Unit installation

Appendix B SNMP Management Installation and Operation Manual
B-8 SNMP Traps FCD-E1
An SNMP agent accepts routing information messages only through the port defined
as AGENT port, or through inband management.
 To enable the routing of management traffic by standard routers, the IP
router function can be configured to use the standard RIP2 protocol. In this
case, the FCD-E1 SNMP agent does not learn IP addresses through the
AGENT port.
• When the management traffic is carried in a dedicated timeslot, it is also
possible to use frame relay encapsulation in accordance with RFC 1490 (and if
required, the RIP2 routing protocol). This enables using frame relay routers to
carry the management traffic to the managed FCD-E1.
• Frame relay encapsulation is used as follows:
 In the transmit direction, the SNMP agent encapsulates the management
messages in frames with a predetermined DLCI (always DLCI 100), and
sends them at the selected rate through the selected main link timeslot.
 In the receive direction, the SNMP agent monitors the specified timeslot,
analyzes packets received with DLCI 100, and analyzes the received data to
detect management messages (any such messages are then processed as
usual).
FCD-E1 SNMP agent does not support frame relay management protocols
(ANSI T1.617 Annex D, LMI, etc.), nor is such support required.
The RAD proprietary protocol provides better routing capabilities, therefore it is
recommended to use it whenever feasible.
Preventing Management Access to the Other Network Equipment
By default, the internal IP router function of the FCD-E1 SNMP agent will route
management traffic received through any link configured for management access,
to all the other links and ports that are also configured for management access.
There are certain applications in which this is not desirable: a particular
configuration of this type is a link that ends in equipment managed by a “foreign”
management station, which should not be able to access the other equipment in
the network.
To prevent a management station from accessing other equipment through the IP
router function of the FCD-E1 SNMP agent, the user can configure that link for
operation using a dedicated timeslot for management traffic but without enabling
any routing protocol (i.e., neither the RAD proprietary, not the RIP2 routing
protocol).
B.5 SNMP Traps
The FCD-E1 SNMP agent supports the standard MIB-II traps. In addition, each
FCD-E1 alarm is sent as a specific trap to the management station.
Note
Note