<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I carry public Internet routing in a vrf, and my loopback and internal IGP interfaces are in the master/default vrf<br><br><div dir="ltr">Aaron</div><div dir="ltr"><br><blockquote type="cite">On Oct 5, 2023, at 12:24 PM, Javier Gutierrez <GutierrezJ@westmancom.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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Hi, </div>
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I have recently encountered some operational differences at my new organization that are not what I have been exposed to before, where the loopback of the core network devices is being set from RFC1918 while on the global routing table. I'm sure this is not
a major issue but I have mostly seen that ISPs use global IPs for loopbacks on devices that would and hold global routing.</div>
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My question is, what is the most used or recommended way to do this, if I continue to use RFC1918 I will save some very much desired public address space, but would this come back to bite me in the future?</div>
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<p class="MsoAutoSig"><span lang="EN-US" style="mso-ansi-language:EN-US">Kind regards,<o:p></o:p></span></p>
<p class="MsoAutoSig"><span lang="EN-US" style="mso-ansi-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Arial",sans-serif">Javier Gutierrez,<o:p></o:p></span></b></p>
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