System Requirements

To implement TCC, your system must meet these minimum requirements:

• JUNOS Release 6.2 or later for CCC, TCC, and Layer 2.5 VPN support on M320 routers
• JUNOS Release 6.0 or later for CCC, TCC, and Layer 2.5 VPN support on T-series routing platforms
• JUNOS Release 5.6 or later for proxy Address Resolution Protocol (ARP) functionality in Ethernet TCC and extended VLAN TCC networks on M-series routers
• JUNOS Release 5.4 or later for Ethernet TCC and extended VLAN TCC interface encapsulation types on M-series routers
• JUNOS Release 5.2 or later for PPP TCC, Cisco HDLC TCC, ATM TCC, and Frame Relay TCC interface encapsulation types on M-series routers
• Ethernet-based PICs to support Ethernet TCC and extended VLAN TCC interface encapsulation types, with the following exceptions:

• All 8-port, 12-port, and 48-port Fast Ethernet PICs do not support TCC
• 4-port Gigabit Ethernet PICs do not support extended VLAN TCC

• Any combination of three Juniper Networks M-series or T-series routing platforms for TCC or five routing platforms for Layer 2.5 VPNs or
  Layer 2.5 circuits