When VLANs are not used (
Figure 4.44
), user data and management data are not separated
either logically, or physically.
When using VLANs (
Figure
4
.
45
), it is necessary to use external switches (Switch 3 and Switch 4).
These switches add/remove VLAN tags per port basis. Thus, management data and user data have
different VLAN tags and are logically separated.
Ext. switch 2
Int. switch 1
CPU 1
Int. switch 2
CPU 2
CFIP1
CFIP2
User
dat
a
MM
dat
a
Port 1
Port 2
Port 3
Mng
LAN 1,2
WAN
WAN
Ext. switch 1
User
dat
a
MM
dat
a
Port 3
Port 1
Port 2
LAN 1,2
Mng
Ext. switch 4
User
dat
a
MM
dat
a
Port 1
Port 2
Port 3
Ext. switch 3
User
dat
a
MM
dat
a
Port 3
Port 1
Port 2
Figure 4.45
System with VLANs
System with two separate VLANs – A and B
.
Figure 4.46.
represents ports membership to VLANs.
Ext. switch 2
Int. switch 1
CPU 1
Int. switch 2
CPU 2
CFIP1
CFIP2
User
dat
a
MM
dat
a
Port 1
Port 2
Port 3
Mng
LAN 1,2
WAN
WAN
Ext. switch 1
User
dat
a
MM
dat
a
Port 3
Port 1
Port 2
LAN 1,2
Mng
Ext. switch 4
User
dat
a
MM
dat
a
Port 1
Port 2
Port 3
Ext. switch 3
User
dat
a
MM
dat
a
Port 3
Port 1
Port 2
VLAN B
VLAN A&B
VLAN B
VLAN B
VLAN B
VLAN A
VLAN A
VLAN A&B
VLAN B
VLAN A
VLAN B
VLAN A
Figure 4.46
VLANs and ports membership
LAN and WAN ports of Int. switch 1 and switch 2 are sending data according to VLAN ID and
destination address, and adding VLAN tags for packets outgoing from Mng port. Additionally, VLAN
tag is removed at Mng port of Switch 1 and Switch 2.
VLAN A is the Trunk type VLAN with LAN & WAN port membership.
VLAN B is the Management type VLAN with LAN & WAN & Mng membership.
CFIP PhoeniX Series TDM/IP Split Mount System Technical Description and Configuration Guide
•
Rev. 1.13
•
© SAF Tehnika JSC 2015
70
