on basically every 3750 stack in our network, if i tcpdump on any port, i will generally see tcp flows where neither the source nor destination is related to the machine upon which i'm tcpdump'ing.
we generally use stacks of WS-C3750G-48TS, WS-C3750G-48PS... running Advanced IP services, 12.2(37)SE. but i have the feeling i've seen this behaviour on other IOSs as well.
bizarrely i generally see only 1 foreign flow at a time... i.e. it's not like all traffic is instantly broadcast on all ports. i've also checked particular flows and found that there is active entries in the arp and mac tables, indicating that the switch knows exactly where the flow is supposed to go... but is somehow copying the flow to all other ports just for fun.
this behviour has occurred on systems without span config.
anyone have any ideas? has anyone seen anything similar?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.