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Results tagged with trunk
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user 619
For questions about trunks, layer-2 links across which traffic for multiple VLANs travel.
3
votes
What VLAN to set as trunk's native VLAN
A trunk's native vlan is the vlan to which untagged traffic belongs. switchport access applies only to ports in access mode -- while in trunk mode, those commands do nothing at all. … You could leave it at "1" and not allow "1" on the port (switchport trunk allowed vlan) …
- 32.6k
2
votes
Accepted
How to add Giga and SFP ports as LACP trunk members
Quoting the user manual:
SFP and 1000M port in TL-SL2210WEB/TL-SL2218WEB/TL-SL2428WEB/TL-SL2452WEB, is not able to be the Trunk member. (From Section 5.3.5 Port Trunking, p.57) …
- 32.6k
3
votes
IOS. Whats the difference between these 2 commands
Once the port is configured as a trunk, any access configuration statements are meaningless. … (usually "1") "switchport trunk allowed vlan remove 2-4094" removes all vlans from the trunk port. If the switch default vlan is not "1", the port will carry no traffic. …
- 32.6k
2
votes
How to create EtherChannel / Link aggregation between two HP switches - on dissimilar port s...
LACP does not support mismatched port speeds. And it wouldn't help if it did. Ethernet is not a reliable transport - it does not detect or care about drops, so even with two paths, a frame that gets l …
- 32.6k
4
votes
Accepted
hp procurve trunk port group operation vs active lacp port group
xa-eng(config)# trunk 1-2 trk17
trunk Do not use any protocol to create or maintain the trunk.
lacp Use IEEE 802.1ad Link Aggregation protocol.
<cr> …
- 32.6k
1
vote
Accepted
Alcatel Lucent with Cisco Router
Port 1/3 is part of VLAN 300. VLAN 300 is 10.0.110.x, not 100.
- 32.6k
4
votes
Accepted
How do you drop (or ignore or filter) all untagged traffic on an 802.1q trunk port?
On a Cisco switch, this is done by selecting a native VLAN that is not allowed on the trunk / port.
switchport trunk native vlan 1 ! … (normal default)
switchport trunk allowed vlan 100-199
So long as the native vlan is not on the "allow" list, it will be dropped. …
- 32.6k
0
votes
Communication between different VLANs
In simple terms... the only way two VLANs can pass traffic -- without a router (layer-3) -- is if someone has done something stupid.
If you connect a VLAN 2 access port to a VLAN 3 access port - and …
- 32.6k