Description
VLANs are simply a way of grouping a set of switch ports together so that they form a logical
network, separate from any other such group. Within a single switch this is straightforward local
configuration. When the VLAN extends over more than one switch, the inter-switch links have to
become trunks, on which packets are tagged to indicate which VLAN they belong to.
You can use MikroTik RouterOS (as well as Cisco IOS and Linux) to mark these packets as well as
to accept and route marked ones.
As VLAN works on OSI Layer 2, it can be used just as any other network interface without any
restrictions. And VLAN successfully passes through Ethernet bridges (for MikroTik RouterOS
bridges you should set forward-protocols to ip, arp and other; for other bridges there should be
analogical settings).
You can also transport VLANs over wireless links and put multiple VLAN interfaces on a single
wireless interface. Note that as VLAN is not a full tunnel protocol (i.e., it does not have additional
fields to transport MAC addresses of sender and recipient), the same limitation applies to bridging
over VLAN as to bridging plain wireless interfaces. In other words, while wireless clients may
participate in VLANs put on wireless interfaces, it is not possible to have VLAN put on a wireless
interface in station mode bridged with any other interface.
Currently supported Ethernet interfaces
This is a list of network interfaces on which VLAN was tested and worked. Note that there might be
many other interfaces that support VLAN, but they just were not checked.
•
Realtek 8139
•
Intel PRO/100
•
Intel PRO1000 server adapter
•
National Semiconductor DP83816 based cards (RouterBOARD200 onboard Ethernet,
RouterBOARD 24 card)
•
National Semiconductor DP83815 (Soekris onboard Ethernet)
•
VIA VT6105M based cards (RouterBOARD 44 card)
•
VIA VT6105
•
VIA VT6102 (VIA EPIA onboard Ethernet)
This is a list of network interfaces on which VLAN was tested and worked, but WITHOUT
LARGE PACKET (>1496 bytes) SUPPORT:
•
3Com 3c59x PCI
•
DEC 21140 (tulip)
Additional Documents
•
http://www.csd.uwo.ca/courses/CS457a/reports/handin/jpbojtos/A2/trunking.htm
•
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/dtbridge.htm#xtocid114533
Page 357 of 695
Copyright 1999-2007, MikroTik. All rights reserved. Mikrotik, RouterOS and RouterBOARD are trademarks of Mikrotikls SIA.
Other trademarks and registred trademarks mentioned herein are properties of their respective owners.
Содержание RouterOS v2.9
Страница 1: ...MikroTik RouterOS v2 9 Reference Manual ...