Per-tenant quotas

To prevent system resources from being exhausted, Neutron supports per-tenant quota limits via the quotas extension. Every tenant is bound to a default quota that is set by the administrator in the Neutron configuration file:

[quotas]
# resource name(s) that are supported in quota features
# quota_items = network,subnet,port
 
# number of networks allowed per tenant, and minus means unlimited
# quota_network = 10
 
# number of subnets allowed per tenant, and minus means unlimited
# quota_subnet = 10
 
# number of ports allowed per tenant, and minus means unlimited
# quota_port = 50

# number of security groups allowed per tenant, and minus means unlimited
# quota_security_group = 10

# number of security group rules allowed per tenant, and minus means unlimited
# quota_security_group_rule = 100

To change the default settings, change the value and uncomment the line associated with the quota you want to change. Restarting neutron-server is necessary for changes to take effect...