NOTE: The 2 x 64-GB SSDs installed in the PTX1000 support the request vmhost snapshot
command, which creates a recovery snapshot of the currently running and acve le system
parons, and request vmhost snapshot recovery command, which recovers the primary disk from
the snapshot content stored in the backup disk. In addion, the 64-GB SSDs support
enhanced hardware resiliency through storage paroning and redundancy.
Earlier versions of the PTX1000 have 2 x 32-GB M.2 SATA SSDs. PTX1000 routers with 32-
GB SSDs do not support the request vmhost snapshot and request vmhost snapshot recovery
commands, and do not support enhanced hardware resiliency. To determine the size of the
SSDs installed in your device, issue the show vmhost hardware CLI command. The capacity of Disk1
and Disk2 is displayed in the output as 32.0 GB if 32-GB SSDs are installed, and the capacity is
displayed as 50.0 GB if 64-GB SSDs are installed. See the Junos OS Soware Installaon and
Upgrade Guide for more informaon.
• Forwarding operaons are performed by the Packet Forwarding Engines, which include ASICs
designed by Juniper Networks. The custom ExpressPlus ASICs enable the PTX1000 to provide up to
2.88 terabits per second (Tbps) of forwarding capacity. The ExpressPlus ASICs are connected to
Hybrid Memory Cubes (HMCs). These high-eciency memory modules provide packet buering,
virtual output queue (VOQ) memory, and improved logical system scale.
TIP: For informaon about features supported on PTX Series routers, see Feature Explorer.
Benets of the PTX1000 Router
• Increased scalability—The PTX1000 scales to 3 Tbps in a single chassis, supporng up to 288 10-
Gigabit Ethernet interfaces, 72 40-Gigabit Ethernet interfaces, and 24 100-Gigabit Ethernet
interfaces, giving service providers the performance and scalability needed as networks grow. The
purpose-built ASICs in the PTX1000 provide enhanced packet processing for both full IP
funconality and MPLS transport, accommodang scale as trac connues to increase and
opmizing IP/MPLS transit funconality.
• Space eciency—Providing high capacity in a compact 2U form-factor, the PTX1000 meets
installaon needs for peering Internet exchange points, peering collocaons, central oces, and
regional networks, especially in emerging markets.
• Always-on infrastructure base—The PTX1000 is engineered with full hardware redundancy for
cooling, power supplies, and forwarding, allowing service providers to meet stringent service-level
agreements across the core.
3