E120 Router And E320 Router; Sessions And Tunnels Supported - Juniper JUNOSE 11.1.X - BROADBAND ACCESS CONFIGURATION GUIDE 6-4-2010 Configuration Manual

E120 Router and E320 Router

To use an LNS on an E120 router or an E320 router, you must install an ES2 4G line
module (LM) with an ES2-S1 Service I/O adapter (IOA), or an IOA that supports the
use of shared tunnel-server ports. For information about installing modules in these
routers, see the E120 and E320 Hardware Guide.
The ES2 4G LM and ES2-S1 Service IOA combination provides a dedicated
tunnel-server port that is always configured on the IOA. Unlike SMs, the ES2 4G LM
requires the ES2-S1 Service IOA to condition it to receive and transmit data to other
line modules. The ES2-S1 Service IOA also does not have ingress or egress ports.
You can also create tunnels on IOAs that support shared tunnel-server ports. You
can configure (provision) a shared tunnel-server port to use a portion of the IOA's
bandwidth to provide tunnel services. For a list of the IOAs that support shared
tunnel-server ports, see the E120 and E320 Module Guide.
For information about IOAs supported by the LAC and LNS and the type of support
each module type receives, see E120 and E320 Module Guide, Appendix A, IOA Protocol
Support.

Sessions and Tunnels Supported

The E120 and E320 routers support 60,000 L2TP sessions, the ERX1440 router
supports 32,000 L2TP sessions, and all other E Series routers support a maximum
of 16,000 L2TP sessions. The following guidelines apply:
On all E Series routers
The SM and the ES2-S1 Service IOA both support the termination of 16,000 LNS
sessions per module. Therefore, if you want to apply input or output policies to
all of the available LNS sessions, you can only terminate a maximum of 8000
sessions per module.
On the E120 router, E320 router, and the ERX1440 router
You can create a systemwide maximum of 60,000 sessions per E120 or E320
router or 32,000 sessions per ERX1440 router. The maximum session limit is
spread in any combination across a maximum of 8000 tunnels. For a router that
is operating as an LAC for some tunnels and as an LNS for others, the 8000
tunnels and the router's applicable maximum sessions limits apply to the
combined total of LAC and LNS tunnels and sessions.
On all E Series routers except the ERX1440 router, E120 router, and the E320
router
You can create a systemwide maximum of 16,000 sessions spread in any
combination across a maximum of 8000 tunnels shared between an LAC and
an LNS. For a router that is operating as an LAC for some tunnels and as an LNS
for others, the 8000 tunnels and 16,000 sessions limits apply to the combined
total of LAC and LNS tunnels and sessions.
Chapter 11: L2TP Overview
Sessions and Tunnels Supported
341