Services interfaces enable you to incrementally add services
to your network. The JUNOS software supports the following services
PICs:
Adaptive Services (AS) PICs—Allow you to provide
multiple services on a single PIC by configuring a set of services
and applications. The AS PICs offer a special range of services you
configure in one or more service sets.
ES PIC—Provides a security suite for the IP version
4 (IPv4) and IP version 6 (IPv6) network layers. The suite provides
functionality such as authentication of origin, data integrity, confidentiality,
replay protection, and nonrepudiation of source. It also defines mechanisms
for key generation and exchange, management of security associations,
and support for digital certificates.
Monitoring Services PICs—Enable you to monitor traffic
flow and export the monitored traffic. Monitoring traffic allows you
to gather and export detailed information about IPv4 traffic flows
between source and destination nodes in your network; sample all incoming
IPv4 traffic on the monitoring interface and present the data in cflowd
record format; perform discard accounting on an incoming traffic flow;
encrypt or tunnel outgoing cflowd records, intercepted IPv4 traffic,
or both; and direct filtered traffic to different packet analyzers
and present the data in its original format. On a Monitoring Services
II PIC, you can configure either monitoring interfaces or collector
interfaces. A collector interface allows you to combine multiple cflowd
records into a compressed ASCII data file and export the file to an
FTP server.
Multilink Services, MultiServices, Link Services, and
Voice Services PICs—Enable you to split, recombine, and sequence
datagrams across multiple logical data links. The goal of multilink
operation is to coordinate multiple independent links between a fixed
pair of systems, providing a virtual link with greater bandwidth than
any of the members.
Tunnel Services PIC—By encapsulating arbitrary packets
inside a transport protocol, tunneling provides a private, secure
path through an otherwise public network. Tunnels connect discontinuous
subnetworks and enable encryption interfaces, virtual private networks
(VPNs), and Multiprotocol Label Switching (MPLS).
On M-series and T-series routing platforms, logical tunnel
interfaces allow you to connect logical systems, virtual routers,
or VPN instances. For more information about VPNs, see the JUNOS VPNs Configuration Guide.
For more information about configuring tunnels, see the JUNOS Services Interfaces Configuration Guide.
Services (J-series)—On J-series Services Routers,
the lt interface is an internal interface only and is not
associated with a physical medium or PIM. You can configure the logical
tunnel interface to provide class-of-service (CoS) support for data
link switching (DLSw) traffic and real-time performance monitoring
(RPM) probe packets. For more information, see the J-series Services Router Basic LAN and WAN Access Configuration Guide.
Note:
The lt interface on the J-series Services Router does
not support logical systems.