SRP modules have a corresponding SRP I/O module that contains a Fast Ethernet
management port. You can configure this port to access the router from a Telnet
session or SNMP. For more information, see “Managing the Ethernet Port on the SRP
Module” on page 402 .
For information about using high availability mode for stateful SRP switchover, see
“Managing Modules” on page 355.
E120 and E320 Broadband Services Routers
You can manage line modules, SRP modules, SFMs, and IOAs on the E120 and E320
routers. For more information about these modules, see the E120 and E320 Module
Guide.
For information about related procedures and installing modules, see E120 and E320
Hardware Guide, Chapter 4, Installing Modules. For information about upgrading
software on SRP modules, see the E120 and E320 Hardware Guide.
Line Modules and IOAs
Line modules on the E120 and E320 routers act as frameforwarding engines for the
physical interfaces, which are the IOAs.
You cannot configure the performance line rate of line modules for E120 and E320
Routers. Redundancy is supported for line modules on this router. For more
information, see Line Module Redundancy in JUNOSe Service Availability Guide.
On the E120 router, line modules can be installed in slots 0–5. On the E320 router,
line modules can be installed in slots 0–5 and 11–16. Both the E120 and E320 routers
have two turbo slots, numbered 2 and 4. When a line module is installed in a turbo
slot, it spans slots 2–3 and 4–5. The bandwidth of slot 3 or slot 5 is used for a line
module in slot 2 or slot 4 if that line module requires the turbo slot.
NOTE: If a line module is installed in slot 3 or slot 5, and the line module in slot 2
or 4 requires bandwidth, the system configures the line module it detects first. The
state of the other line module is displayed as disabled (cfg error).
The 100 Gbps switch fabric that is available with the SRP 100 on the E320 router
allocates 3.4 Gbps of overall bandwidth to each regular line module slot and 10 Gbps
of overall bandwidth to each of the turbo slots. With a 100 Gbps fabric configuration,
you must install the ES2 10G Uplink LM in the turbo slots. For more information, see
JUNOSe Physical Layer Configuration Guide.
The 120 Gbps switch fabric on the E120 router allocates 10 Gbps of overall bandwidth
to each line module slot. Similarly, the 320 Gbps switch fabric on the E320 router
allocates 10 Gbps of overall bandwidth to each line module slot. For both
configurations, you can install any line module in any of the slots.
A line module on the E120 and E320 routers can accommodate one full-height IOA
or up to two half-height IOAs per slot. In the software, adapter 0 identifies the right
Platform Considerations ■ 357
Chapter 6: Managing Modules
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