Hi Shyam,
I have no idea what a CISCO WSC456 switch might be, I've never heard of it.
In general: cisco switches can send tagged/untagged frames, but the logic is
quite a bit different.
Let's say you've created three VLANs:
--- snip ---
vlan 10
name vlan-10
vlan 20
name vlan-20
vlan 30
name vlan-30
--- snap ---
You can send one VLAN untagged (In Cisco terms, this is an access port). The
following example sends VLAN 10 untagged
--- snip ---
Interface GigabitEthernet 0/0
switchport mode access
switchport access vlan 10
--- snap ---
You can send many VLANs (they need to be tagged)
--- snip ---
Interface GigabitEthernet 0/0
switchport trunk encapsulation dot1q ! Optional on newer switches, in
early days there was a second option isl
switchport mode trunk ! enable VLAN
tagging. By default, ALL VLANs are sent tagged, except VLAN 1, which is sent
untagged
switchport trunk allowed vlan 10,20 ! only allow VLANs 10 and 20
on the trunk, both are tagged
switchport trunk native vlan 10 ! make VLAN 10 the native
VLAN, which means, VLAN 10 is untagged
--- snap ---
In short:
- access port: send one VLAN, untagged
- trunk port: send many VLANs, all tagged, except the native VLAN
- native VLAN defaults to VLAN 1 which is sent untagged, but can be changed.
For completeness: you can turn of the native VLAN feature using the following
(global config) command:
- vlan dot1q tag native
Now, also the native VLAN is tagged, there are no untagged frames on the wire.
Please be aware that this affects the entire switch, hence all configured
trunks and should only be configured if you know what you're doing, as you'll
probably need to configure the other side as well.
Regards
Daniel
--
Daniel Herrmann
Network Engineer – Fraunhofer Private Cloud
CCIE #55056 (Routing and Switching)
Cisco CCDP, CCIP; Fluke CCTT
On 07.02.18, 10:30, "soundar rajan" <bsoundara...@gmail.com> wrote:
Hi
Could you please let me know the steps for configuring advance network in
CISCO WSC456 switches to support cloudstack in advance mode
I see there is no tagging/untagging concept in CISCO switch
Regards
Shyam
