I have noticed that on the Vlan1 interface of one of my switches there are giants being received (about 1 each second). I have the impression the broadcasts are incrementing at the same rate as the giants.
The interface output:
#sh int vlan1
VLAN1 is up, line protocol is down
Hardware is CPU Interface, address is 0006.d792.4cc0 (bia 0006.d792.4cc0)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
First they are occuring in your native VLAN (I assume). They could be sent by a host with MTU set to larger values than 1500. F.e. GE interfaces have MTU sizes up to 9216 Bytes supported and sometimes servers are using larger values to improve throughput.
Second you might have MPLS enabled between two routers connected to the switch, which also could result in giants.
The probability of option 1) is considerably higher than the one for option 2).
So the first thing I would do is to check MTU settings of attached hosts (especially servers), because this is a standalone switch.
What you explain with regard to GE interfaces makes sense to me.
I am wondering though. Say a server using a GE interface is connected to the FE interface of this switch and the server is actually sending giants. Why would this show up on my VLAN1 interface and not on the respective port?
There is a bug with CEF for the CAT 6500. Please upgrade to 12.2(18)SXF for the fix. I am sure there are other code versions that will have the fix also. Make sure no user data is being sent over VLAN 1 as this should be reserved for ONLY switch management traffic.
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.