arp222 -- Discussion of issues associated with large amount of virtual machines being introduced in data centers and virtual hosts introduced by Cloud Computing.
About arp222	English (USA)
This list discusses issues associated with large amount of virtual hosts in data centers and Cloud Computing service. As virtual machines, which allow one physical server to support multiple hosts (20, 30, or hundreds of), are introduced to Data Center, the number of hosts in a data center can grow dramatically. Cloud Computing service also introduces large amount of virtual hosts in addition to virtual subnets. The virtual subnet for Cloud Computing service could allow virtual hosts within one virtual subnet to be located in multiple sites. This rapid growth of virtual hosts could tremendously impact to networks and servers. One huge issue is frequent ARP requests from hosts. All hosts send out frequent ARP requests due to their cache being aged out in minutes. With tens of thousands of hosts (each with a distinct MAC address) in one Data Center, the amount of ARP packets per second is potentially in the 1,000 to 10,000/second. This rate imposes tremendous computational burden on many hosts. Issues associated with Virtual Subnet for Cloud Computing include proper identity for virtual hosts and virtual subnets, protocol to resolve physical IP&MAC addresses from host identity, and potential virtual hosts’ location information. To see the collection of prior postings to the list, visit the arp222 Archives.
Using arp222
To post a message to all the list members, send email to arp222@ietf.org. You can subscribe to the list, or change your existing subscription, in the sections below.
Subscribing to arp222
Subscribe to arp222 by filling out the following form. You will be sent email requesting confirmation, to prevent others from gratuitously subscribing you. This is a private list, which means that the list of members is not available to non-members. Your email address:   Your name (optional):   You may enter a privacy password below. This provides only mild security, but should prevent others from messing with your subscription. Do not use a valuable password as it will occasionally be emailed back to you in cleartext. If you choose not to enter a password, one will be automatically generated for you, and it will be sent to you once you've confirmed your subscription. You can always request a mail-back of your password when you edit your personal options. Once a month, your password will be emailed to you as a reminder. Pick a password:   Reenter password to confirm:   Which language do you prefer to display your messages? English (USA)   Would you like to receive list mail batched in a daily digest? No Yes
arp222 Subscribers
(The subscribers list is only available to the list members.) Enter your address and password to visit the subscribers list: Address: Password:    To unsubscribe from arp222, get a password reminder, or change your subscription options enter your subscription email address: If you leave the field blank, you will be prompted for your email address