Chapter 2 Card Reference

ML-100T-8 Card

Note Although the VC4 frames are multiplexed into an VC4-4c frame, the frame carries at most an VC4-2c payload, leaving half of the VC4-4c bandwidth free.

In the egress direction (SDH-to-Ethernet), the mux/demux extracts the first and second VC4 SPEs from the VC4-4 frame it receives from the BTC-48 before sending it to the POS mapper. The VC4 SDH SPEs carrying GFP or PPP/HDLC encapsulated Ethernet frames are then extracted and buffered in the POS mapper external memory. This memory is used for providing alignment and differential delay compensation for the received high-order VCAT payloads. After alignment and delay compensation have been done, the Ethernet frames are decapsulated with one of the framing protocols (GFP or PPP/HDLC). Decapsulated Ethernet frames are then passed onto the network processor for QoS queuing, traffic scheduling, packet switching, and multiplexing. The network processor switches the frame to one of the corresponding PHY channels and then onto the Ethernet port for transmission to the external clients.

2.5.3 ML-100T-8 Card-Level Indicators

The ML-100T-8 card faceplate has two card-level LED indicators, described in Table 2-8.

Table 2-8 ML-100T-8 Card-Level Indicators

Card-Level LEDs

Description

 

 

SF LED (Red)

The red FAIL LED indicates that the card processor is not ready or that a

 

catastrophic software failure occurred on the ML-100T-8 card. As part of the

 

boot sequence, the FAIL LED blinks until the software deems the card

 

operational, then it turns off.

 

 

ACT LED (Green)

The ACT LED provides the operational status of the ML-100T-8. When the

 

ACT LED is green, it indicates that the ML-100T-8 card is active and the

 

software is operational; otherwise, it is off.

 

 

2.5.4 ML-100T-8 Port-Level Indicators

The ML-100T-8 card has two LEDs embedded into each of the eight Ethernet port RJ-45 connectors. The LEDs are described in Table 2-9.

Table 2-9 ML-100T-8 Port-Level Indicators

Port-Level Indicators

Description

 

 

ACT LED (Amber)

A steady amber LED indicates a link is detected, but there is an issue

 

inhibiting traffic. A blinking amber LED means traffic is flowing.

 

 

LINK LED (Green)

A steady green LED indicates that a link is detected, but there is no

 

traffic. A blinking green LED flashes at a rate proportional to the level

 

of traffic being received and transmitted over the port.

 

 

Both ACT and LINK LED

Unlit LEDs indicate no traffic.

OFF

 

 

 

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

 

78-19417-01

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Cisco Systems 15310-MA manual 3 ML-100T-8 Card-Level Indicators, 4 ML-100T-8 Port-Level Indicators

15310-MA specifications

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