This release introduces the following new hardware:

• Cisco NCS-55A2-MOD-HX-S—Temperature-hardened, conformal coated, fixed port, high density, two rack unit form-factor router that supports 24 SFP/SFP+ ports capable of supporting one Gigabit Ethernet or 10 Gigabit Ethernet, and 16 SFP/SFP+/SFP28 ports capable of supporting one Gigabit Ethernet, 10 Gigabit Ethernet, or 25 Gigabit Ethernet. The router also supports up to 2 modular port adapters (MPA).

  For more information, see the Hardware Installation Guide for Cisco NCS 5500 Series Fixed-Port Routers and the Data Sheet.

• Cisco NC55-MPA-2TH-HX-S— This 2-port 100GE/200GE MPA provides 2 ports for CFP2-DCO transceivers. The temperature-hardened conformal-coated NC55-MPA-2TH-HX-S MPA operates within industrial temperature range when installed in the temperature-hardened routers.

  For more information, see the Hardware Installation Guide for Cisco NCS 5500 Series Fixed-Port Routers and the Data Sheet.

• NC55-A2-FAN-L-FW— This is a latch type fan tray.

  For more information, see the Hardware Installation Guide for Cisco NCS 5500 Series Fixed-Port Routers and the Data Sheet.

This table lists the Cisco IOS XR Software feature set matrix (packages) with associated filenames.

Log in to the router and enter the show version command:

RP/0/RP0/CPU0:router# show version

Cisco IOS XR Software, Version 6.5.2
Copyright (c) 2013-2019 by Cisco Systems, Inc.

Build Information:
 Built By     : <username>
 Built On     : Wed Jan 30 18:42:12 PST 2019
 Built Host   : iox-ucs-027
 Workspace    : /auto/srcarchive13/prod/6.5.2/ncs5500/ws
 Version      : 6.5.2
 Location     : /opt/cisco/XR/packages/

cisco NCS-5500 () processor
System uptime is 2 hours 38 minutes

Caveats describe unexpected behavior in Cisco IOS XR Software releases. Severity-1 caveats are the most critical caveats; severity-2 caveats are less critical.

• The total number of bridge-domains (2*BDs) and GRE tunnels put together should not exceed 1518.

  Here the number 1518 represents the multi-dimensional scale value.

• MLD Snooping is not supported until Cisco IOS XR Release 6.5.3. The support will be available in future releases.

• The SRLB (Segment Routing Local Block) inconsistency and allocation failure error is observed when a non-default values of SRLB and SRGB (Segment Routing Global Block) are configured and a commit-replace is followed by configuration re-application. This issue impacts data forwarding as the SR labels are not properly programmed.

  To prevent the issue, use the clear segment-routing local-block discrepancy all command to clear the label conflicts.

• The offline diagnostics functionality is not supported in NCS 5500 platform. Therefore, the hw-module service offline location command will not work. However, you can use the (sysadmin)# hw-module shutdown location command to bring down the LC.

• The warning message that the smart licensing evaluation period has expired is displayed in the console every hour. There is, however, no functionality impact on the device. The issue is seen on routers that do not have the Flexible Consumption licensing model enabled. To stop the repetitive messaging, register the device with the smart licensing server and enable the Flexible Consumption model. Later load a new registration token.

  To register the device with the smart licensing server, follow the instructions provided in this link: Register and Activate Your Device.

  However, if you do not want to enable the Flexible Consumption licensing model then install the CSCvk45026 SMU to stop the repetitive messages.