Owner`s manual

4–3Network Management
The DECagent 90 proxy agent is still required for some 90-series devices that do not
support the SNMP protocol, for example, the DECbridge 90, the DECbridge 90FL,
the DECserver 90L, and the DECserver 90L+. All DECrepeater 90 products; how-
ever, can be managed by the Hub Manager using the IETF repeater MIB. The
DECagent 90 does not have to be installed into the same hub it manages, it can be
located anywhere on the same extended LAN and manage 90-series devices.
Using the Out-of-Band IP Address of the Hub Manager
You can manage network modules in-band by using the Hub Manager’s out-of-band
IP address and a terminal server that supports SLIP, or with a device that supports
routing IP packets from its Ethernet interface using SLIP on an asynchronous port. If
you have a DECserver 900TM, DECserver 90TL, or a DECserver 90M installed in
your hub, you can establish a SLIP connection between one of the terminal server
ports and the Hub Manager OBM port.
Using the IP Address of the DECagent 90
With this management method, you manage the 90-series modules exactly as you
do in the DEChub 90. However, they can take advantage of DEChub 900 MultiSwitch
features such as redundant power and Hub Status Display messages. 900-series
modules installed in a hub using this management method must be configured and
managed as standalone units, and cannot use backplane flexible channels.
When you install a DECagent 90 in a DEChub 900 MultiSwitch and the DECagent 90
is managing the hub, the Hub Manager’s in-band and out-of-band IP address must
not be configured.
Managing Network Modules Out-of-Band
You manage the DEChub 900 MultiSwitch, 900-series and 90-series network mod-
ules with out-of-band management (OBM) through the OBM port.
This method is identical to in-band management, except that you assign an OBM IP
address and an OBM port speed from the setup port Hub Installation menu. The IP
address and the port speed at each end of the communications link must be identical.
If you want to switch from managing your DEChub 900 MultiSwitch and network
modules in-band to managing it out-of-band, change the IP address for the Hub
Manager in HUBwatch from its in-band IP address to its out-of-band IP address.