topic Re: What are the ip addresses of a GRE keep alive packet in Routing https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680783#M372156 <P>Yes in my lab&nbsp;<BR />I use in one peer<BR />interface tunnel 0<BR />ip address 5.0.0.x<BR />tunnel source 1.1.1.1<BR />tunnel destination 4.4.4.4</P> Sat, 03 Sep 2022 18:28:53 GMT MHM Cisco World 2022-09-03T18:28:53Z What are the ip addresses of a GRE keep alive packet https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680772#M372152 <P>What are the ip addresses of a GRE keep alive packet?</P><P>I am referring to&nbsp; the internal and external IP headers</P> Sat, 03 Sep 2022 17:42:03 GMT https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680772#M372152 historicalswimming 2022-09-03T17:42:03Z Re: What are the ip addresses of a GRE keep alive packet https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680774#M372153 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lplplplpp.png" style="width: 999px;"><img src="https://community.cisco.com/t5/image/serverpage/image-id/161441i5BABA73AEB581427/image-size/large?v=v2&amp;px=999" role="button" title="lplplplpp.png" alt="lplplplpp.png" /></span>I run small lab and you can see the outer and inner,&nbsp;<BR />the inner is intersting, it show the tunnel source and destiantion but reverse.&nbsp;<BR />anyway hope this naswer you.</P> Sat, 03 Sep 2022 18:13:16 GMT https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680774#M372153 MHM Cisco World 2022-09-03T18:13:16Z Re: What are the ip addresses of a GRE keep alive packet https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680779#M372155 <P>is 4.4.4.4 and 1.1.1.1 the&nbsp; &nbsp;tunnel source and destination ip?</P> Sat, 03 Sep 2022 18:14:52 GMT https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680779#M372155 historicalswimming 2022-09-03T18:14:52Z Re: What are the ip addresses of a GRE keep alive packet https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680783#M372156 <P>Yes in my lab&nbsp;<BR />I use in one peer<BR />interface tunnel 0<BR />ip address 5.0.0.x<BR />tunnel source 1.1.1.1<BR />tunnel destination 4.4.4.4</P> Sat, 03 Sep 2022 18:28:53 GMT https://community.cisco.com/t5/routing/what-are-the-ip-addresses-of-a-gre-keep-alive-packet/m-p/4680783#M372156 MHM Cisco World 2022-09-03T18:28:53Z