Vlan Description; Displaying Vlan Information; Tab. 8.1 Advantages And Disadvantages Of Tagged Vlan - Siemens S223 User Manual

User Manual
SURPASS hiD 6615 S223/S323 R1.5
8.1.6
8.1.7
A50010-Y3-C150-2-7619
Advantages
VLAN association rules only need to be applied
once.
Only edge switches need to know the VLAN as-
sociation rules.
Core switches can get higher performance by
operating on an explicit VLAN identifier.
VLAN-aware end stations can further reduce the
performance load of edge switches.
Advantages and Disadvantages of Tagged VLAN
Tab. 8.1
Mapping Frames to VLAN
From the perspective the VLAN-aware devices, the distinguishing characteristic of a
VLAN is the means used to map a given frame to that VLAN. In the case of tagged frame,
the mapping is simple – the tag contains the VLAN identifier for the frame, and the frame
is assumed to belong to the indicated VLAN. That's all there is to it.
To configure the tagged VLAN, use the following command.
Command
vlan add VLANS PORTS tagged

VLAN Description

You can describe each VLAN with the following command
Command
vlan description VLANS DESC
no vlan description VLANS

Displaying VLAN Information

User can display the VLAN information about Port based VLAN, Protocol based VLAN
and QinQ.
Command
show vlan
show vlan VLANS
show vlan description
show vlan dot1q-tunnel
show vlan protocol
Tags can only be interpreted by VLAN aware devices.
Edge switches must strip tags before forwarding
frames to legacy devices or VLAN-unaware domains.
Insertion or removal of a tag requires recalculation of
the FCS, possibly compromising frame integrity.
Tag insertion may increase the length of a frame be-
yond the maximum allowed by legacy equipment.
Mode
Configures tagged VLAN on a port:
Bridge VLANS: enter the VLAN ID.
PORTS: enter the port number
Mode
Describes VLAN characteristic:
VLANS: enter the VLAN ID.
Bridge
DESC: enter the detail description
Deletes the description about specified VLAN ID.
Mode
Shows all VLAN configurations.
Shows a configuration for specific VLAN.
Enable
Global Shows a description for specific VLAN.
Bridge
Shows QinQ configuration.
Shows VLAN based on protocol.
UMN:CLI
Disadvantages
Description
Description
Description
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