Alcatel Carrier Internetworking Solutions 6624 User Manual

OS6600 IPC Communication

page -58

OmniSwitch Troubleshooting Guide

IPC software interface is unchanged. IPC provides the following services:

• NI-NI communication

• CMM-NI communication

• CMM is the primary or active

• CMM-CMM communication

• Each element in a stack is addressable from its CMM perspective. Different Types of Sockets are:

• Connection oriented socket

• Connectionless socket

• Multicast socket

• IPC is transported as a layer 2 protocol over Ethernet frame

• Provides Segmentation and Reassembly

• Fragment packet bigger than 1400 bytes

• Provides reliability

• Interface with Stack Manager to obtain MAC address and outgoing port number

• Use special MAC to identify IPC packet

• For all slots a Special MAC is used. Example: slot 7 uses 00:00:77:77:77:77, slot 8 uses 

00:00:88:88:88:88

The following diagram can illustrate IPC connection between different slots:

Slot 1 

Slot 2 

Slot 3 

Slot 4 

Slot 5 

00:00:11:11:11:1

1

VID 1 

Dev=

0

Port=30

00:00:44:44:44:44

VID 1 

Dev=

6

Port=30

00:00:44:44:44:

00:00:11:11:11:

0xABCD