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FAQ - How to reach the MAX bandwidth for a Packet-Based E-Line Service in RTN 900 V1R2

Publication Date:  2012-07-25 Views:  96 Downloads:  0

Issue Description

Customer requested to test the maximum bandwidth for a single Packet-Based E-Line service running between two RTN 910 V100R002C00sPC100 ( Customer uses U2000 V100R001C00.

Alarm Information


Handling Process

When using Hybrid IFU2 boards, we could only reach the MAX native Ethernet capacity when the E1 capacity was set to 0. This is because there was no longer TDM services configured in the same link.

Root Cause

Customer tested the bandwidth capacity of the native TDM and the native Ethernet channel for the RTN hybrid version V100R002C00sPC100 ( by using IFU2, EM6T, CSHA and CSHC boards.

After configuring a GE service using Jumbo Frame (length 9600) between two RTN 910, as a E-Line PORT+VLAN, 802.1Q, we could reach a MAX of 30% of the GE bandwidth, this is 300 Mbps by transmitting on the MW link using ODU-LP @ 8GHz, 56MHz, 256QAM. Eventhout the service was running, there was a CONFIG_NOSUPPORT alarm confirmed in both RTN and U2000, so R&D does not recommend the configuration but test itself, it did work!

This does not confirm the Ethernet Throughput in Technical Specifications from 360Mbps to 420Mbps for IFU2 @ 56MHz, 256QAM, but customer considered that this configuration is not recommended and should have not been supported by the ODU in the test, so the RTN performance was excellent.


For RTN 900 family V100R002 the IFU2 and IFX2 boards both support Hybrid & Packet radio. The IF1 board only supports TU/STM-1-based radio.