Incompatibility of VLAN native of CDP
Hello, I have problems with incompatibility of VLAN native between two Cisco switches. I'm confused why other manufacturing going on works, but Cisco didn't. Can I blame CDP here and I hope that a solution for this? Thank you very much! Tomas
Hello
The vlan native must be the same for both switches. On the 3750 vlan native is 35 and on the 2960 vlan 1 native. Try to change 1 to 35 on the 2960 and test again.
HTH
Tags: Cisco Network
Similar Questions
-
WLC - incompatibility of VLAN native
Can someone tell me or point me in the right direction for the method to define a vlan on the WLC native? I have a 3750 which shows an inconsistency of vlan native's 4402.
Hello - take a look at this link
:
http://www.Cisco.com/en/us/Tech/tk722/tk809/technologies_configuration_example09186a008070ba8f.shtml
explains the config switch WLC and uplink.
HTH
Andy
-
Change the order of VLAN native?
Can someone refresh me please as to what the command is to change the VLAN native for the whole switch? (IE: not only on the trunk, I mean the default native for the whole switch). Thank you
Can someone please refresh me as to what the command is to change the Native VLAN for the entire switch? (IE: not just on the trunk, I mean the default native for the entire switch). Thanks
Hi Steve,.
By default, there is only one VLAN for all ports. This VLAN is called by default. You can't rename or delete VLAN 1.
If you're talking about a management VLAN is nothing else than a VIRTUAL local network that is used for managing in-band of the network switching devices. To configure this on a switch, you must create a Switch Virtual Interface (SVI) that is mapped to this VLAN, and then assign this virtual interface an IP address. On a Cisco switch, it would look like the following.
Interface Vlan99
IP 192.168.1.1 255.255.255.0
No tapI also want to make something very clear. Your management VLAN is not to be identical to your VLAN native. Question, please make sure that they are different. Your management VLAN must only carry the traffic of in-band management and should not be the default VLAN. By in-band management traffic, I am referring to SSH or telnet (Although telnet is not recommended because it is not safe). Traffic such as BPDUS, PagP, CDP, use the VLAN native who is the vlan 1. But if you change the vlan native then CDP, VTP/PagP will always use the vlan 1 but packages will be marked. Only DTP uses vlan native so if you have changed the vlan native then DTP would use the new VLAN to send images. With PVST + BPDUS of course run on all the VLANS.
Hope to help!
So useful note the position
Ganesh.H
-
Client VPN access to VLAN native only
I have a router 2811 (config below) with VPN set up. I can connect through the VPN devices and access on the VLAN native but I can't access the 10.77.5.0 (VLAN 5) network (I do not access the 10.77.10.0 - network VLAN 10). This question has been plagueing me for quite a while. I think it's a NAT device or ACL problem, but if someone could help me I would be grateful. Client VPN IP pool is 192.168.77.1 - 192.168.77.10. Thanks for the research!
Current configuration: 5490 bytes
!
version 12.4
horodateurs service debug datetime msec
Log service timestamps datetime msec
encryption password service
!
2811-Edge host name
!
boot-start-marker
boot-end-marker
!
enable secret 5 XXXX
!
AAA new-model
!
AAA authentication login userauthen local
AAA authorization groupauthor LAN
!
AAA - the id of the joint session
!
IP cef
No dhcp use connected vrf ip
DHCP excluded-address IP 10.77.5.1 10.77.5.49
DHCP excluded-address IP 10.77.10.1 10.77.10.49
!
dhcp Lab-network IP pool
import all
Network 10.77.5.0 255.255.255.0
router by default - 10.77.5.1
!
pool IP dhcp comments
import all
Network 10.77.10.0 255.255.255.0
router by default - 10.77.10.1
!
domain IP HoogyNet.net
inspect the IP router-traffic tcp name FW
inspect the IP router traffic udp name FW
inspect the IP router traffic icmp name FW
inspect the IP dns name FW
inspect the name FW ftp IP
inspect the name FW tftp IP
!
Authenticated MultiLink bundle-name Panel
!
voice-card 0
No dspfarm
!
session of crypto consignment
!
crypto ISAKMP policy 1
BA aes 256
preshared authentication
Group 2
life 7200
!
Configuration group customer isakmp crypto HomeVPN
key XXXX
HoogyNet.net field
pool VPN_Pool
ACL vpn
Save-password
Max-users 2
Max-Connections 2
Crypto isakmp HomeVPN profile
match of group identity HomeVPN
client authentication list userauthen
ISAKMP authorization list groupauthor
client configuration address respond
!
Crypto ipsec transform-set esp - aes 256 esp-sha-hmac vpn
!
Crypto-map dynamic vpnclient 10
Set transform-set vpn
HomeVPN Set isakmp-profile
market arriere-route
!
dynamic vpn 65535 vpnclient ipsec-isakmp crypto map
!
username secret privilege 15 5 XXXX XXXX
username secret privilege 15 5 XXXX XXXX
Archives
The config log
hidekeys
!
IP port ssh XXXX 1 rotary
!
interface Loopback0
IP 172.17.1.10 255.255.255.248
!
interface FastEthernet0/0
DHCP IP address
IP access-group ENTERING
NAT outside IP
inspect the FW on IP
no ip virtual-reassembly
automatic duplex
automatic speed
No cdp enable
vpn crypto card
!
interface FastEthernet0/1
no ip address
automatic duplex
automatic speed
No cdp enable
!
interface FastEthernet0/1.1
encapsulation dot1Q 1 native
IP 10.77.1.1 255.255.255.0
IP nat inside
IP virtual-reassembly
!
interface FastEthernet0/1.5
encapsulation dot1Q 5
IP 10.77.5.1 255.255.255.0
IP nat inside
IP virtual-reassembly
!
interface FastEthernet0/1.10
encapsulation dot1Q 10
IP 10.77.10.1 255.255.255.0
IP access-group 100 to
IP nat inside
IP virtual-reassembly
!
interface FastEthernet0/0/0
no ip address
Shutdown
automatic duplex
automatic speed
!
interface FastEthernet0/1/0
no ip address
Shutdown
automatic duplex
automatic speed
!
router RIP
version 2
10.0.0.0 network
network 172.17.0.0
network 192.168.77.0
No Auto-resume
!
IP pool local VPN_Pool 192.168.77.1 192.168.77.10
no ip forward-Protocol nd
!
IP http server
no ip http secure server
overload of IP nat inside source list NAT interface FastEthernet0/0
!
IP extended INBOUND access list
permit tcp any any eq 2277 newspaper
permit any any icmp echo response
allow all all unreachable icmp
allow icmp all once exceed
allow tcp any a Workbench
allow udp any any eq isakmp
permit any any eq non500-isakmp udp
allow an esp
allowed UDP any eq field all
allow udp any eq bootps any eq bootpc
NAT extended IP access list
IP 10.77.5.0 allow 0.0.0.255 any
IP 10.77.10.0 allow 0.0.0.255 any
IP 192.168.77.0 allow 0.0.0.255 any
list of IP - vpn access scope
IP 10.77.1.0 allow 0.0.0.255 192.168.77.0 0.0.0.255
IP 10.77.5.0 allow 0.0.0.255 192.168.77.0 0.0.0.255
!
access-list 100 permit udp any eq bootpc host 255.255.255.255 eq bootps
access-list 100 permit udp host 0.0.0.0 eq bootpc host 10.77.5.1 eq bootps
access-list 100 permit udp 10.77.10.0 0.0.0.255 eq bootpc host 10.77.5.1 eq bootps
access-list 100 deny tcp 10.77.10.0 0.0.0.255 any eq telnet
access-list 100 deny ip 10.77.10.0 0.0.0.255 10.77.5.0 0.0.0.255
access-list 100 deny ip 10.77.10.0 0.0.0.255 10.77.1.0 0.0.0.255
access ip-list 100 permit a whole
!
control plan
!
Line con 0
session-timeout 30
password 7 XXXX
line to 0
line vty 0 4
Rotary 1
transport input telnet ssh
line vty 5 15
Rotary 1
transport input telnet ssh
!
Scheduler allocate 20000 1000
!
WebVPN cef
!
end
If you want to say, that after the way nat rules which I have proposed, you lost the connection to the VLAN native, so yes, it's because the subnet VLANs native has not been included in this acl with Deny statement. So that the ACL should look like this:
NAT extended IP access list
deny ip 10.77.5.0 0.0.0.255 192.168.77.0 0.0.0.255
deny ip 10.77.1.0 0.0.0.255 192.168.77.0 0.0.0.255 //This is not respected
allow an ip
In addition, if you want to go throug the other tunnel inside the subnet not listed above, then you should include that subnet to the NAT exemption rule with Deny statement.
-
Catch 22 - Port Network Configurations: how to combine identifiers VLAN native with DHCP (but allow the virtual computer)
I came across a Catch 22. Maybe someone can restore the directly here. I found a "witch hunt" for sure.
It comes with the Ports of junction on the side of the switch of the ESX host network.
Context:
Ok. The Setup is a HP Blade C7000 enclosure. I try to configure ports for switching to the blades. ESX 3.5 U4 will be installed the BL460cs. Installation is preferred method: revive unattended. No problem with the syntax of Kick-Start,
I am here, it's the side network.
The problem:
I find a major complication in that the switch ports must be configured for both traffic Service Console and VMkernel, more Virtual Machine since only two NICs by blade. Not best practices, but we have only two switches Cisco 3020 inside. The two uplink physical NIC is paired in the same vSwitch. (No iSCSI does fortunately).
So the Catch 22 question is as follows:
If the id VLAN native set up on the switch port, DHCP works of course and the VMware boot loader is able to grasp a binary / packets on the network (FTP Site) and install OK. But after no installation, no communication with SC unless I set the VLAN id of the SC to '0 '. The value "4" 0 does not communication, but "40" is the VLAN native.
If id configuring VLAN native retired from the Switch port, DHCP will not work and host does not have IP address during the VMware boot process. This is as expected as traffic without label is not assigned an eligible
VLAN, so no comms.
The Port of the Switch configuration:
interface GigabitEthernet0/16
SERVERNAME description
switchport trunk encapsulation dot1q
switchport trunk vlan native 40
switchport trunk allowed vlan 40-254
switchport mode trunk
switchport nonegotiate
Speed 1000
No cdp enable
spanning tree portfast trunk
end
Summary
OK, let's summarize where things are and if possible please attach responses to their digital identity.
(1) is there a way to delete the VLAN tagging altogether side ESX host? Not only the id '0 '. The problem is with clearly with the VLAN native defined as "40". If "40" IDs specified on the Group of ports for the Service Console, no joy, no comms. If the id of '0' value, capable of ping gateway and communicate on the network.
(2) what is the problem with the definition of VLAN native as "40" when the config for the switch port is set as VLAN native "40"? Or if it was a problem? Both parameters clearly do not work together.
(3) a switch receiving a unmarked frame it will assign to the VLAN Trunk native. Ok. Trunking bases and why I need a VLAN specified on the port for DHCP native work. But it seems that since the id VLAN is set manually even as VLAN native, closed communications and no traffic as possible.
(4) executives made tag 802. 1 q VLAN native? I think that it is not and this could well be the problem. Since the id VLAN "40" is not labeled, but try to score the side host vSwitch port group.
Please let me know your thoughts, community and how in general, we are approaching 2 NIC ESX configurations.
When trunking multiple VLANs, you either have a default VLAN is nothing is tagged, or you don't. That's what the vlan native to you, it defines which VLAN would be used if no tag is visible on the packets traversing the network. For servers, if you are marking, then everything has to tag, if you're not marking at the server level, then the port must be either an access port or a VLAN native or default must be set. I also don't keep your service console the same network as your vm. Keep this isolated for the security of the network. If you isolate this VLAN, you can separate and use a single IP address for installation and one for post construction.
Or, you can provide an IP address during the build.
-KjB
VMware vExpert
-
Hello
the vlan native of my ports trunks is not the vlan by default 1. so, how do you define an id vlan different native then 1 on the LRT214 router?
THX,
Stef
As far as I know, you can't. The VLAN native should be VLAN1.
-
If vlan native between Trunk ports not configured so what happens?
I have a network where two ports of junction are allowed vlan 9 but not native VLANs configured. will be affect performance?
by default the vlan1 is configure the vlan native to assign a vlan on the interface different native
switchport trunk vlan native xxx
HTH
Richard
-
I have two questions:
(1) 6500 (regardless of the SUP) do not support the standard 802.1ad correct? "QinQ" features are not standard?
(2) can someone help me understand why tagging vlan native is listed as a required step when configuring switchport dot1-tunnel mode?
(http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2S...)
I understand VLANs jump... etc but I do not understand how this relates to the creation of a tunnel port. For me, a tunnel port puts all the data in the provider / S-VLAN defined on the port tunnel with "switchport mode access vlan x" This includes labeled and not marked traffic coming from the CE marking on the port tunnel. I understand best practices for tagging vlan native on the base in general... switches but why the tunnel ports invites and it's necessary?
I'm missing something basic here :)
Thank you!
Hello
AD 2) here is an explanation, I think:
http://www.Cisco.com/c/en/us/TD/docs/switches/Datacenter/SW/5_x/NX-OS/in...
Best regards
Milan
-
Question of VLAN native of UCS
All,
I have a problem that I can not just wrap my mind autour. We have UCS setup in a lab with 2 interconnections connected to 2 nexus switches 5510. The nexus switches are passed to the network via a Switch 4900 m. All circuits are configured and tested as functional. All routing is configured and confirmed. I have a problem in UCS, which is confusing to me. In the lab, I kept the VLAN native to the vlan1. I have the Setup VLAN 2-10 on all switches test and interconnections. I created a service profile that contains 1 network card and placed it in the VLAN 7. I installed Windows 2008 on a blade using this service profile. In the operating system I statically IP'ed the NIC for the schema used in VLAN 7. The OS, I cannot ping another device located in the vlan 7. Also, I can't ping a host on a different VLAN. If I place a check on the VLAN 1 as the vlan native I still cannot ping anything. If I place the audit for vlan native to vlan 7 I can ping hosts in the same vlan, as well as outside of the vlan. So why should I place vlan 7 as the vlan native when all my boxes are set up in the vlan 1 is the vlan native?
Thanks for any help,
Ken
Ken,
When you allow some VLANs on your Service vNIC profile you will need to set the VLAN native. This is because the way you have configured currently you are only "allowing VLAN 15', but you're not marking it. It will work fine for ESX or Linux which allows to assign the dot1q tag to the host. With Windows unless you have specific drivers doing the marking for you, you will need to do it at the level of the vNIC in UCS.
Two ways to see this in action. When you create a service profile in the 'Basic' - not 'Expert' method, you will need to choose a single VLAN for your interfaces. This will treat interfaces about like an "access Port". Conversely, when you use the "Expert mode you select the vNIC as a trunk, in which you" will allow to "all VLAN you acceding them as to, like this is the method you did.»
For a Windows operating system, set the VLAN natively for the VLAN you want to access and you'll be gentle. Unchecking this option button that "VLAN native" is allowing traffic to cross out of UCS on the VLAN native VLAN 1, your network - it is therefore MAC appears on other fabric under VLAN1
Kind regards
Robert
-
Can't change phone IP auto macro smartport vlan native on SG200
We have a few SG200 switches and I try to configure the macros Automatic smartport for the IP phone and IP Phone + Office. Every time I have change the macro and change the VLAN native to what I want (the VLAN voice is OK but not the vlan native, I want desktop computers to connect to), I click on apply, but it automatically changes the VLAN default native VLAN (in our case 1 VLAN). I'm trying to change it to VLAN 2. Any ideas why it won't let me change the VLAN native? I can change the VLAN native on others, such as switches, routers, printers, comments, etc., but not the two above and the desktop as well. These three will not change for some reason any. Thank you!
Hi Brademeyer29,
what you see, unfortunately, this isn't a matter of configuration. This was reported to the engineering team and should be fixed in the next firmware version 1.4.1.
For now, you will have to use the solution as not changing not VLAN native or not use smartport.
Kind regards
Aleksandra
-
What is recommended for the vlan native?
Please let me know if my interpretation of the vlan native is correct. The vlan native exists only on the ports of junction and isn't the only one vlan tagged across this trunk where all other VLANS on that would be labelled. No access port on the switch that do not belong to a vlan will have their traffic included in the vlan native and sent through the trunk unidentified.
I know that the vlan native on a port that has been configured as a trunk by default is vlan 1. What are the best practices and the reasons why the vlan native should be replaced by something other than vlan1?
All access ports belong to a virtual local network even if it is only the vlan 1.
By default the vlan native is also vlan 1, so I can see where you are coming.
Except that you're right, that the vlan native should be replaced with something else on the switch, mainly because by default, all ports are in the vlan 1 and vlan 1 is also used for other things as well.
Make the vlan native one vlan unused example. VLAN 999 is a common one.
There should be no port end assigned in, any SVI (L3 of the interface vlan for it) and you do not need to enable through the trunk or a link.
Jon
-
How to set the vlan native on a virtual machine in vSphere when you use the 1000V?
Using the General switch original vSphere, we put VLAN native by VM by setting the VLAN 0 d.
How do we set VLAN native for a virtual machine, if the virtual computer is connected to a 1000V? I heard that is over, we can use VLAN ID 0?
Same way as you would on any Cisco switch.
Add this command to your profile of uplink port:
switchport trunk vlan native X
Keep in mind there is no VLAN 0. VLAN '0' is just how vmware means the VLAN untagged. There are valid in accordance with the standard 1-4095.
Kind regards
Robert
-
Question SG500 auto voice VLAN VLAN native
I have install SG300 and SG500 switches and using the function of vlan automatic voice by simply changing vlan 100 and using voice of vlan 1 for data and the default value. I normally put the L3 switch and make a porteach access for my IP PBX (vlan 100) and the other to connect to the existing data network (vlan 1). Then I do a static route in default gateway customers to route to vlan 100 and everything works well for most facilities.
On my last install, I decided to try to change the vlan 1 default vlan 10 and go with 10 for data and 100 for the voice. The problem that I ran was that the auto generated on my phone switchports config still serve of vlan 1 vlan native. I am trying to find a way to always use auto vlan and get the vlan native desired without having to make manual configuration changes.
Would this be possible?
Thanks in advance.
Hi Brandon, you must edit the macro of vlan native 1 to vlan 10.
Check out this topic How change the macro
https://supportforums.Cisco.com/thread/2177613
-Tom
Please mark replied messages useful -
New VLAN (wait vlan1 - vlan native) created in 1142N AP does not work
Hello
We have put in place which is having vlan existing (100) in local network set in place and even vlan100 is founded in 1142 N but unfortunately I am not able to connect to the existing local-configuration network
EQ.
New SSID: Name: wireless
VLAN 100:
BVI interface: 10.10.100.2
I have everything configured correctly in PA but I am not able to reach the default gateway which is router.
I can't configure new VLANs map with the same ssid vlan?
only the VLANs native will work fine...
Light on this please...
> The default gateway configuration is present on the AP?
> Whats the switchport configuration? What trunk?
See the race of the AP and then the switch port configuration, then the configuration of the router interface please
You will wait for your update...
Concerning
Surendra
-
Management and Vlan native in different subnet?
Can I have a management ip and vlan native in a different on AIR-1242 switch subnet and 2960?
Native on switch = 1.
The interface vlan 100 = 10.10.1.25X 24
BVI ip to the vlan 100 = 10.10.1.25X 24
-HM-
Hello
As far as I know, the management and the native will be the same... I guess... You have Vlan native as 1 on the switch and Int Vlan 100 on routing switch? Am I wrong? Let me know what are your needs... which will help me to help out you!
for your question...
Normally, we specify him vlan native on the switch and the AP so that communication happens... communication won't happen if there is a match of...
Looking forward to hear from you!
Let me know if that answers your question...
Concerning
Surendra
====
Please do not forget to note positions that answered your question and mark as answer or was useful
Maybe you are looking for
-
I am in Iran and the Iran, no code
Hello I'm in Iran The Iran no code availability of the two factors Please help me I am forget security issue
-
Tried to open Skype but without success.Please help me, thanks in advance.I will provide all the necessary information.
-
If these things are * me off
-
work to replace bad downloaded
I ripped the CD of classical music (Mahler), but the associated work automatically is a picture of Meat Loaf. Somehow I can replace the current peak with something more specific or appropriate? I tried to paste in a best pic following the instruction
-
My pages have suddenly begun to AutoScroll.
My pages have suddenly begun to AutoScroll. I made the virus scan and everything is ok. I have a logitech mk260 mouser of combo and a keyboard, this could be the problem