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<p class="MsoNormal"><span style="color:#1F497D">Hi Mihai,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Have you looked into object tracking?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">This will work if the route state changes and is removed from the routing table.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">So if the route is no longer present it will trigger for sure.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I admit I have not tried to see if it would trigger on a change from peer 1 to peer 2, as the route is still “up”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">This functionality is built into XR and can generate syslog events directly from the router without any additional software.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-5/system-management/configuration/guide/b-system-management-cg-asr9000-65x/b-system-management-cg-asr9000-65x_chapter_0110.html">https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-5/system-management/configuration/guide/b-system-management-cg-asr9000-65x/b-system-management-cg-asr9000-65x_chapter_0110.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Brian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> NANOG <nanog-bounces+b.turnbow=twt.it@nanog.org>
<b>On Behalf Of </b>Sandoiu Mihai<br>
<b>Sent:</b> Thursday, January 6, 2022 11:35 AM<br>
<b>To:</b> nanog@nanog.org<br>
<b>Subject:</b> BGP Route Monitoring<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Hi<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">I
</span><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">am looking for a route monitoring product that does the following:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">-checks if a specific bgp route from a specific neighbor is present the BGP table (in some vrf, not necessarily internet routed vrf) of
an ASR9K running IOS XR <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">-sends a syslog message or an alarm if the route goes missing<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">The use case is the following: we are receiving same routes over 2 or more bgp peerings, due to best route we cannot really see at the moment if one
of the routes ceased to be received over a certain peering.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Alternative approach: a product that measures the number of bgp received prefixes from a certain peer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Do you know of such product that is readily available and does not require ssh sessions to the routers and parsing the outputs?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">I am trying to find a solution that does not require much scripting or customization.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Many thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt;font-family:"Segoe UI Semilight",sans-serif;color:black">Mihai<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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