No you cannot ping ii. No you cannot add it to the OSPF process. You can put it in DNS and it will resolve. If the DNS server allows you to add it. IOS will allow you to.
DNS just resolves hostname to L3 address. Typically it doesn't care what you make it to be. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Technical Instructor - IPexpert, Inc. Telephone: +1.810.326.1444 Cell: +1.248.504.7309 Fax: +1.810.454.0130 Mailto: <mailto:[email protected]> [email protected] Join our free online support and peer group communities: <http://www.ipexpert.com/communities> http://www.IPexpert.com/communities IPexpert - The Global Leader in Self-Study, Classroom-Based, Video On Demand and Audio Certification Training Tools for the Cisco CCIE R&S Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE Voice Lab and CCIE Storage Lab Certifications. From: [email protected] [mailto:[email protected]] On Behalf Of Syed Zaidi Sent: Thursday, October 08, 2009 4:27 AM To: [email protected] Subject: [OSL | CCIE_RS] OSPF Router-ids & DNS lookups Hi, As the subject of this mail suggests, I would like to know two things. 1. When a router-id is added to ospf, for ex: 224.0.0.0 or 239.255.255.255, will I be able to ping it from the network? this is a multicast address though.. 2. If we can't ping the above address and have added 223.255.255.255 as a router-id, and if we add it to the ospf process in this case will I be able to ping it? Hence adding this address to the DNS database for a name-lookup? The above addresses I mentioned is true for router-id configuration only. Thanks & Regards, Syed
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