diff --git a/devstack-vm-gate.sh b/devstack-vm-gate.sh
index 1d6267ee..de863397 100755
--- a/devstack-vm-gate.sh
+++ b/devstack-vm-gate.sh
@@ -80,8 +80,8 @@ SYSLOG=False
 SCREEN_LOGDIR=$BASE/$LOCALRC_OLDNEW/screen-logs
 LOGFILE=$BASE/$LOCALRC_OLDNEW/devstacklog.txt
 VERBOSE=True
-FIXED_RANGE=10.1.0.0/24
-FIXED_NETWORK_SIZE=256
+FIXED_RANGE=10.1.0.0/20
+FIXED_NETWORK_SIZE=4096
 VIRT_DRIVER=$DEVSTACK_GATE_VIRT_DRIVER
 SWIFT_REPLICAS=1
 LOG_COLOR=False