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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 8 Transponder and Muxponder Cards
8.3 TXP_MR_10G Card
The trunk port operates at 9.95328 Gbps (or 10.70923 Gbps with ITU-T G.709 Digital Wrapper/FEC)
and at 10.3125 Gbps (or 11.095 Gbps with ITU-T G.709 Digital Wrapper/FEC) over unamplified
distances up to 80 km (50 miles) with different types of fiber such as C-SMF or dispersion compensated
fiber limited by loss and/or dispersion.
Caution Because the transponder has no capability to look into the payload and detect circuits, a TXP_MR_10G
card does not display circuits under card view.
Caution You must use a 15-dB fiber attenuator (10 to 20 dB) when working with the TXP_MR_10G card in a
loopback on the trunk port. Do not use direct fiber loopbacks with the TXP_MR_10G card. Using direct
fiber loopbacks causes irreparable damage to the TXP_MR_10G card.
You can install TXP_MR_10G cards in Slots 1 to 6 and 12 to 17 and provision this card in a linear
configuration. TXP_MR_10G cards cannot be provisioned as a bidirectional line switched ring
(BLSR)/Multiplex Section - Shared Protection Ring (MS-SPRing), a path protection/single node control
point (SNCP), or a regenerator. They can only be used in the middle of BLSR/MS-SPRing and 1+1 spans
when the card is configured for transparent termination mode.
The TXP_MR_10G port features a 1550-nm laser for the trunk port and a 1310-nm laser for the for the
client port and contains two transmit and receive connector pairs (labeled) on the card faceplate.
The MTU setting is used to display the OverSizePkts counters on the receiving trunk and client port
interfaces. Traffic of frame sizes up to 65535 bytes pass without any packet drops, from the client port
to the trunk port and vice versa irrespective of the MTU setting.
Figure 8-11 shows the TXP_MR_10G faceplate and block diagram.
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