Hi!
I want to replace some switches with CRS-switches.
Is there any possibility to setup "trunk-ports" wich always hold all VLANs and
- where every new vlan is instantly available tagged
- where every unknown vlan is forwarded to, that enters another trunk-port?
Dell switches e.g. handle VLANs on ports this way, if they are configured with:
switchport mode trunk
Thank you for your help
Stril
Re: CRS - Trunk-Port with all VLANs including those, which are not configured
The answer might depend on which exactly CRS device are we talking? If we're talking about CRS3xx, then the answer is likely: "can be, but not using single command".
The reason being: VLANs on CRS3xx are configured like this:
The problem is, that you can only have one command with combination of bridge=<bridge> vlan-ids=<list of VLAN IDs> ... and if you configure it initially like this:
you can't later on add an access port
as the combination bridge=bridge vlan-ids=666 overlaps the combination bridge=bridge vlan-ids=1-4094 already in use.
Essentially this way you can create a trunk with "wildcard" VLANs, you can even create a few such trunks and switch will forward "wildcard" VLANs between such interfaces, but you can't add an access port later on (or a "non-wildcard" trunk port) ... in that case, you'd have to drop all VLAN config and start to create smaller VLAN chunks to allow that one exceptional port.
The reason being: VLANs on CRS3xx are configured like this:
Code: Select all
/interface bridge vlan
add bridge=bridge vlan-ids=AAA-BBBB tagged=portA
add bridge=bridge vlan-ids=CCC tagged=portA untagged=portB
The problem is, that you can only have one command with combination of bridge=<bridge> vlan-ids=<list of VLAN IDs> ... and if you configure it initially like this:
Code: Select all
add bridge=bridge vlan-ids=1-4094 tagged=ether1
Code: Select all
/interface bridge vlan
add bridge=bridge vlan-ids=666 untagged=ether13
/interface bridge port
add bridge=bridge interface=ether13 ingress-filtering=yes pvid=666
Essentially this way you can create a trunk with "wildcard" VLANs, you can even create a few such trunks and switch will forward "wildcard" VLANs between such interfaces, but you can't add an access port later on (or a "non-wildcard" trunk port) ... in that case, you'd have to drop all VLAN config and start to create smaller VLAN chunks to allow that one exceptional port.
Re: CRS - Trunk-Port with all VLANs including those, which are not configured
Hi!
Yes, it's about the CRS3xx models.
Thank you for your hints. That's not, what I hoped, but maybe scriptable. It would be great to have an option to set a port to mode "contains all VLANs".
Yes, it's about the CRS3xx models.
Thank you for your hints. That's not, what I hoped, but maybe scriptable. It would be great to have an option to set a port to mode "contains all VLANs".