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JUNOSe 11.1.x Physical Layer Configuration Guide
Access Operation
The ES2 10G LM and ES2-S2 10GE PR IOA combination provides traditional broadband
access services such as PPPoE and subscriber interfaces. It also supports both sides
of the L2TP LNS and LAC function.
The combination can receive and transmit full duplex line rate of 10 GB (10 GB at
the ingress and 10 GB at the egress). The IOA can also support 9600-byte jumbo
packets at both the ingress and egress.
NOTE: The size of jumbo packets refers to the maximum allowable size in bytes of
the MRU for the jumbo Ethernet frames and not the maximum allowable size in
bytes of the MTU (frames transmitted from the egress interface).
Multicast
The ES2 10G LM can receive multicast traffic, including all multicast control protocols.
The ES2 10G LM can also transmit multicast control protocol frames and multicast
data frames to perform multicast egress elaboration.
Flow Control and Policy
The ES2 10G LM and ES2-S2 10GE PR IOA combination supports QoS functionality
that is available on other ASIC-based Ethernet modules.
Currently, flow control using MAC pause frames is disabled on the ES2-S2 10GE PR
IOA. The IOA does not transmit or receive pause frames. Instead, the system
prioritizes control traffic over non-control traffic (that is, data). For a list of types of
control traffic, see "High-Density Ethernet" on page 196 .
For information about configuring policies on the ES2 10G LM and ES2-S2 10GE PR
IOA, see JUNOSe Policy Management Configuration Guide.
ES2 10G ADV LM Combination
With a 100 Gbps fabric configuration, the E320 router can accommodate up to 2
combinations of ES2 10G ADV LMs and ES2-S2 10GE PR IOAs. You must install a
combination in either of the turbo slots (slot 2 or slot 4). The 100 Gbps allocates
10 Gbps of overall bandwidth to each of these slots.
With a 120 Gbps fabric configuration, the E120 router can accommodate up to 6
combinations of ES2 10G ADV LMs and ES2-S2 10GE PR IOAs. You can install a
combination in any of the line module slots, each of which is allocated 10 Gbps of
overall bandwidth.
With a 320 Gbps fabric configuration, the E320 router can accommodate up to 12
combinations of ES2 10G ADV LMs and ES2-S2 10GE PR IOAs. You can install a
combination in any of the line module slots, each of which is allocated 10 Gbps of
overall bandwidth.
194
10-Gigabit Ethernet IOAs
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