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OS6600 IPC Communication
page -58 OmniSwitch Troubleshooting Guide September 2005
OS6600 IPC Communication
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:
S
l
ot
1
S
l
ot
2
S
l
ot
3
S
l
ot
4
S
l
ot
5
00:00:11:11:11:1
1
CAM Entry on device 5
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
IPC Frame sent from Slot 1 to Slot 4
CAM entry on device 1