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MX3RMM DATA PATH BLOCK DIAGRAM
Figure 3-9
shows that the MX3 Remote Management Module (MX3RMM) contains an Ethernet
bridge that bridges between two Ethernet jacks, two T1/FT1 interfaces, and the MX3216
Controller Card. One of the Ethernet jacks is on the front panel of the MX3RMM and the other
is on the rear panel of the MX3 chassis. The Ethernet traffic is encapsulated in Point-to-Point
Protocol (PPP) for transport over the T1/FT1.
MOD A #1 (MA1)
or
Interface A
MOD B #1 (MB1)
Rear Panel
Ethernet Jack
By mapping these MX3RMM T1/FT1 interfaces to a DS1 in one of the DS3s, the MX3216 can
be remotely managed using Telnet. Equipment connected to the Ethernet jacks can also be
accessed remotely. The Network (T1/FT1) Interface A is connected through the MX3 chassis to
the expansion slot DS1 #1 in the MX3216 3/1 cross-connect (see
This is either Module A #1 (MA1) or Module B #1 (MB1), depending on whether the MX3RMM
is installed in Expansion Slot A (bottom slot) or Expansion Slot B (top slot), respectively. In
like manner, the Network (T1/FT1) Interface B is connected to the expansion slot DS1 #2 in
the MX3216 3/1 cross-connect. This is either Module A #2 (MA2) or Module B #2 (MB2),
depending on whether the MX3RMM is installed in Expansion Slot A (bottom slot) or
Expansion Slot B (top slot), respectively.
The T1/FT1 interfaces can be provisioned for fractional T1 (FT1) operation so that only a
portion of the T1 bandwidth is used for Ethernet traffic, and the other timeslots can pass
through voice or data traffic.
The MX3RMM also contains a terminal server with four asynchronous RS-232 ports. This
allows the co-located equipment with RS-232 management ports to be remotely managed.
61189008L1-1B
Network
T1/FT1
Interface
Front Panel
Ethernet Jack
Figure 3-9. MX3RMM Data Path Block Diagram
Section 3, Application Guidelines - MX3RMM Data Path Block Diagram
Unassigned
T1/FT1
Timeslots
Interface
Ethernet Bridge
Terminal
Server
TSR Ports
1-4
MOD A #2 (MA2)
Network
or
Interface B
MOD B #2 (MB2)
Figure 3-1
on page 3-2).
3-9
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