Stateful Line Module Switchover Platform Considerations

Stateful line module switchover is supported on all E120 and E320 routers that contain ES2 4G line modules installed with the ES2-ES1 Service IOA. See the E120 and E320 Module Guide for modules supported on the E120 and E320 Broadband Services Routers.

Table 15 lists the line module, SRP module, and IOA slot combinations that support stateful switchover of line modules and stateful switchover for LNS sessions, when the router operates as an LNS device on one side of an L2TP tunnel.

Table 15: Module Configurations Supported for Stateful Switchover of LNS Sessions

Router Model

SRP and SFM Model

Number of L2TP tunnels and sessions

Number of Active and Standby ES2-ES1 Service IOAs

Downlink and Uplink LMs

Support for Stateful Switchover of LNS Sessions

E320

SRP-100

16,000 tunnels and 16,000 sessions

2 Service IOAs (1 active and 1 standby)

ES2 4G LM and GE-4 IOA

Supported

E320

SRP-100

16,000 tunnels and 32,000 sessions

4 Service IOAs (2 active and 2 standby)

ES2 4G LM and GE-4 IOA

Supported

E320

SRP-320

32,000 tunnels and 32,000 sessions

4 Service IOAs (2 active and 2 standby)

ES2 4G LM and GE-4 IOA

Supported

E120

SRP-320

16,000 tunnels and 16,000 sessions

2 Service IOAs (1 active and 1 standby)

ES2 10G LM and GE-8 IOA

Not supported

E120

SRP-320

32,000 tunnels and 32,000 sessions

4 Service IOAs (2 active and 2 standby)

ES2 10G LM and GE-8 IOA

Not supported

E120

SRP-320

16,000 tunnels and 16,000 sessions

2 Service IOAs (1 active and 1 standby)

ES2 4G LM and GE-8 IOA

Supported

E120

SRP-320

32,000 tunnels and 32,000 sessions

4 Service IOAs (2 active and 2 standby)

ES2 4G LM and GE-8 IOA

Supported

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