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<p class="MsoNormal"><span style="font-size:11.0pt">Naveen,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> I see that when you remove router ospf under interface ip ospf area <area-id> goes away but authentication configuration stays. Though it would not impact your functionality as config for OSPF is removed
configuration stays.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Santosh P K<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Naveen K Suvarna <naveen.suvarna@broadcom.com><br>
<b>Date: </b>Thursday, 12 December 2019 at 3:51 PM<br>
<b>To: </b>Santosh P K <sapk@vmware.com>, "dev@lists.frrouting.org" <dev@lists.frrouting.org><br>
<b>Subject: </b>Re: Interface mode ospf config not getting deleted opon unconfiguring ospf router</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Santhosh,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks for the response. </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Below is my config and test. On area-1 interface
</span><span style="font-size:10.0pt;font-family:"Courier New"">Ethernet8 </span>
<span style="font-size:11.0pt">I have authentication command configured. If I unconfigure ospf router, I see that router interface
</span><span style="font-size:10.0pt;font-family:"Courier New"">Ethernet8</span><span style="font-size:11.0pt"> ip ospf configuration remains as it is.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Dut1(config-if)# do write ter ospfd</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Building configuration...</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Current configuration:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">frr version 7.2-sonic</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">frr defaults traditional</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">hostname Dut1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">interface Ethernet8</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ip ospf area 1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ip ospf authentication</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ip ospf authentication-key Ptext3</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">router ospf</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ospf router-id 192.0.1.2</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">line vty</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">end</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Dut1(config-if)# exit</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Dut1(config)#
<b>no router ospf</b></span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Dut1(config)# do write ter ospfd</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Building configuration...</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Current configuration:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">frr version 7.2-sonic</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">frr defaults traditional</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">hostname Dut1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Courier New"">interface Ethernet8</span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ip ospf authentication</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ip ospf authentication-key Ptext3</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">line vty</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">end</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Spine1(config)#</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Naveen</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Santosh P K <sapk@vmware.com><br>
<b>Date: </b>Thursday, 12 December 2019 at 3:20 PM<br>
<b>To: </b>"dev@lists.frrouting.org" <dev@lists.frrouting.org><br>
<b>Subject: </b>Re: Interface mode ospf config not getting deleted opon unconfiguring ospf router</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hello Naveen,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> I tried it locally with both 7.0 and 7.2. I can see that it is working fine. When router ospf is disabled configuration under interface goes away too. Is this your configuration or did you have more configuration
under interface? </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Santosh P K</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Naveen K Suvarna <naveen.suvarna@broadcom.com><br>
<b>Date: </b>Thursday, 12 December 2019 at 12:52 PM<br>
<b>To: </b>"dev@lists.frrouting.org" <dev@lists.frrouting.org><br>
<b>Subject: </b>Interface mode ospf config not getting deleted opon unconfiguring ospf router</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hi,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> In FRR 7.2 OSPF, When ospf router is Unconfigured, interface mode ospf configurations are not getting deleted from running config.
</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> Is this behavior designed with any specific reason ?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Example:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New""> router ospf</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New""> ospf rouer-id 1.1.1.1</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New""> interface Ethernet8</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New""> ip ospf area 0</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> With above config, if I issue command “no router ospf”, interface level ospf configs will not get removed/deleted.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Regards</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Naveen</span><o:p></o:p></p>
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