanks

  • VLAN trunking from Cisco Catalyst 3750 to Cisco SF300-48P issue and related

    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

  • Does the 8540 support VLAN Trunking

    I would like to VLAN trunk four VLANs(8540 bridge-groups) from an 8540 switch router to a Cat 5000. I have not seen in Cisco's documentation anything that indicates that the 8540 supports VLAN trunking.

    8540 supports both ISL and 802.1q VLAN trunking
    http://www.cisco.com/univercd/cc/td/doc/product/atm/c8540/12_1/pereg_1/quick_cg/layer3.htm#39775

  • Cisco VLAN Trunking Protocol Vulnerability

    I have got a cisco 2821 model router with a c2800nm-advipservicesk9-mz.151-2.T4 IOS, and was reported with 'Cisco VLAN Trunking Protocol Vulnerability'.
    Though the device is in server mode, I do not have any domain name or trunk port configured.
    Is my device really vulnerable? If yes, whats next?

    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

  • VLAN Trunking and GVRP

    Decided we'd give the Cisco 300 series switches a try and see
    what we think about them compared to our Cisco Catalyst 2960 switches.
    I'm already stumped on setting up VLAN trunking between 4 switches. Do I have to manually setup all the VLAN's on each switch? I set them up on the first switch and was expecting GVRP would propagate them to the others like VTP.
    Denny

    Decided we'd give the Cisco 300 series switches a try and see
    what we think about them compared to our Cisco Catalyst 2960 switches.
    I'm already stumped on setting up VLAN trunking between 4 switches. Do I have to manually setup all the VLAN's on each switch? I set them up on the first switch and was expecting GVRP would propagate them to the others like VTP.
    Denny

  • WRVS4400N VLAN trunking question

    Hi all,
    I just got a SRW224G4 today my main objective is to trunk 30 VLAN(s) to my WRVS4400N for interVLAN communication. So far I set G1 on my SRW as a trunk port and linked it to port 2 on my WRVS4400N (which is also set as a trunk).
    So far no good when I go into LAN settings I do not see an option wheree I can set DHCP addresses or gateways for these VLAN(s). Is this even possible with the WRVS4400N I meen if Linksys is going to provide a small business solution atleast their equipment should support VLAN trunking with each other.
    If anybody knows the solution to this please let me know.
    Cheers

    From what I know, although the WRVS4400N has support for port based VLAN setup, it does not give you the option to set different DHCP addresses for each of the 4 VLANS.

  • SG200 vlan trunking?

    Hello,
    does SG200 supoort VLAN Trunking?

    Hello, I think there is support:
    I found this site too which shows how to configure it: http://lachlanmiskin.com/blog/2012/08/01/cisco-sg-200-08-trunking/
    Cisco's datasheet says it supports tagging 802.1q.
    http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps11229/data_sheet_c78-667827.html
    Hope this helps.
    Please rate useful posts and remember to mark any solved questions as answered. Thank you.

  • 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.

  • Vlan trunk problem

    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.

  • CE-500 VLAN trunks

    I have not been able to configure a VLAN trunk at a CE-500. I configure the port using CNA as router and specify the native VLAN, but I do not know where to specify the allowed VLANs. The port is connected to a Cisco Router with sub-interfaced configured. When I click on "modify" the smartport, an small windows quicky opens and closes, only leaving an option for the native VLAN. What am I doing wrong? How do I specify a port as a trunk port?
    Thanks a lot for the help.
    Juan S

    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.
    1. What error message you receive at the console while implementing trunking?
    2. What is the other end device with which you are trying to establish trunk?.

  • Implementing MPLS over VLAN trunk

    We are investigation the options of running MPLS between our two core switches (C6509 with dual Sup720s) with the aim of introducing MPLS VPNs. These two core switches are linked via a Layer 2 trunk in a collapsed backbone topology.
    Is it possible to create a point-to-point MPLS-enabled link between these switches on a VLAN interface between these switches, rather than an a dedicated physical port? It is anticipated that these two core switches will be PE routers (also acting as RRs, if required).

    Its possible to run MPLS on any media with IP configurable for it. So till you have IP reachbility on a media, you can run MPLS.
    As in your case you can very well run MPLS on an SVI reachable both sides over a trunk.
    But as a after thought, why do you want to do this, although its possible, why do you want to carry other vlans on the same trunk which also carrier the internconnect vlan for the PE's.
    HTH-Cheers,
    Swaroop

  • Problem with VLAN Trunking within RHEL6.6 VM on Hyper-V 2012 R2?

    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):
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        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

  • Point to Mulipoint L2VPN trunks over MPLS

    Can we have trunk between more than 2 CE over MPLS in short we are looking for the point to multipoint MPLS L2 VPN where more than 2 CE will share the common ethernet segment over MPLS  to share the vlan database
    Let me give more info @ solution which we are trying find out
    CE1,CE2,CE3 & CE4 are the core switches at respective location, we are looking for the same vlan database between these core switches over the MPLS
    CE1 will be connected to PE1
    CE2 will be connected to PE2
    CE3 will be connected to PE3
    CE4 will be connected to PE4
    so can we have the L2 vpn between CE1,CE2,CE3 & CE4 where the interface connected to respective PE's will be TRUNK ?

    hi
    thanks for the pdf, I had tried the VPLS earlier. the circuit are coming up but I am not able to ping between CE's Vlan ip address although VC are up
    PE end config
    interface GigabitEthernet1/35
    description L2 Connectivity to KBL039SW1 (TEMP)
    switchport
    switchport access vlan 100
    switchport mode dot1q-tunnel
    l2protocol-tunnel cdp
    CE-1 end config
    interface FastEthernet1/0/48
    switchport trunk encapsulation dot1q
    switchport mode trunk
    end
    int vlan 100
    ip address 10.10.10.1 255.255.255.0
    other end vlan 100 ip address is 10.10.10.2 but not able to ping this ip address from CE-1
    any guess what cpuld be the problem?

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