11-14-2013 06:55 PM - edited 03-07-2019 04:37 PM
Hi Everyone,
On flat layer 2 network we have wall jacks in the meeting rooms.
Sometimes we get request from users for additional Lan connections there.
Then we connect the unmanged Dlink layer 2 switch to the wall jack at the meeting room then say 10 users connect to the Dlink switch and this switch
has connection to the wall jack.
Connection from wall jack goes to the Cisco switch and this cisco switch has this port config
int gi0/1
switchport mode access
switchport access vlan 10
spanning tree portfast
switchport port security
switchport port security max 4
BPDU is enabled globally enabled on this switch.
This switch is VTP client mode.
Now we are replacing the unmanaged switch with the Cisco switch.
This switch will not sit in one place as per user requirement it will be used where ever needed.
So i can config the switch as per our normal config template.
New switch config
I want to manage this switch remotely so i need to assign IP address.
Config the new switch as VTP client and assign the same domain name so it can learn all the vlans right.
I can config the port connecting the new cisco switch to existing switch as trunk port and allow the required vlans on trunk.
This is simple way.
Second Way
Can i config this new switch as vtp transparent mode and manually config the required vlans which are needed?
Is it possible to connect this new switch to existing switch without configuring as trunk port?
i mean is this config possible
switchport access vlan 15
spanning tree portfast
switchport mode access
This way new switch can carry single vlan to existing uplink switch.
Regards
MAhesh
Solved! Go to Solution.
11-14-2013 07:12 PM
Hi Mahesh,
If you are connecting a new switch to your existing switch and if the new switch has only one vlan, you can simply configure the uplink port as an access port. If you have multiple vlans on the new switch, then you need to configure the link between the 2 switches as trunk port. Usually, between switches configure the port as trunk and add the vlan to it. In the feature when you add more vlans, you simply add them to the trunk. If you have limited amount of vlan, you can simply configure the new switch in transparent mode and be done with it. VTP is not needed unless you are dealing with a lots of vlans.
HTH
Reza
11-14-2013 07:30 PM
Mahesh,
I have a strange feeling you need to enable Auto Smart Port (ASP).
Basically, if you plug a client to an ASP-enabled Cisco switch, the switch will immediately default the interface and apply the configuration required.
Not easy but very achievable. You may need to create a Cisco TAC Case for this.
Alternatively, you can deploy wireless.
11-14-2013 07:30 PM
Hi Mahesh,
Yes, it will put the port in errordiable because you have BPDU guard and that usually applies to access ports. You would need to disable it for that port and then configure it as trunk.
HTH
Reza
11-15-2013 01:35 AM
I agree with Reza in that you should configure an access port otherwise you have a trunk port which affectively terminates on a wall jack which is a risk, especially if its a risk you don't need to take.
Leo made a good point though with wireless being an option. To be honest, in my opinion I don't see what companies need lots of wall jacks in meeting rooms. There are unlikely to be any desktop machines in the room, just people bringing in laptops for meetings. Laptops have Wireless NIC's. You could save yourself the risk and hassle of a switch which is 'carried round from room to room' but just sticking a wireless AP in each meeting room.
11-14-2013 07:12 PM
Hi Mahesh,
If you are connecting a new switch to your existing switch and if the new switch has only one vlan, you can simply configure the uplink port as an access port. If you have multiple vlans on the new switch, then you need to configure the link between the 2 switches as trunk port. Usually, between switches configure the port as trunk and add the vlan to it. In the feature when you add more vlans, you simply add them to the trunk. If you have limited amount of vlan, you can simply configure the new switch in transparent mode and be done with it. VTP is not needed unless you are dealing with a lots of vlans.
HTH
Reza
11-14-2013 07:18 PM
Hi Reza,
I can config the uplink port as access port and connect it to existing switch.
But existing switch has BPDUguard enabled globally.
When i connect new switch to existing switch as access port will port not be errdisabled as it now connect to new switch?
Regards
Mahesh
11-14-2013 07:30 PM
Mahesh,
I have a strange feeling you need to enable Auto Smart Port (ASP).
Basically, if you plug a client to an ASP-enabled Cisco switch, the switch will immediately default the interface and apply the configuration required.
Not easy but very achievable. You may need to create a Cisco TAC Case for this.
Alternatively, you can deploy wireless.
11-14-2013 07:30 PM
Hi Mahesh,
Yes, it will put the port in errordiable because you have BPDU guard and that usually applies to access ports. You would need to disable it for that port and then configure it as trunk.
HTH
Reza
11-15-2013 01:35 AM
I agree with Reza in that you should configure an access port otherwise you have a trunk port which affectively terminates on a wall jack which is a risk, especially if its a risk you don't need to take.
Leo made a good point though with wireless being an option. To be honest, in my opinion I don't see what companies need lots of wall jacks in meeting rooms. There are unlikely to be any desktop machines in the room, just people bringing in laptops for meetings. Laptops have Wireless NIC's. You could save yourself the risk and hassle of a switch which is 'carried round from room to room' but just sticking a wireless AP in each meeting room.
11-19-2013 01:01 PM
Hi,
We are also working on to use wi fi as option currently i will configure the port as access port connecting to new switch..
Thanks everyone for their advice.
Best regards
Mahesh
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