Juniper JUNOSE 11.2.X MULTICAST ROUTING, Configuration Manual

Page: 205 / 256

Managing High-Density Ethernet
With a 100 Gbps fabric configuration, the overall data rate for the ES2 4G LM with the
ES2-S1 10GE IOA is 3.4 Gbps for large packets. With a 120 Gbps or a 320 Gbps fabric
configuration, the overall data rate for the ES2 4G LM with the ES2-S1 10GE IOA is 3.9 Gbps
for large packets. In all configurations, the line module becomes highly oversubscribed
because of the available wire rate on the IOA. When paired with the ES2 4G LM, the data
rate of the ES2-S1 10GE IOA is bandwidth limited with larger frames, and the packet rate
is limited with smaller frames.
Currently, flow control using MAC pause frames is disabled on the ES2-S1 10GE IOA. The
IOA does not transmit or receive pause frames.
For more information about high-density Ethernet on E Series routers, see “High-Density
Ethernet” on page 187
.
ES2-S2 10GE PR IOA
The E120 and E320 routers support the ES2-S2 10GE PR IOA. Other E Series routers do
not support the ES2-S2 10GE PR IOA.
The ES2-S2 10GE PR IOA is offered in a full-height size that uses both adapter bays. The
IOA is identified by the software as adapter bay 0. For more information about installing
IOAs, see the
E120 and E320 Hardware Guide .
The ES2-S2 10GE PR IOA has one port, uses a range of XFPs to support different optical
modes and cabling distances, and accepts 10 LC-style fiber-optic connectors.
The single port on the ES2-S2 10GE PR IOA has a redundant port. If the active port fails,
the redundant port automatically becomes active. You can configure only the active port
for a 10-Gigabit Ethernet interface; you cannot configure the redundant port. Cabling
both ports provides a redundant path to the 10-Gigabit Ethernet interface.
The ES2-S2 10GE PR IOA pairs with the ES2 10G Uplink LM to provide uplink services or
the ES2 10G LM or the ES2 10G ADV LM to provide access services.
ES2 10G Uplink LM Combination
With a 100 Gbps fabric configuration, the E320 router can accommodate up to 2
combinations of ES2 10G Uplink 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 Uplink 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 Uplink 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.
183 Copyright © 2010, Juniper Networks, Inc.
Chapter 5: Configuring Ethernet Interfaces