Hi,
the IP addresses in 169.254.0.0/16 are link-local (see RFC 3927),
usually self-assigned by a PC configured for DHCP which did not receive
a DHCP reply. If theses addresses are active long enough, they can be
found with a compass search. They have to send some packets at the right
time to be picked up by the switch.
You can track them down individually by assigning a link-local IPv4
address to the respective VLAN interface, pinging the IP address to
track down (refreshes ARP table) and then get the MAC address from ARP
table entry for this IP. The MAC address should then show up in a fresh
compass search.
Remove the link-local IPv4 address from the VLAN interface afterwards.
Regards,
Erik
--
Dipl.-Inform. Erik Auerswald http://www.fg-networking.de/
E:[email protected] P:+49-631-4149988-0 M:+49-176-64228513
Gesellschaft für Fundamental Generic Networking mbH
Geschäftsführung: Volker Bauer, Jörg Mayer
Gerichtsstand: Amtsgericht Kaiserslautern - HRB: 3630
On 07/12/2012 08:56 PM, Walter Witkowski wrote:
I have the following showing up in the S4 core log
in Report on vlan 843, port tg.2.7
<165>Jul 11 20:28:28 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.52.83
in Report on vlan 843, port tg.2.7
<165>Jul 11 20:33:07 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.52.83
in Report on vlan 843, port tg.2.7
<165>Jul 11 20:46:52 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.52.83
in Report on vlan 843, port tg.2.7
<165>Jul 12 03:21:05 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.132.1
39 in Report on vlan 741, port tg.2.2
<165>Jul 12 07:00:40 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.198.9
8 in Report on vlan 843, port tg.2.7
<165>Jul 12 07:09:45 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.65.77
in Report on vlan 843, port tg.2.7
<165>Jul 12 07:17:16 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.231.1
84 in Report on vlan 741, port tg.2.2
<165>Jul 12 07:30:59 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.126.1
37 in Report on vlan 843, port tg.2.7
<165>Jul 12 07:45:29 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.79.14
2 in Report on vlan 741, port tg.2.2
<165>Jul 12 08:18:39 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.207.1
9 in Report on vlan 742, port tg.2.6
<165>Jul 12 08:30:21 172.31.0.21 IPmcast[2]IGMP: Invalid source IP 169.254.251.5
Netsight does not give results for compass searches on these IP's. Anyone have
a suggestion as to how this source may be located.
thanks
Walt Witkowski Primary Network Specialist - Office of Information Technology -
Delaware County Community College
ellucianTM
610-359-5017(phone) / 610-359-4123 (fax) / 856-217-4430(cell)
[email protected]
[email protected]
www.ellucian.com
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