Is it specifically Ping or is it just ICMP? Could it be Path MTU discovery?
http://en.wikipedia.org/wiki/Path_MTU_Discovery On Tue, Aug 16, 2011 at 9:25 PM, Walter Witkowski <[email protected]> wrote: > The address we see in the firewall monitor is the S4 interface ip which > is a /30 between the S4 and the firewall. The S4 is pinging various ip > addresses that are not part of our internal network. The S4 is pointed to > the firewall as the default gateway via OSPF. I haven't captured any > traffic yet or looked up the destination addresses on the internet to know > what the normal traffic is. Just trying to understand what causes the S4 to > ping the off network addresses. > > thanks > walt > > > > >>> "Lou H. Goddard" <[email protected]> 8/16/2011 3:14 PM >>> > > More details please. > > Are the IP addresses found in your configuration any where? > Who owns the IP address? > What other traffic ends up at those destination addresses? > > That may give us more of a clue. > > Thanks, > Lou Goddard > Network Engineer > 302-552-8053 > [email protected] > > ------------------------------ > *From: *Walter Witkowski <[email protected]> > *Sent: *Tue, 8/16/2011 2:42pm > *To: *Enterasys Customer Mailing List <[email protected]> > *Subject: *[enterasys] Router pinging > > Hi all, > > Wondering if someone can answer the following. > 1) What causes a router to ping an address? Looking at a traffic monitor > built into our FW it shows the WAN port ip address of our router pinging > various internet addresses. Users on all subnets are set with a gateway > address and proxy arp is on. Does the router ping to determine the > destination address is alive before it responds to an arp? > > thanks in advance > walt w > > > *Walt Witkowski *Primary Network Specialist - Sungard Higher Education > Office of Information Technology - Delaware County Community College > 610-359-5017(phone) / 610-359-4123 (fax)/856-217-4430(cell) > [email protected] > > > - --To unsubscribe from enterasys, send email to [email protected] with > the body: unsubscribe enterasys [email protected] > > ------------------ CONFIDENTIALITY NOTICE --------------- > > This message, including any attachments, is for the sole use of the > intended recipient(s) and may contain privileged confidential information > protected by law. Any unauthorized review, use, disclosure or distribution > of this message is prohibited. If you are not the intended recipient, > please > contact the sender by reply e-mail and destroy all copies of this message. > > ------------------ CONFIDENTIALITY NOTICE --------------- > > > - --To unsubscribe from enterasys, send email to [email protected] with > the body: unsubscribe enterasys [email protected] > > > - --To unsubscribe from enterasys, send email to [email protected] with > the body: unsubscribe enterasys [email protected] > > -- This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is proprietary, privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. Please notify us immediately of the error via e-mail to [email protected] and please delete the e-mail from your system, retaining no copies in any media. We appreciate your cooperation. --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
