Esrp Ring Protection; Figure 3-4 The Rules For Switch Role Conversion - Zte ZXR10 5900E Product Description

ZXR10 5900E Product Description

Figure 3-4 The Rules for Switch Role Conversion

Delete from
cluster
Destined for
command switch
3.2.2

ESRP Ring Protection

ESRP (Ethernet Smart Ring Protocol) is based on ITU G.8032 protocol. ESRP detects
whether the ring is connected and guarantees there is only one logically connected path
between any two nodes on the ring. It re-sets port state as blocked or forwarding based
on ring changes (connected -> broken, broken -> connected) to quickly switch the logic
path.
ESRP is suitable for multiple rings and multiple domains. Multiple rings are referred to in
terms of network topology layers. Each layer is a ring. There are two access points on
lower layer access ring to connect with higher layer access ring. The network topology is
considered as an individual ring. A ring tangent with it is not a part of it but a part of
another. The ring on the higher layer is called the main ring. Others are access rings.
Multiple domains indicate there are multiple protecting instances on one ring which are
suitable for different service VLAN. They have different logic paths and are independent
from each other.
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Member switch
Join
cluter
Candidate
switch
Destined for
candidaate
switch(no member)
Command swtich
Destined for
independent switch
Destined for
candidate switch
Destined for
independent switch
Destined for
independent
switch(no member)
Destined for command switch
Independent
switch
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