Bosch DICENTIS Configuration Manual page 21

DICENTIS
Requirement
Warning: IEEE802.1p is also used for QoS, but is limited to layer 2. Since OMNEO uses IP
communication, this mechanism is not suitable, so make sure the used equipment uses
DiffServ QoS!
The table below gives an overview of the used DSCP values which need to be configured in
the switch:
Data
PTP sync,
delay req
PTP follow-
up, delay
response,
audio
(reserved)
Control
Warning: Please check thoroughly if your switch's highest priority queue is label as #1 or e.g.
#8, because this may differ per brand. Unfortunately this is not consistent over the different
brands. Setting it wrong is worse than not having priority.
Switches must be configured to support DiffServ (DSCP) quality of service The switch needs
to have 4 priority queues for the DiffServ mechanism to work.
Warning: Never use VOIP QoS settings!
Requirement
MAC table >1000
Disable EEE
Disable RSTP (when
no cable loops are
used)
Bosch Security Systems B.V.
Standard
DSCP dec DSCP hex
56 0x38
46 0x2E
8 0x08
0 0x00
Standard Settings
n.a. To avoid the switch starts broadcasting unicast
packets because it runs out of space.
IEEE 802.3az Most implementations of EEE cause problems
because of implementation flaws. A good
implementation should work, but does not save
energy since the PTP synchronization avoids this.
Therefore, EEE (green or low power Ethernet) must
always be disabled.
Rapid Spanning Tree Protocol (RSTP) is required
when (cable) loops are created for redundancy. When
no loops are created, RSTP needs to be disabled for
optimal operation. When enabled, it can cause slow
connections to the switch.
Configuration manual
Settings
which is part of the Type of Services field (ToS) in
the IP header. For more details on
header, see Wikipedia.
DSCP Label TOS byte
(hex)
CS7 0xE0
EF 0xB8
CS1 0x20
Best effort 0x00
System overview | en 21
DiffServ & IP
Switch
Priority
queue
Highest
High
Low
None
2021.06 | V3.7 |