12-19-2003 03:59 AM - edited 03-02-2019 12:27 PM
We use a Cat 3550
as the Gbit backbone of our network
When doing analysis of from the NIC ofmy PC it seems to be sending out alot of broadcast(arp) 45-50% of traffic
It is not configed to run as the DHCP server.
Can anyone tell me if it should be broadcasting?
12-19-2003 04:17 AM
What is it arping for? Is it sequential IP addresses constantly? If it is I would suspect a Virus or over-active Management Software. It could also be bad configuration - i.e. your PC is configured to access certain machines that don't exist??
Andy
12-19-2003 04:26 AM
Not sure why its arping? (why it is my question)
it is seq broadcasting!
ie. ARP protocol who has 4.5.x.100 (using ethereal)
ARP protocol who has 4.5.x.101
how could it be a bad config?
thanks
Conor
12-19-2003 08:41 AM
If the arp requests are constantly going up:
i.e. who has 4.5.x.100
who has 4.5.x.102
who has 4.5.x.103
etc
who has 4.5.x.254
Then I would suggest either a Virus or Management software trying to scan for new devices (more likely to be a virus as you would know you are running management software?).
Bad config - I mean your PC is somehow configure to access some IP devices (for whatever reason I don't know) and it is trying to contact them. Your PC will have to ARP for anything on its local subnet that it needs to communicate with before it can establish a connection as it must resolve their MAC addresses.
Andy
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