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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
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Chapter 2 Card Reference
CE-MR-6 Card
2.4 CE-MR-6 Card
This section describes the features and functions of the CE-MR-6 Ethernet card. This card is compatible
with the Cisco ONS 15310-MA SDH.
The CE-MR-6 card provides six IEEE 802.3-compliant 10/100/1000-Mbps Gigabit Ethernet ports at the
ingress. At the egress, the CE-MR-6 card provides an integrated Ethernet over SDH mapper with six
virtual ports to transfer Ethernet packets over an SDH network.
The CE-MR-6 card uses pluggable Small Form-Factor Pluggable Interface Converters (SFPs) to
transport Ethernet traffic over an SDH network. SFP modules are offered as separate orderable products
for flexibility. For details, see the “2.8 SFP Modules” section on page 2-19.
The Ethernet frames are encapsulated using the ITU-T generic framing procedure (GFP) [with or
without cyclic redundancy check (CRC)] or LAN extension (LEX), the point-to-point protocol (PPP)
with high-level data link control (HDLC).
The Ethernet ports automatically configure to operate at either half or full duplex and can determine
whether to enable or disable flow control. The Ethernet ports can also be oversubscribed using flow
control.
The CE-MR-6 card supports the link capacity adjustment scheme (LCAS), which allows hitless dynamic
adjustment of SDH link bandwidth. The CE-MR-6 card's LCAS is hardware-based, but the CE-MR-6
also supports software LCAS (SW-LCAS). This makes it compatible with ML-Series cards, which
support only SW-LCAS, along with the CE-100T-8 cards. The CE-MR-6 card also supports the non link
capacity adjustment scheme (no-LCAS). The CE-MR-6 card supports both flexible and fixed VCAT
groups (VCG).
Note The SW-LCAS is not supported on CE-MR-6 cards for interoperation with the CE-100T-8 and
ML-MR-10 cards.
Note The CE-MR-6 card does not support interoperation between the LCAS and non-LCAS circuits.
The Ethernet frames can be mapped into:
• E1X1 G.707-based high-order virtual concatenated (HO VCAT) payloads
–
VC4-nv, where n is 1 to 7
–
VC3-nv, where n is 1 to 21
Table 2-5 CE-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
OFF
Unlit green and amber LEDs indicate no traffic.