Compaq ServerNet ServerNet II Installation Manual page 182

Figure I-2 illustrates the manner by which the SNMP-manager Get requests for Switch data are
forwarded to and returned from the primary SANMan.
SNMP Manager
on Remote LAN
Node
SNMP Manager
WINSOCK
TCP/IP
Network Driver
Interface
Specification
Network
Interface
Card Driver
LAN Cloud
Figure I-2. ServerNet II Switch SNMP Architecture
Figure I-2 shows that the SNMP manager can reside on a node connected by a LAN or on one
of the nodes connected by the ServerNet II SAN to the target ServerNet II Switch. If the SNMP
manager is on a remote LAN node, then the ServerNet II Switch's primary SANMan node must
itself be directly connected to that LAN. If the SNMP manager is on another node of the
ServerNet II Switch, then SNMP requests are routed through the ServerNet II SAN to the
primary SANMan node.
The SNMP management application needs a list of IP addresses of all potential primary
SANMan nodes in the SAN. The management application can issue SNMP requests to the list
Primary SANMan
Windows NT
Extendible
Agent
ServerNet Switch
Agent Extension
WINSOCK
Device Access
User
TCP/IP
Request
NDIS
ServerNet
NIC
NDIS Driver
Driver
ServerNet
PCI Adapter
(SPA) Driver
ServerNet II SNMP Management I-3
Layer (DAL)
Data
Returned
Get
SANMan
Switch
ServerNet SAN
Cloud
SNMP Manager
on ServerNet SAN
SNMP Manager
WINSOCK
TCP/IP
Network Driver
Interface Specification
ServerNet
NDIS Driver
ServerNet
PCI Adapter
(SPA) Driver