System Requirements

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

JUNOS Release 8.3 or later for support of IS-IS and MPLS traffic over Layer 2.5 VPNs.
JUNOS Release 8.2 or later for support on M120 routers and MX-series routing platforms
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