Thanks for the reply. I just looked to see what arrived in NMS and no there's no firewall between the two.
N. On 3 Oct 2011, at 19:27, "[email protected]" <[email protected]> wrote: Hi, On 03-Oct-11 19:53, Nick Allen wrote: Am I right in thinking that since SNMP v3 informs (vs. traps) require an acknowledgement to say they've been received Yep. - presumably they should buffer up if they can't reach the netsight server? They are still UDP packets so the host probably tries again if there is no ack in a certain timeperiod. Maybe also a number of retries and timeouts are involved before the inform is lost? I'd have to check that. Is there some firewall involved in your setup? I've noticed this in our event log from a while ago, before we had informs set up correctly. <164>Sep 4 18:57:48 10.111.0.100 Emanate[1.SNMPagent]SNMPv3 Informs queue overflow = 1 ...so there must be a queue. Seems so ;-) I tried this by changing the NIC's in the Netsight VMWare virtual appliance to be in an isolated vSwitch. I then logged in via SSH into and out of our 2 x N7's and asked a colleague to do the same. Then I also telnetted into one of them. When I put the two Netsight NIC's back into the correct VLAN, I expected 5 informs, but only received 3. Did you sniff this using a packet filter, or did you just look at what arrived in NMS? Marki - --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] -- This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is proprietary, privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. Please notify us immediately of the error via e-mail to [email protected] and please delete the e-mail from your system, retaining no copies in any media. We appreciate your cooperation. --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
