SNMP Configuration and Management Manual

TCP/IP Subagent
SNMP Configuration and Management Manual—424777-006
8-2
Architectural Overview
•
The SNMP agent sends response messages to the SNMP manager from which
the request originated.
Most of the information in the MIB-II groups as supported by the TCP/IP Subagent
describe the HP TCP/IP subsystem and, if the interface is the ServerNet LAN Systems
Access (which supports parallel LAN I/O in a G-series or H-series ServerNet based
system), the underlying SLSA subsystem.
The only information the TCP/IP Subagent retrieves regarding an underlying X.25
Access Method (X25AM) subsystem (which supports wide area network data
communications over an X.25 packet-switching data network) is information returned
from inquiries to the HP TCP/IP subsystem.
TCP/IP Subagent Scenarios on page 8-3 illustrates valid and invalid configuration
scenarios to keep in mind when planning for your TCP/IP Subagent configuration. An
X indicates an invalid configuration.
Figure 8-1. Architectural Overview of the TCP/IP Subagent
For G-series, using the SLSA SRL (ZLANMSRL)For
H-series, using SLDA DLL (ZLANMDLL)
TCP/IP
Subagent
SCP
($ZNET)
SLSA Manager
($ZZLAN)
$ZLMnn
SNMP Agent
1
2
5
Legend
G
-
S
e
r
i
e
s
o
r
H
-
s
e
r
i
e
s
T
C
P
/
I
P
TCP/IP
($ZTCO)
#subnet(s)
G-series and H-series SLSA
Managed TCP/IP Subsystem
3
Subagent retrieves
information from
managed TCP/IP
subsystem
SNMP agent forwards
authenticated requests to
TCP/IP Subagent
SNMP agent
responds to requests
and also sends
unsolicited traps to
manager
4
Subagent returns
responses and
snUp/snDown trap
messages to
SNMP agent
SNMP Manager
MIB-II and
TCP/IP
Subagent MIB
Definitions
SPI messages
SNMP request/response messages
SNMP traps
SLSA SRL call
VST998.vsd