Greetings! We have a Citrix server on a Dell PE-1950. It has a pair of on-board Broadcom gigabit NICs.
A few months ago I was instructed to see if I could team the NICs for purposes of increased band width and redundancy. SO, off to the Dell site to get the latest and greatest Broadcom drivers and utilities... We have a VoIP system here. Our phones are all Polycom units, most of which are i430s. Recently we needed more phones. Polycom had discontinued the i430, so we got some (3) i335s. However, when we installed them, they would all display "Duplicate IP" and show the IP address of the phone. The phone would function properly. We could push just about any button on the phone (ie, speaker, headset, one of the soft keys, one of the other function buttons), and the display would go back to displaying the date and time. However, within a few minutes, the "Duplicate IP" message would reappear... Some packet captures indicated that one of the NICs on the Citrix server was sending out ARP requests. It was these ARP requests which caused the i335s (not the i430, but that's not the issue here) to display the "Duplicate IP" message. I should mention that an examination of the DHCP lease tables indicated no duplicate IP addresses in either sub-net (either the data subnet nor the VoIP subnet). The Citrix server has a fixed IP address. However, again, it seems one of the two NICs in the teamed pair (using the Broadcom Virtual Network Adapter software) continues to send out ARP requests. Unplugging the NIC which has the MAC address which shows in the packet captures has solved the phone display issue. Now, how to plug that NIC back into our network and restore the bandwidth...? I am thinking something crazy, like reserving a lease for that NIC in the data sub-net. However, this may or may not make things far worse. Any suggestions (other than forgetting about the teaming)? I should add that we have other Dell PE servers with their NICs teamed and using the Broadcom Virtual Network Adapter, and none of them are misbehaving like this. Thanks... -- Richard D. McClary Systems Administrator, Information Technology Group ASPCA® 1717 S. Philo Rd, Ste 36 Urbana, IL 61802 [email protected] P: 217-337-9761 C: 217-417-1182 F: 217-337-9761 www.aspca.org The information contained in this e-mail, and any attachments hereto, is from The American Society for the Prevention of Cruelty to Animals® (ASPCA ®) and is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying or use of the contents of this e-mail, and any attachments hereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify me by reply email and permanently delete the original and any copy of this e-mail and any printout thereof. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
