■ JUNOS subscriber access scaling values (M120, M320, and MX Series
routers)—Table 2 on page 28 lists the DHCP, PPP, and PPPoE scaling values
supported for subscriber access in this release of M120, M320, and MX Series
routers. In this table, DPC means only MX Series Enhanced Queuing IP Services
DPCs (DPCE-R-Q-40GE-SFP and DPCE-R-Q-4XGE-XFP). These DPCs support only
DHCP subscribers; they do not support PPP subscribers.
Table 2: Subscriber Access Scaling Values for M120, M320, and MX Series Routers
MX480/960MX240M120/M320Subscriber Access Feature
120,000120,000–
DHCP client bindings per chassis
DHCP subscriber VLANs
16,00016,000–Per DPC
64,00032,000–Per chassis with DPCs
64,00064,000–Per Trio MPC/MIC
64,00064,000–Per chassis with Trio MPC/MIC
PPP logical interfaces
63,99963,99915,999Dynamic PPPoE interfaces per chassis
––4000Dynamic PPPoE interfaces per IQ2/IQ2E PIC
32,00032,000–Dynamic PPPoE interfaces per Trio MPC/MIC
15,99915,99915,999Static interfaces per chassis
PPPoE subscriber VLANs
––2000Per IQ2/IQ2E PIC
––8000Per chassis with IQ2/IQ2E PIC
32,00032,000–Per Trio MPC/MIC
32,00032,000–Per chassis with Trio MPC/MIC
PPP connections (logical interfaces) are supported in a range of configurations.
For example, 63,999 PPP connections per chassis are supported when all
subscribers are configured on the same VLAN. In this case, 63,999 pp0 interfaces
are configured under the same VLAN logical interface and the one remaining
logical interface is consumed for the single VLAN.
At the other extreme, when you configure each subscriber on a separate VLAN
(using stacked VLANs), up to 32,000 PPP connections per chassis are supported.
28 ■ New Features in JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
JUNOS 10.1 Software Release Notes
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