Figure 5-43 Zess Network Topology - Zte ZXR10 2900E series Configuration Manual

Figure 5-43 ZESS Network Topology

Here is a description of the ZESS operating flow:
1. In the initial state, both the primary link and the secondary link operate properly. Then
ZESS blocks the secondary link and uses the primary link for data forwarding.
2. When the primary link is disconnected, ZESS rapidly switches the secondary link to
Forwarding state and blocks the primary link.
3. When the primary link recovers from disconnection, if reversal mode is enabled,
ZESS will set the primary link to Forwarding state and blocks the secondary link; if
non-reversal mode is enabled, ZESS will block the primary link and continues to use
the secondary link for data transmission.
Note:
In reversal mode, when the primary link recovers from disconnection, the link is not
switched immediately but after a period of the preup time.
Configuring ZESS
The ZESS configuration includes the following commands:
Step
1
SJ-20130731155059-002|2013-11-27 (R1.0)
Command
set zess domain <1-4>
ZXR10(config)#
protect-instance <1-16> primary {port
<port-name>| trunk <trunk-name>} secondary
{port <port-name>| trunk <trunk-name>}
Chapter 5 Service Configuration
Function
Creates a ZESS domain.
The control VLAN must be elected from
idle VLANs. It cannot have any conflict with
service VLANs or Network Management
VLANs.
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