ZXR10 2900E Series Configuration Guide
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Edge Node: The node connects with more than 2 levels in ZESR ring is called edge
node. The edge node can be transmission node (contains 2 ports), master node
(contains 2 ports) or assistant port (contains 1 port).
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Assistant Node: The assistant port is also edge port. It is the transmission node that
has only one port in the relative segment. It mainly assists the master node to achieve
service switching for the segment. As shown in “ZESR Multi-ring Multi-domain Design
Figure”, major ring is composed of S1, S2, S3 and S4. Of which S1 is master node,
others are transmission node. Level 1 segment 1 is composed of S3, S4, S5 and S6.
Of which S3 and S4 are assistant nodes, S5 is master node, S6 is transmission node.
Level 1 segment 2 is composed of S3, S4 and S7. Of which S3 and S4 are assistant
nodes, S7 is master node.
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Smart-link node: The smart-link is a simple expansion for the former ZESR function
and realizes the protection for key service link. As shown in “SMART-LINK”, when
the link goes wrong, it can switch automatically and carry out malfunction response in
time.
Introduction to ZESR Function
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Single-Ring Single-Domain ZESR
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ZESR Domain
ZESR domain is an example of ZESR protocol. It is in an Ethernet ring and
consists of master node, transit node and control VLAN.
Figure 4-33 ZESR running state when the ring is “complete state”
As shown in
Figure 4-33
, each node is ZXR10 2900E switch. All the nodes form
a ring. The MASTER switch is the master node. ZESR Domain sets a control
VLAN composed of all the ports in the ring. The protected VLAN must contain
all the above ports. ZESR Domain sets a master and multi transit nodes. Each
node connects with the ring with two ports: primary port and secondary port.
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SJ-20120409144109-002|2012-07-02(R1.0)
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