SNMP MIB Objects
E-7
3166-A2-GB20-20
March 1999
IP Group – “ipForwarding” Object (ip 1)
This object specifies whether the unit is acting as an IP gateway in respect to the
forwarding of a datagram received by, but not addressed to, this unit. Only the
following value is supported by the DSU/CSU.
forwarding(1) – The unit is acting as a gateway.
IP Group – “ipAddrTable” Object (ip 20)
The address table is supported by the DSU/CSU.
IP Group – “ipAdEntAddr” Object (ipAddrEntry 1)
The ipAdEntAddr object is an IP address supported by the device and serves as
the index to the address table. Since indexes for tables must be unique, only one
ifIndex may be displayed for each IP address supported by the device. If you
have configured the same IP address for multiple interfaces or for default IP
addresses, you will not see all interfaces that support a particular IP address
upon display of the ipAddrTable.
IP Group – “ipAdEntIfIndex” Object (ipAddrEntry 2)
For some address table entries, the ipAdEntIfIndex object may have a value
greater than ifNumber. In these cases, the ipAdEntIfIndex refers to a proprietary
interface which is not currently implemented by the interface group of MIB II.
IP Group – “ipRouteTable” Object (ip 21)
The routing table used by the DSU/CSU is supported as a read/write table.
Entries in this table may be added, deleted, or changed. You should exercise
great caution when adding or modifying routes in the ipRoutingTable. In general,
it should not be necessary to add or modify routes in the DSU/CSU. In those
cases where it is deemed necessary, the routes should only be added to the
connected device (i.e., the device closest to the destination). Internal routing
mechanisms will propagate the route to the other devices.
An existing route may be effectively deleted by setting the ipRouteType object to
“invalid” for the entry to be deleted. An existing route may be modified by
changing fields in the desired entry (indexed by ipRouteDest) of the routing table.
A new route may be added by specifying values for a table entry for which the
index (“ipRouteDest”) does not already exist.
To add a route using an SNMP set, you must specify a group of minimal objects.
These variable bindings must be contained in a single Protocol Data Unit (PDU).
The objects are described in more detail in the following sections. The minimal
set consists of:
ipRouteDest
ipRouteIfIndex
Summary of Contents for 3166 DSU
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