Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual page 422

JunosE 11.2.x Link Layer Configuration Guide
pppoe mtu
pppoe sessions
390
multiple IWF PPPoE sessions with the same MAC address (the address of the DSLAM
device) are not terminated until the limit on the maximum number of PPPoE sessions
configured on the major interface is reached.
See "Guidelines for Configuring Duplicate Protection for IWF PPPoE Sessions" on
page 391 for a list of considerations to be observed when you use the duplicate protection
feature for IWF PPPoE sessions.
Example
host1(config-subif)#pppoe duplicate-protection
Use the no version to disable duplicate protection.
See pppoe duplicate-protection.
Use to set the MTU using a combination of lower layer restrictions and controls.
You can specify an MTU greater than the current maximum permitted by RFC 2516, in
the range 66–65535.
You can use the use-lower-layer keyword to use the lower layer interface value minus
any PPPoE overhead. You can use the use-mtu-tag keyword to use the provided PPPoE
mtu tag value.
Example
host1(config-profile)#pppoe mtu 1380
Use the no version to restore the default value, 1494.
See pppoe mtu.
Use to specify the maximum number of PPPoE subinterfaces permitted on an interface,
in the range 1–8000 (ERX routers) or 1–32,000 (E120 and E320 router). On the ES2
10G ADV LM (E120 and E320 router), you can have PPPoE subinterfaces in the range
1–32000. The default value is 8000 (ERX routers) or 16,000 (E120 and E320 router)
or 32,000 (ES2 10G ADV LM).
The pppoe sessions command affects only those subinterfaces that you create after
issuing this command. Previously created interfaces remain, even if their number
exceeds the new value for pppoe sessions.
NOTE: The number of subinterfaces permitted on the interface for E120 and E320
routers is in the range 1–32,000 irrespective of the type of line module. However, if you
specify a value greater than the number of subinterfaces supported by a line module,
the number of subinterfaces created is the default maximum value for that line module.
For example, if you specify the number of subinterfaces for the ES2 4G LM as 32,000
interfaces, the number of subinterfaces created is 16,000 which is the default maximum
value for the ES2 4G LM.
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