Juniper ACX1000 Configuration Manual page 196

ACX Series Universal Access Router Configuration Guide
138
Two Bridge domains
Bridge domain and a VPLS instance
Only one logical tunnel (physical interface) per bandwidth type (1 Gbps or 10 Gbps)
can be configured on ACX routers. However, you can specify up to two logical tunnel
interfaces (one with 1 Gb bandwidth and another with 10 Gb bandwidth) on ACX routes.
Guaranteed bandwidth for logical tunnels is 1 Gbps and certain platforms support up
to an additional 10 Gbps bandwidth. All the services configured using logical tunnel
interfaces share this bandwidth.
The bandwidth configured on the logical tunnel interface is shared between upstream
and downstream traffic on that interface. The effective bandwidth available for the
service is half the configured bandwidth.
Multiple logical tunnel interfaces to enable configuration of separate services on each
logical interface to obtain increased bandwidth for each individual interface separately
or the bundling of individual logical tunnel interfaces is not supported.
You can configure Ethernet VLAN, Ethernet CCC, VLAN bridge on Ethernet interfaces,
and VLAN on circuit cross-connects (CCC) as encapsulation types on logical tunnel
interfaces. Other encapsulation types such as Ethernet, VLAN, Ethernet VPLS, or VLAN
VPLS are not supported.
When the encapsulation configured on the logical interface units is one of the supported
types such as Ethernet VLAN or VLAN bridge, you can enable only bridge domains or
CCC protocols on logical tunnel interfaces. Other address families or protocols such
as IPv4, IPv5, MPLS, or OSPF are not supported.
Classifier, rewrite and ingress policer configuration are supported on logical tunnel
interfaces. Fixed, BA-based, and multifield classifiers are supported on the lt- interfaces
at the physical interface-level.
802.1p, 802.1ad, TOS and DSCP based BA classifiers are supported. Remarking rules
can be configured at the port level on the LT interface. 802.1p, 802.1ad, TOS and DSCP
fields in the packet can be rewritten in the LT interface. Ingress policers are supported.
Simple, Single-rate tricolor marking (srTCM), two-rate tricolor marking (trTCM) policers
are supported. Egress policers are not supported.
Default classifiers do not work properly when lt- interfaces are configured on
non-Ethernet PICs.
Port-level queuing is supported; up to eight queues per lt- interface are supported.
These eight queues are shared between the upstream and downstream traffic traversing
through the lt- interface. If the configured bandwidth on the lt- interface is not adequate
for the upstream and downstream traffic of the services configured on the interface,
a failure occurs with traffic propagation because multiple lt- interfaces are not
supported.
Eight forwarding classes (0-7) are mapped to the eight queues based on the global
system configuration. The remainder of the scheduler configuration, buffer-size,
transmit-rate, shaping-rate, priority and WRED or drop profiles maps can be configured
on the lt- interface queues.
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