Es2 10G Adv Lm Combination; Bandwidth And Line Rate Considerations; Managing High-Density Ethernet - Juniper PHYSICAL LAYER - CONFIGURATION GUIDE V11.1.X Configuration Manual

JUNOSe 11.1.x Physical Layer Configuration Guide
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 196 .

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.

Bandwidth and Line Rate Considerations

Table 24 on page 190 lists the average data rate on the ES2-S3 GE-20 IOA when
installed in E120 and E320 routers with one ES2 10G ADV LM installed.
Table 24: Average Data Rate for One ES2-S3 GE-20 IOA Installed with an ES2 10G
ADV LM

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 ADV 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).
190
Gigabit Ethernet I/O Modules and IOAs
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