Appendix C Configuring In-Band Management
Using the Routed Connection Configuration
C-6
255-700-025
PacketStar
™
Access Concentrator 60 User Guide
, Issue 1
Release 6.3.0
PSAX system. The intermediate router PSAX system has two types of in-
band connections: upstream connections to a router PSAX system and
downstream connections to either the router PSAX system or the end
system PSAX system. This helps to form a simple tree structure (see
Figure C-2 on page C-5).
3
On the PSAX system, the in-band management interface (primary)
should be assigned an IP address that should be on a different network
than that of its Ethernet interface.
4
Also, for all the PSAX system models (except the main router PSAX
system), the Ethernet interface IP network should be different from the
SUN machine’s Ethernet interface IP network.
5
All of the NMS stations should be in the one IP network, but can be in
different subnets connected to the main router PSAX system by an
Ethernet or OC3-ATM connection.
6
All the end system and router PSAX system in-band interface IP
addresses should be in the same IP network. They can have different
masks (that is, the PSAX system downstream can have a mask wider in
ones than that of the parent node). This allows multiple connections to
be set to end system PSAX system that are in the same in-band subnet.
Routing to intermediate PSAX systems is done based on the subnet
mask. The subnetwork address provided in the connection table and
routing to the end system PSAX system is based on the host address of
the end system configured in the connection table. Routing to the NMS
stations is based on the mask and network address to the NMS stations
configured in the connection table. (With this configuration, an
upstream connection should be made only to the NMS network).
7
The tree structure is based on subnet routing, where connections to each
subtree lie in one subnet and the connections to a downstream subtree
are configured with in-band subnetwork addresses and a mask larger
(wider in ones) than the parent subtree. (See the example configuration
in the next section).
8
The downstream connections to intermediate routers should be
configured with the subnetwork address of the subtree and a mask
larger (wider in ones) than that of the parent connections.
9
The upstream connection should only be to the NMS stations’ network
address with an appropriate mask.
10
On the host (SUN or PC) machine, an IP routing table entry should be
added. This entry should be a network-specific routing table entry, with
the in-band network address of each of the remote PSAX systems and
the main router PSAX system Ethernet interface IP address as the
gateway. The metric should be set to the depth of the tree (or default
10).
11
The default gateway should not be configured with an IP address within
the in-band network.
End
