Release Notes for Cisco CRS Routers, IOS XR Release 6.2.3

Supported Packages and System Requirements

Feature Set Table

Memory

Caution

If you remove the media in which the software image or configuration is stored, the router may become unstable and fail.

Software Compatibility

Determining Installed Committed Packages

To determine the committed Cisco IOS XR Software packages installed on your router, log in to the router and enter the show install committed summary command

Software Features Introduced in Cisco IOS XR Software Release

Behavior Change Introduced in Cisco IOS XR Release 6.2.3

Locking a Running Configuration in NETCONF

For a NETCONF client to change a configuration in Cisco IOS XR, it is recommended for the client to acquire a lock to prevent simultaneous update from another NETCONF client or CLI session.

To acquire a configuration lock, the NETCONF client sends a RPC request to lock the running datastore. In Cisco IOS XR 6.1.x and previous releases, the RPC request candidate data-store was the target for acquiring the lock. But from release 6.2.x and later, the request running data-store must be sent to successfully lock the configuration.

Example: NETCONF request with running data-store as target to successfully lock a configuration:


<rpc message-id="101" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
       <lock>
         <target>
           <running/>                                                                                   
         </target>
       </lock>
</rpc>

Interface Name Modified

Prior to IOS XR Release 6.2.1, 1 Gigabit Ethernet and 10 Gigabit Ethernet interfaces were both named as TenGigE. Also, 40 Gigabit Ethernet and 100 Gigabit Ethernet interfaces were both named as HundredGigE. From Release 6.2.1 onwards, the names have been modified to:


Interface Type	Interface Name
1 Gigabit Ethernet	GigabitEthernet
10 Gigabit Ethernet	TenGigE
40 Gigabit Ethernet	FortyGigE
100 Gigabit Ethernet	HundredGigE

Note

After upgrading to Release 6.2.3, the old configurations applied to 1G and 40G interfaces will not be available. Therefore you must reconfigure the 1G and 40G interfaces using the new names.

New Hardware Introduced in Cisco IOS XR Software Release

No new hardware introduced in this release.

Firmware Support

To check the firmware code running on the , run the show fpd package command in admin mode.

Other Important Information

Country-specific laws, regulations, and licenses—In certain countries, use of these products may be prohibited and subject to laws, regulations, or licenses, including requirements applicable to the use of the products under telecommunications and other laws and regulations; customers must comply with all such applicable laws in the countries in which they intend to use the products.
Exceeding Cisco testing—If you intend to test beyond the combined maximum configuration tested and published by Cisco, contact your Cisco Technical Support representative to discuss how to engineer a large-scale configuration for your purpose.

Caveats

Caveats describe unexpected behavior in . Severity-1 caveats are the most critical caveats; severity-2 caveats are less critical.

Cisco IOS XR Caveats

Caveats Specific to the

Upgrading Cisco IOS XR Software

Troubleshooting

For information on troubleshooting Cisco IOS XR Software, see the and the

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