Bandwidth And Line Rate Considerations; Managing High-Density Ethernet; Es2 10G Adv Lm Combination - Juniper JUNOSE 11.2.X PHYSICAL LAYER Configuration Manual

Copyright © 2010, Juniper Networks, Inc.
With a 120 Gbps fabric configuration, the E120 router can accommodate up to 6
combinations of ES2 10G LMs and ES2-S3 GE-20 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 LMs and ES2-S3 GE-20 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

Table 23 on page 181 lists the average data rate on the ES2-S3 GE-20 IOA when installed
in E120 and E320 routers with one ES2 10G LM installed.
Table 23: Average Data Rate for One ES2-S3 GE-20 IOA Installed with
an ES2 10G LM
100 Gbps, 120 Gbps, or 320 Gbps
Configuration
Port Average Data Rate per GE-20 IOA
Combination (> 128 Byte Packets)
Any 10 ports 1 Gbps per port
All 20 ports 500 Mbps per port

Managing High-Density Ethernet

When installed in an E120 or E320 router with any SRP module combination, the overall
data rate for the ES2 10G LM with one ES2-S3 GE-20 IOA is limited to 10 Gbps. The line
module can become oversubscribed because of the IOA available wire rate (20 Gbps).
Currently, flow control using MAC pause frames is disabled on the ES2-S3 GE-20 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

With a 100 Gbps fabric configuration, the E320 router can accommodate up to 2
combinations of ES2 10G ADV LMs and ES2-S3 GE-20 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-S3 GE-20 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 ADV LMs and ES2-S3 GE-20 IOAs. You can install a combination
in any of the line module slots, each of which is allocated 10 Gbps of overall bandwidth.
Chapter 5: Configuring Ethernet Interfaces
181