53
A P P E N D I X
C
SRP Conventions
When the Sun OC48 Packet Over Sonet Adapters are used for SRP mode, each SRP
node consists or two adapters. One of the adapters is named Primary, or Side A, the
other one is named Mate (Side B). The Primary adapter is always connected to the
Mate adapter of its neighbor node. The Mate adapter is always connected to the
Primary adapter of its neighbor node. The two adapters (Primary and Mate) are
connected together by the SRP Data Cable.
illustrates an SRP node.
FIGURE C-1
SRP Node
In normal operation, the host can post packets to either the Primary or the Mate
card, depending on the Topology. When the host needs to sends a packet from the
Outer ring (as illustrated in
), the host posts the packet to the Primary
Adapter (Side A), the Primary Adapter will then forward the packet to the Mate
Adapter and the Mate Adapter will then send the packet out to the Outer Tx fiber.
Primary
Mate
Sun OC48
POS Card
Sun OC48
POS Card
SRP
Data
Outer Tx
Outer Rx
To
Side A
of
Node
To
Side B
of
neighbor
Node
(Side A)
(Side B)
SRP Node
Inner Tx
Inner Rx
Cable
neighbor
Summary of Contents for APOLLO OC48
Page 6: ...vi Sun OC48 Packet Over Sonet Adapter Installation and User s Guide December 2001...
Page 8: ...viii Sun OC48 Packet Over Sonet PCI Adapter Installation and User s Guide December 2001...
Page 12: ...xii Sun OC48 Packet Over Sonet Adapter Installation and User s Guide December 2001...
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