‎Dynamic VLAN Creation-Registration / GVRP utilization

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nicanor.junior

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20 years ago

nicanor.junior

13 Posts

91583

April 30th, 2006 12:00

Dynamic VLAN Creation-Registration / GVRP utilization

Dear Sirs,

We in doubt about Dynamic VLAN Creation-Registration/GVRP utilization.

We have a Power Connect 6024F and some PC 5224/5324 and we've distributed VLAN port-based across these switches. Reading articles about 802.1Q, specially about Dynamic VLAN creation, I've understood that it's possible to connect hosts to any port on the mentioned switches and these hosts would do part of the VLAN configured on it GVRP-aware NIC automaticaly.

Well, we have a NIC with GVRP-aware based and we've configured the VLAN field to, for instance, 10. We've imagined that, in somewhere in the PC switch, would appear VLAN 10 Dynamically created and a host associated. If we changed the port where host was connected it would still doing part on VLAN 10 but it doesn't occur.

Sorry! My english isn't good...

Any help will be appreciated,

Name : Nicanor Junior / IT Technician / TV Globo Network Television
E-mail : nicanor.junior@globo.com
From : Rio de Janeiro - Brazil

DC
DELL-Cuong N.
1017 Posts
2304
0
Posted May 2nd, 2006 18:00

Did you enable GVRP on the 6024? Earlier I discussed GVRP on this thread. Perhaps the information there would help you.

http://forums.us.dell.com/supportforums/board/message?board.id=pc_managed&message.id=6178

Cuong.
NJ
nicanor.junior
13 Posts
2304
0
Posted May 3rd, 2006 03:00

Yes I did. I'll clear the switch settings and configure it again. Perhaps I'm doing something wrong.

Thanks!
DC
DELL-Cuong N.
1017 Posts
2311
0
Posted May 3rd, 2006 18:00

I'm not exactly sure what you mean, but if you are asking if you can enable GVRP only on one switch and expects somehow that it will learn VLANs from another switch that's not running GVRP, then the answer is no.

GVRP is a protocol and therefore requires that all participants must also be running the same protocol in order to operate correctly.

Cuong.
NJ
nicanor.junior
13 Posts
2311
0
Posted May 3rd, 2006 18:00
Dear Coung,

Is it possible to apply Dynamic Vlan Creation/Registration using only one switch like 5324 or 6024F?

Thanks!

Nicanor Júnior
NJ
nicanor.junior
13 Posts
2311
0
Posted May 3rd, 2006 21:00

I'm expecting somehow that it will learn VLANs from itself running GVRP. In this case I have only one switch. Is it possible?

I did a trunk between two ports on the same switch ( port G1 and G2 of PC 6024F ) and I assigned to these ports VLAN 100. Then I connected two hosts ( with 802.1q NIC properly configured and VLAN 100 assigned to it ) to ports, for instance, 17 and 18 respectively on 6024F. At monitoring terminal nothing occurred and I can't ping each other.

Thanks once again,

Nicanor Junior
DC
DELL-Cuong N.
1017 Posts
2311
0
Posted May 4th, 2006 19:00

This is a very strange setup and I don't think it will work. If you created a loop like this then you basically caused a bridging loop on the switch which will cause STP (spanning-tree) to disable one of these ports so probably only one of those trunk ports is actually active.

Now why are you doing this? If you just want to connect two hosts to two ports on the switch and have them talk to each others they can already through normal switching. Why are you creating a networking loop using the two Gigabit ports?

So let's say you don't connect those trunk ports at all. Now if you have the two hosts on the two ports (17 & 18) and if those NICs are on VLAN 100 then you can configure the two ports to VLAN 100 and they will be able to pass traffic between the two hosts.

Note that if the NIC supports GVRP and you enable GVRP on the switch it should also work. You do not need to configure that strange loop with the two gigabit ports. The NIC & switch will use GVRP to communicate the VLAN config with each others. Please also review the discussion of GVRP at this discussion thread: http://forums.us.dell.com/supportforums/board/message?board.id=pc_managed&message.id=6178

Cuong.

Message Edited by DELL-Cuong N. on 05-04-200604:11 PM
NJ
nicanor.junior
13 Posts
2311
0
Posted May 6th, 2006 01:00

Dear Coung,

Thanks for your patience...

I've reviewed the discussion about GVRP once more. Now I've understood and applied GVRP perfectly. VLANs were Dynamicly created on two PC5324 from 6024F trunk ports. But there's only one thing that doesn't work.

My scenario is as shown bellow:

                              | core switch |
         | 5324 |g10<---->g10|    6024F    |g20<---->g20| 5324 |
         /                                                       \
| HOST A |                                                         | HOST B |

- On core switch (trunked g10/g20, VLAN 100 assignet to both ports, GVRP and STP enabled)

- On both PC5324 (uplink ports g10 and g20 trunked, GVRP and STP enabled)

- On HOST-A and HOST-B I've assigned VLAN 100 and assigned an IP address, both in the same subnet. The NICs installed on the hosts are both an "Intel Pro 100+ Management Adapter".

Ok! VLAN 100 was created on both PC5324 dynamicly when I connected its uplink ports to core switch, but hosts can't communicate each other by ping yet. I've used "Ethereal sniffer software" in a mirror port to monitor the traffic and I've got three important data:

- 802.1Q protocol flooding from HOST, STP and GVRP.
- Into 802.1Q I've could see VLAN ID 100.

I've got all packets from both PC5324 when hosts was traing to ping each other.

Once more any help will be appreciated,

Name : Nicanor Junior / IT Technician / TV Globo Network Television
E-mail : nicanor.junior@globo.com
From   : Rio de Janeiro - Brazil
DC
DELL-Cuong N.
1017 Posts
2311
0
Posted May 8th, 2006 10:00

Please post the configuration for both of the 5324 and for the 6024. Also on your NICs, are you configuring the NICs to send VLAN tag or untag traffic? Please give the config of the NICs including IP/Mask & Gateway IP.

Cuong.
NJ
nicanor.junior
13 Posts
211
0
Posted May 11th, 2006 22:00

Dear Coung,

Here is my full configuration:

########### Configs on 6024F ( core switch ) ###########

6024F(config-vlan)# vlan 100
6024F(config-vlan)# exit
6024F(config)# int ether g17
6024F(config-if)# switchport mode trunk
6024F(config-if)# switchport trunk allowed vlan add 100
6024F(config-if)# gvrp enable
6024F(config-if)# exit

6024F(config)# int ether g18
6024F(config-if)# switchport mode trunk
6024F(config-if)# switchport trunk allowed vlan add 100
6024F(config-if)# gvrp enable
6024F(config-if)# exit

########### Configs on 5324s ###########

Swtich A - Rede A(config)# int ether g1
Swtich A - Rede A(config)# switchport mode trunk
Swtich A - Rede A(config)# gvrp enable

----> Uplink port

Swtich A - Rede A(config)# int ether g10
Swtich A - Rede A(config)# switchport mode trunk
Swtich A - Rede A(config)# gvrp enable

- Message from terminal when I connect PC to port G1: 11-May-2006 01:05:29 %VLAN-I-GVRPAddPort: Dynamic port g1 was added to VLAN 100 by GVRP

Web interface->Dynamic Addresses Table

4   VLAN 100 0002b3yyyyyy g10
5   VLAN 100 0002b3xxxxxx g1

<------------------------------------------------------------->

Swtich B - Rede B(config)# int ether g1
Swtich B - Rede B(config)# switchport mode trunk
Swtich B - Rede B(config)# gvrp enable

----> Uplink port

Swtich B - Rede B(config)# int ether g10
Swtich B - Rede B(config)# switchport mode trunk
Swtich B - Rede B(config)# gvrp enable

- Message from terminal when I connect PC to port G1: 11-May-2006 01:05:29 %VLAN-I-GVRPAddPort: Dynamic port g1 was added to VLAN 100 by GVRP

Web interface->Dynamic Addresses Table

5   VLAN 100 0002b3yyyyyy g1
6   VLAN 100 0002b3xxxxxx g10


########### Configs on Intel PRO 100+ ###########

Host connected to Switch A:

- VLAN ID                                = 100
- GVRP                                 = enable
- 802.1p QoS packet tagging = enable
- Ip addr                                  = 192.168.0.80
- Netmask                               = 255.255.255.0
- Gateway                               = no gateway

- Connected to port g1

Host connected to Switch B:

- VLAN ID                                = 100
- GVRP                                 = enable
- 802.1p QoS packet tagging = enable
- Ip addr                                  = 192.168.0.81
- Netmask                               = 255.255.255.0
- Gateway                                = no gateway
- Connected to port g1

<--------------------------------------------------------------->

Thanks,

Nicanor Jr.
NJ
nicanor.junior
13 Posts
2311
0
Posted May 11th, 2006 22:00

Dear Coung,

Here is my full configuration:

########### Configs on 6024F ( core switch ) ###########

6024F(config-vlan)# vlan 100
6024F(config-vlan)# exit
6024F(config)# int ether g17
6024F(config-if)# switchport mode trunk
6024F(config-if)# switchport trunk allowed vlan add 100
6024F(config-if)# gvrp enable
6024F(config-if)# exit

6024F(config)# int ether g18
6024F(config-if)# switchport mode trunk
6024F(config-if)# switchport trunk allowed vlan add 100
6024F(config-if)# gvrp enable
6024F(config-if)# exit

########### Configs on 5324s ###########

Swtich A - Rede A(config)# int ether g1
Swtich A - Rede A(config)# switchport mode trunk
Swtich A - Rede A(config)# gvrp enable

----> Uplink port

Swtich A - Rede A(config)# int ether g10
Swtich A - Rede A(config)# switchport mode trunk
Swtich A - Rede A(config)# gvrp enable

- Message from terminal when I connect PC to port G1: 11-May-2006 01:05:29 %VLAN-I-GVRPAddPort: Dynamic port g1 was added to

VLAN 100 by GVRP

Web interface->Dynamic Addresses Table

4   VLAN 100 0002b3yyyyyy g10
5   VLAN 100 0002b3xxxxxx g1

<------------------------------------------------------------->

Swtich B - Rede B(config)# int ether g1
Swtich B - Rede B(config)# switchport mode trunk
Swtich B - Rede B(config)# gvrp enable

----> Uplink port

Swtich B - Rede B(config)# int ether g10
Swtich B - Rede B(config)# switchport mode trunk
Swtich B - Rede B(config)# gvrp enable

- Message from terminal when I connect PC to port G1: 11-May-2006 01:05:29 %VLAN-I-GVRPAddPort: Dynamic port g1 was added to

VLAN 100 by GVRP

Web interface->Dynamic Addresses Table

5   VLAN 100 0002b3yyyyyy g1
6   VLAN 100 0002b3xxxxxx g10


########### Configs on Intel PRO 100+ ###########

Host connected to Switch A:

- VLAN ID = 100
- GVRP    = enable
- 802.1p QoS packet tagging = enable
- Ip addr = 192.168.0.80
- Netmask = 255.255.255.0
- Gateway = no gateway

- Connected to port g1

Host connected to Switch B:

- VLAN ID                    = 100
- GVRP                  = enable
- 802.1p QoS packet tagging = enable
- Ip addr = 192.168.0.81
- Netmask = 255.255.255.0
- Gateway = no gateway
- Connected to port g1

<--------------------------------------------------------------->

Thanks,

Nicanor Jr.

Dynamic VLAN Creation-Registration / GVRP utilization

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