The user channel LEDs are hardware controlled similar to Local Management Port (LMP). Provisioning is not
required to enable user channel. Autonegoaon adversement for user channel ports is 10 Mb full/half and
MDIX occurs during autonegoaon. User channel supports IP MTU of a maximum value of 1500 bytes.
The following gure shows an example of user channel between ROADM and ROADM Ethernet connecons.
ILA ILA
ILA ILA
ROADM
E2
E1
E2
E1
E2
E1
E2
E1
USER
2
USER
1
USER
1
USER
2
USER
1
USER
2
USER
(DEG-1)
USER
(DEG-4)
USER
(DEG-3)
USER
(DEG-2)
USER
(DEG-2)
USER
(DEG-1)
User Channel
of OSC Signal
2DEG
ROADM
Express
4DEG
ROADM
• All the traffic on user channel is untagged.
• IP Connectivity is available among all sites over user channel.
FNC000897_Rev_01
Figure 12
User Channel between ROADM and ROADM Ethernet Connecons
System Description and Engineering
ROADM Features
40
Release 19.1.1 · Issue 1.1, May 2021
Fujitsu and Fujitsu Customer Use Only