1
vote
0answers
1k views

Is it possible to mix jumbo frames VLAN and standard mtu VLAN on the same switch port?

If a managed switch and all attached devices both support VLANs and Jumbo Frames, is it possible to mix VLANs with jumbo frames and VLANs with standard frames on the same switch port / ethernet card? ...
3
votes
2answers
2k views

How do I dynamically obtain IP addresses for VLAN interfaces?

I have an Ubuntu machine on which I have created four VLANs, namely eth0.100 ,eth0.200 , eth0.300 and eth0.400. I want to dynamically obtain the IP addresses using the DHCP server. It should provide ...
3
votes
1answer
599 views

Cisco IOS VLAN settings for Dell iDrac with shared interface

We have a few Dell servers with iDrac express, and we would like to start using the iDrac features. Our network is separated into a few VLANs for our different subnets. Our management subnet is on ...
1
vote
3answers
603 views

Any program to help me check whether an ethernet channel can support full-length VLAN packet?

Sometimes, I have to face such a situation that I need to quickly and explicitly know whether a full length VLAN packet can traverse between two RJ45 ports. Yes, I mean 802.1Q ethernet frame with ...
4
votes
1answer
172 views

Does using VLANs in your network infrastructure cause an appreciable decrease in performance?

This is something I've never considered before and wanted the opinions of the experts. We use VLANs day in and day out for various network tasks. My modus operandi is that in general, if something ...
1
vote
1answer
162 views

Which cloud services allow layer 2 link level connections between servers?

There are advantages when you can deploy one server A so that it serves as the IP gateway for machines B, C, and D. In a real machine room, for example, A can balance incoming customer connections by ...
45
votes
2answers
27k views

How do VLANs work?

What are VLANs? What problems do they solve? I'm helping a friend learn basic networking, as he's just become the sole sysadmin at a small company. I've been pointing him at various questions/answers ...
3
votes
2answers
1k views

Preventing packet storm on VLAN

I've got a connection in a datacenter where the network provider gives me two Ethernet connections. They're supposedly hooked up to the same VLAN, such that I can wire them up to my switch and only ...