=====IOS-XR Notes=====

====Troubleshooting=====
  * To view installed components:
<code>admin show inventory</code>
  * To view installed linecards and their status:
<code>admin show platform</code>
  * To view fpd (Field Programmable Devices) versions for each linecard:
  * If the Upg/Dng? column contains Yes, then upgrade that fpd.
<code>admin show hw-module fpd location all</code>
  * To upgrade an fpd's rommon at location 0/0/CPU0, for example:
<code>admin upgrade hw-module fpd rommon location 0/0/CPU0</code>
  * After an upgrade is complete, then reload the linecard:
<code>admin hw-module location 0/0/CPU0 reload</code>


====Release Notes=====
===Version 7.0.1 and later====
  * From Cisco IOS XR Software Release 7.0.1 and later, the SSH host-key pairs are auto-generated at the time of router boot up. Hence you need not perform steps 5 to 7 to generate the host keys explicitly. See, Automatic Generation of SSH Host-Key Pairs for details.
    * [[https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r7-0/system-security/configuration/guide/b-system-security-cg-asr9000-70x/b-system-security-cg-asr9000-70x_chapter_01001.html|IOS-XR Security Guide]]
    * Don't need to type <code>crypto key generate rsa [usage keys | general-keys] [keypair-label]</code>