Mls rp vtp domain

Hi Experts
i need to know about the redundancy of the vtp domain:mls rp vtp domain name.if i have 2 distribution do i need to do this command on the 2 dis?
10xs for ur reply

Hello,
as I understand it, if your switches both participate in a VTP domain, the command is indeed required on both MLS RP enabled interfaces. The MLS interfaces are part of the VTP domain, just as any other VTP client or server switches.
Regards,
GNT

Similar Messages

Mls rp vtp-domain test

HI
what is the effect of the 2 commands"
int vlan 10
mls rp vtp-domain test
mls rp ip
10xs

Hi
can any some body help on this issue!
i need to configure these command under
the int vlan10
ip address mask
mls rp vtp-domain test
mls rp ip
standby 10 ip 10.10.10.1
standby 10 timers 3 9
standby 10 priority 110
standby 10 preempt
10xs for ur reply

Cat4000-IOS not seen as member of its own vtp domain in CM

Recently we upgraded to CiscoWorks CD 5 V1. Cat4000-IOS devices are now supported in RME and CM. But in CM Topology Services the Cat4000-IOS devices are not seen as members of their own VTP domain. Instead, each access switch behind the Cat4000-IOS forms a single switch cloud (vtp disconnected domain) and no vtp server is found for that domain.
The two Cat4000-IOS serve as VTP servers and HSRP-Gateways for five access switches (Cat4000 with CatOS) connected via dot1q-trunks to each Cat4000-IOS.

I am having the same problem. I followed the link and the document says "A link in a VTP domain is not set to trunk. There are devices in this domain that do not communicate through any trunk." I have checked the devices and they are set up to trunk. In CiscoWorks - topology services, when I run a Logical Discrepancy Report It says the domain is disconnected and it is showing 15 sets. Set one shows my two 6509's, one 4006 & all of the 3524's connected to it. All of the other sets have only one 3524 in each of them. The trunk ports from two of my 4006's to my 6509's are as follows:
interface Port-channel1
description Uplink to C_BCAD_2213_6x_1
switchport
switchport trunk encapsulation isl
switchport mode trunk
no snmp trap link-status
On one of my other 4006's the trunk port is as follows:
interface Port-channel4
switchport
switchport trunk encapsulation isl
switchport mode trunk
description Uplink to C_BCAD_2213_6x_1
no snmp trap link-status
As you can see, they are both set up the same.
Also in Campus Manager, only the 4006 in set 1 & all of the 3524's show up graphically as clients. The two 6509's show up as servers.
All devices are running VTP version 2. The revision number on all devices is the same (10).

Bridging betweteen different vtp domain

Can I bridge same vlan in different switch (2950 -- 3750 -- 2950) since each switch is consist of different vtp domain?
Thanks for any help!

Hi,
Yes, You can bridge on the same vlan between diff switches. If you have diff VTP domain, your VTP advertisements will not travel to the switch with diff VTP domain and you will lose the Vlan consistency on your LAN. Moreover if you want same number of VLANS then you have to define them manually. If you have a trunk between the switches in diff VTP domain, set the trunk to on as the trunk doesnot negotiate between the switches in diff VTP domain and trunk doesnot get established.
HTH,
-amit singh

Vtp domains

we have two vtp domains in our hosp. I have a switch I would like to share between the two. Have some ports vlaned to a network defined on one vtp domain and others to the others to a network on the other vtp domain. This should work right? with the management ip only on one vtp domain network.

That should work OK provided none of the VLANs overlap. Make sure the switch is in VTP transparent and define the VLANs locally on it. Make sure the trunks only allow the VLANs that are relevant to the domain they are talking to. I would also change the VTP domain name so that it matches neither existing name, just for safety.
Kevin Dorrell
Luxembourg

Ciscoworks Topology VTP Domains

Hi
I've tried searching the community, but no luck finding a solution that works for me.
The problem is that I have 2 VTP domains, they both shows up in Topology, VTP Domains. But one of the doesn't show the VTP Transparent devices. The other does. Ciscoworks discover all the devices, bot VTP Domains consists of server/client and transparent. All switches in the VTP domains, are configured with the same values for snmp, user, tacacs and enable secrets. One switching environment has the domainname IDMZ and the other has YDMZ. YDMZ shows all devices under VTP Domain views in Topology, but IDMZ does not. I can see the devices under unconnected device view, and there I see them connected and looking good. The VTP are configured correctly, except transparent for those not showing up under VTP Domains for IDMZ.
Any ideas, what tp look for?
I'm running the latest version of Ciscoworks (4.0).
Br
Geir Sand-Strand

I think I found the problem. The transparent switch had wrong snmp config (v2).
Changed this and now it seems to work.
Geir

VTP Domain question, collapsed Backbone

Hi All,
I have to redesign our network.
Reading lots of books, there are still questions...
Suppose I have a classic collapsed backbone with a Server farm and a access layer for the users.
The server will be in one VLan (= /24 subnet), the users in multiple other VLans.
Are the Server farm and the User Vlans in the same or in diferent VTP Domains?
Is it at all possible to have multiple VTP domains in a collapsed Backbone?
Thanks
Willem

A switch can only be part of one VTP domain at any given time, however, you can have multiple VTP domains in your network. As the previous post states, VTP is used to manage VLANS. So, if you have VTP Domain A, switches that are part of that VTP domain will monitor VLANs associated with VTP Domain A. Switches in VTP Domain B will monitor VLANs associated with VTP domain B.
The main purpose of VTP is to keep you from manually having to configure the same VLANs on a bunch of switches. Depening on the size of your network and how often VLANs change, it may or may not be worth using VTP.
If you do use VTP, be careful if you are changing parameters in a live environment...you can lose all of your VLANs...I've done that before and it wasn't fun.

VTP domain disconnect

Hi All.
I have Cisco LMS 3.2.1 at a Customer site, he was checking discrepancies and received an "VTP disconnect message".
The network has a VTP server which is 6509 switch connected via Trunk to all switches.
Can anyone throw me a direction in which we can look here?

VTP doesn't know propagate advertisements outside the vtp domain. It, rather maintains information consistency between the switches in the same vtp domain through the trunk links.
Configuring different vtp domain is the same as isolating each switch in a domain.
PS:
"You can use VTP to manage VLANs 1 to 1005 in your network. (Note that VTP does not support
VLANs 1025 to 4094.)
When you make a change to the VLAN configuration on a VTP server, the change is propagated to all
switches in the VTP domain. VTP advertisements are transmitted out all trunk connections, including
Inter-Switch Link (ISL), IEEE 802.1Q, IEEE 802.10, and ATM LAN Emulation (LANE).
VTP servers advertise their VLAN configuration to other switches in the same VTP domain and
synchronize their VLAN configuration with other switches based on advertisements received over
trunk links. VTP server is the default mode.
Each switch in the VTP domain sends periodic advertisements out each trunk port to a reserved multicast
address. VTP advertisements are received by neighboring switches (in the same domain), which update their VTP and VLAN
configurations as necessary.
The following global configuration information is distributed in VTP advertisements:
VLAN IDs (ISL and 802.1Q)
Emulated LAN names (for ATM LANE)
802.10 SAID values (FDDI)
VTP domain name
VTP configuration revision number
VLAN configuration, including the maximum transmission unit (MTU) size for each VLAN
Frame format
Please rate if it helps
Regards
M. BEN HASSINE

Vtp domain info in startup????

Cisco sent my client a replacement switch. Event though my client sent the startup config to the new switch it still defaults to Server and has no domain info. Is this because Client mode VTP info is volatile? The startup config of the Server will retain VTP info???????
But the startup of the Client mode will not???????? We are now concerned for our VTP info in the event of hardware failures of disasters. I instructed my client to send a running config to the new switch and see what shakes.

More than likely, you are using a switch like the 2950, 3550, etc. that holds its VTP information in a vlan.dat file. This file is separate from the startup-config file. Just modify the VTP domain name and add the VTP password (you do have one right?). The switch should get vlan information across its trunk ports (assuming the trunks are up and hard-coded on). The VTP mode can be changed before or after this happens.
BTW, since the VTP information is stored in the vlan.dat file, when you erase the startup config and reload the switch, the VTP domain and mode will still be there (until you delete the vlan.dat file and reload).
HTH.
Eugene

Vtp domain

Hi,
would appreciate some advise and clarification on the following:
1) when 2 switches are configured with different vtp domain, but both configured with e.g. vlan 500, they would be able to communicate? should be yes?
2) when one of the switch is updated to the same vtp domain, would it cause downtime to the existing vlan 500 users? should be no?
Thanks,
Christina

when you update switch to the same vtp domain ...it will have configuration revision number 0... so it will syncronise its database from other serverswitch in the topology with the higher revision number ... so updating switch to the vtp domain will not cause any problem...
read the document on the following link:http://www.cisco.com/en/US/products/hw/switches/ps5528/products_configuration_guide_chapter09186a00801e8788.html
it is having good explanation for VTP with configuration
rate this post if it helps
regards
Devang

VTP domain change

Hi,
Our network runs in one VTP domain. All switches are Cat6500 (ISO) sup2 or sup720. All is working in Layer 2.
We are using vlans above 1000 which cannot be propagated by VTP and needs to be configured by hand on every switch. We changed the VTP domain so every 6500 switch was its own VTP domain and then trouble started ... something strange occured. The MAC addresses were not propagated to other switches in vlan (layer 2 only vlan). Putting static entries did not solve the problem. The MAC addresses in the same VLAN were only propagated from access1(VTP access1) to core1(VTP core1),but not to the access2 (VTP access2). Same thing the other way.
On switches that we didnt change vtp, everything worked fine. After couple of hours trying to solve the problem, I changed back to same VTP domain for all switches and MACs starts propagate.
What was cousing this problem ?
Thanks and regards:
Michal

VTP doesn't know propagate advertisements outside the vtp domain. It, rather maintains information consistency between the switches in the same vtp domain through the trunk links.
Configuring different vtp domain is the same as isolating each switch in a domain.
PS:
"You can use VTP to manage VLANs 1 to 1005 in your network. (Note that VTP does not support
VLANs 1025 to 4094.)
When you make a change to the VLAN configuration on a VTP server, the change is propagated to all
switches in the VTP domain. VTP advertisements are transmitted out all trunk connections, including
Inter-Switch Link (ISL), IEEE 802.1Q, IEEE 802.10, and ATM LAN Emulation (LANE).
VTP servers advertise their VLAN configuration to other switches in the same VTP domain and
synchronize their VLAN configuration with other switches based on advertisements received over
trunk links. VTP server is the default mode.
Each switch in the VTP domain sends periodic advertisements out each trunk port to a reserved multicast
address. VTP advertisements are received by neighboring switches (in the same domain), which update their VTP and VLAN
configurations as necessary.
The following global configuration information is distributed in VTP advertisements:
VLAN IDs (ISL and 802.1Q)
Emulated LAN names (for ATM LANE)
802.10 SAID values (FDDI)
VTP domain name
VTP configuration revision number
VLAN configuration, including the maximum transmission unit (MTU) size for each VLAN
Frame format
Please rate if it helps
Regards
M. BEN HASSINE

VTP domain name change

we have a number of campus LANs that for historical reasons, all have the same VTP domain name (even though they are seperate domains).
we'd like to change the domain names so that they are unique throughout the network. is the correct method of acheiving this:-
1 change VTP server to Transparent Mode
2 change VTP domain on 'server' to new domain
3 change all Client switches on campus to Transparent mode and change domain name to new one. change mode back to Client and then restart.
any advice appreciated
thanks
andy

Hi Andy,
I believe you have 2 VTP servers in your network with different VTP domain names and both VTP servers are playing role seperately for their VTP domains? Correct me if I am wrong?
If I am right you can go ahead with your plan and change your one VTP server which you waan sync with your other VTP server to transparent mode and then chage the VTP domain name then change it back to server mode so that you can also have 2 VTP servers in same VTP domain for any emmergency.
Talking about clients you can follow the same procedure as changing from client to transparent, then change the domain name and then back to client and you need not reload your switches.
Also remember while doing all these when you move your one VTP server and clients to different VTP domain name the VLAN information will get override by VLAN information persisting on your other VTP server and if this is what you want just go ahead.
Devang I did not undersood your BPDU stuff in this context can you please throw more light on the same.
Regards,
Ankur

Cannot delete VTP domain on 2950

I want to delete the VTP domain name on my 2950.
Sh VTP Status display :
VTP domain : CACE
VTP mode : transparent
Try to use command line vtp domain "" and having this message
Operation failed; Bad domain name length
What is the way to set a null domain name ?

Hi Friend,
The easiest way is to give it some other domain name which does not exist in your network if you do not want your switch to participate in any VTP domain which exist in your network.
Switch default is in no-management-domain state.
After the switch leaves the no-management-domain state, it can not be configured to re-enter it until you clear the NVRAM and reload the software.
So if you completely want to get rid of it clear NVRAM and reload the software.
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12120ea2/3550cr/cli3.htm#wp1878369
By my recommendation is if you put into any domain which does not exist in your network it is same as no-management-domain state because it will not participate in your existing VTP domains.
HTH, if yes please rate the post.
Ankur

VTP transparent mode and using VTP domain

                   Hi all,
Need to ask question when using VTP transparent mode is it good idea to use VTP domain name and password?
I know for switches in transparent mode they act as independent of each other.
So need to know why we should use vtp domain and password with transparent mode?
thanks
mahesh

Mahesh,
I know this 2 years later, but it will help others who will come across this. If you have a Transparent switch mixed with Server and Clients switches. This is your concern....... If you do not put the Transparent switch in the same domain, then it will not forward VLAN changes to other swithces.
So Sw1(Server-CCIE Domain) <-------> Sw2(Transparent-CCIE Domain)  <-------> Sw3(Client-CCIE Domain)
The above will work because the Transparent switch is in the same domain. This means that SW3 will get any Vlan changes that are done on SW1.
Now lets look at it the other way.........
Sw1(Server-CCIE Domain) <-------> Sw2(Transparent-Null Domain)  <-------> Sw3(Client-CCIE Domain)
Two things are going to happen here
1) The transparent switch is not on same domain, so SW3 will never get any updates when changes to Vlans are done on SW1. So if I add one vlan to SW1, and that make the Configuration Revision increase to the value of 10, that means SW3's Revision will still be 9, and will remain that way until the issue is corrected.
2) If you are dynamically negotiating trunks, this will never happen due to the mismatch domains. Meaning that your trunks will never come up because you did not put your Transparent switch in the same domain.
Kiel Martin

VTP Domain Name and Transparent Mode

Can two switches connect via a trunk, one as a server and one as transparent and be in two different VTP domains respectively?

Hi Guys,
For the error messgae below:
Error Message DTP-5-DOMAINMISMATCH: Unable to perform trunk negotiation on port
[chars] because of VTP domain mismatch.
This you will got only when you have an automatic trunk negotiation using the DTP (dynamic trunking protocol) between the switches. The switches with different VTP domain name will not negotiate a trunk and a trunk will not form. But if you configure a trunk manually (not using DTP) then the trunk will work.
HTH, Please rate if this helps
-amit singh.

Mls rp vtp domain

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