HP 6125G HP 6125G & 6125G/XG Blade Switches Network Management and Mon - Page 150
Configuring IPC, Overview, Node, Link, Channel
View all HP 6125G manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 150 highlights
Configuring IPC This chapter provides an overview of IPC and describes the IPC monitoring commands. Overview Inter-Process Communication (IPC) provides a reliable communication mechanism among processing units, typically CPUs. IPC is typically used on a distributed device or in an IRF fabric to provide reliable inter-card or inter-device transmission. This section describes the basic IPC concepts. Node An IPC node is an independent IPC-capable processing unit, typically, a CPU. The device is a centralized device that has only one CPU. The IRF fabrics formed by them have multiple CPUs, or IPC nodes. Link An IPC link is a connection between any two IPC nodes. Any two IPC nodes have one and only one IPC link for sending and receiving packets. All IPC nodes are fully meshed. IPC links are created when the system is initialized. An IPC node, upon startup, sends handshake packets to other nodes. If the handshake succeeds, a connection is established. The system uses link status to identify the link connectivity between two nodes. An IPC node can have multiple links, and each link has its own status. Channel A channel is the communication interface between peer upper layer application modules that use different IPC nodes. Each node assigns a locally unique channel number to each upper layer application module for identification. An upper layer application module sends data to an IPC module in a channel, and the IPC module sends the data to a peer node across a link, as shown in Figure 52. 143