Juniper JUNOSE 11.2.X MULTICAST ROUTING, Configuration Manual

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Managing High-Density Ethernet
When installed in an E120 or an E320 router with any SRP module combination, the
overall data rate for the ES2 10G LM with one ES2-S1 GE-8 IOA is limited to 5 Gbps. The
overall data rate for the ES2 10G LM with two ES2-S1 GE-8 IOAs is limited to 10 Gbps. In
all configurations, the line module can become oversubscribed because of the IOA
available wire rate (8 Gbps).
Currently, flow control using MAC pause frames is disabled on the ES2-S1 GE-8 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 10G ADV LM Combination
You can combine an ES2–S1 GE-8 IOA in a slot only with another ES2–S1 GE-8 IOA when
paired with the ES2 10G ADV LM.
With a 100 Gbps fabric configuration, the E320 router can accommodate up to 2
combinations of ES2 10G ADV LMs and ES2-S1 GE-8 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-S1 GE-8 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-S1 GE-8 IOAs. You can install a combination
in any of the line module slots, each of which is allocated 10 Gbps of overall bandwidth.
Bandwidth and Line Rate Considerations
Each ES2-S1 GE-8 IOA is connected to the ES2 10G ADV LM through a 5 Gbps bus.
Therefore, the aggregate bandwidth of any IOA is limited to 5 Gbps.
Table 21 on page 179 lists the average data rate on the ES2-S1 GE-8 IOA when installed
in E120 and E320 routers with one ES2 10G ADV LM installed.
Table 21: Average Data Rate for One ES2-S1 GE-8 IOA Installed with an
ES2 10G ADV LM
100 Gbps, 120 Gbps, or 320 Gbps
Configuration
Average Data Rate per GE-8 IOA
(> 128 Byte Packets)
Port Combination
1 Gbps per port Any five ports
625 Mbps per port All eight ports
179 Copyright © 2010, Juniper Networks, Inc.
Chapter 5: Configuring Ethernet Interfaces