[afnog] Discover IPs Connected to Cisco Switch

Eliufoo C. Mahinda venomius at yahoo.com
Fri Dec 4 13:11:40 UTC 2009


Thanks for the list below. Are you familiar with any free tools? Either linux or windows.
--- On Fri, 12/4/09, daniel Onwude <igevioya at gmail.com> wrote:

From: daniel Onwude <igevioya at gmail.com>
Subject: Re: [afnog] Discover IPs Connected to Cisco Switch
To: "Eliufoo C. Mahinda" <venomius at yahoo.com>
Cc: "Afnog Mailing List" <afnog at afnog.org>
Date: Friday, December 4, 2009, 1:07 PM

You can use solarwinds or similar tools (any tool that can discover ur
network should be able to do this)

Quite a lot of free tools out there eg

http://www.freedownloadmanager.org/downloads/mac_address_ip_info/
http://www.netscantools.com/spmapmain.html
*http://www.manageengine.com/products/oputils/switch-port-mapper.html*
http://software.informer.com/getfree-mapping-of-ip-to-hostname-on-mac/

Rgds
dan

Eliufoo C. Mahinda wrote:
> Hi Dan,
>
> thanks for the feedback.
>
> It a L2 switch. However, the method for show mac-add and show ip arp
> command will require me to track and associate individual mac address
> to a IP address.
>
> That can do this automatically?
>
> --- On *Fri, 12/4/09, daniel Onwude /<igevioya at gmail.com>/* wrote:
>
>
>     From: daniel Onwude <igevioya at gmail.com>
>     Subject: Re: [afnog] Discover IPs Connected to Cisco Switch
>     To: "Eliufoo C. Mahinda" <venomius at yahoo.com>
>     Cc: "Afnog Mailing List" <afnog at afnog.org>
>     Date: Friday, December 4, 2009, 11:05 AM
>
>     This depends on the kind of switch you have.
>
>     A L2 switch does not have any knowledge of IPs (so you wont be able to
>     see the IP's connected to the switch)
>
>     In this case use the mac address table (sh mac-add) to discover
>     all the
>     mac connected the the switch
>
>     The use the arp table of the terminating L3 device to resolve the
>     IP to mac.
>
>     Rgds
>     dan
>
>     Eliufoo C. Mahinda wrote:
>     > Hi Team,
>     >
>     > How can i discover IPs address that are connected to a Cisco switch?
>     >
>     > Thanks,
>     > Elly
>     >
>     >
>     >
>     ------------------------------------------------------------------------
>     >
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