diff --git a/bin/env b/bin/env
index da600287e68bddb6ffc6c0ac67593c8e2b3eac49..a8f59cdc9dc3423fcf2c6d698465454b4b9b9e7d 100644
--- a/bin/env
+++ b/bin/env
@@ -1,4 +1,4 @@
 export BFAHOME=${HOME}/bfa
-export BFANETWORKID=47525974938
 export BFANETWORKDIR="${BFAHOME}/network"
+export BFANETWORKID=$(cat ${BFANETWORKDIR}/network_id)
 PATH=${PATH}:${BFAHOME}/bin:${HOME}/bin
diff --git a/bin/env.testnet b/bin/env.testnet
deleted file mode 100644
index 438e10c622c8f8074db61436c5384c7888984b63..0000000000000000000000000000000000000000
--- a/bin/env.testnet
+++ /dev/null
@@ -1,4 +0,0 @@
-export BFAHOME=${HOME}/bfa
-export BFANETWORKID=5445
-export BFANETWORKDIR="${BFAHOME}/network"
-PATH=${PATH}:${BFAHOME}/bin:${HOME}/bin
diff --git a/network/network_id b/network/network_id
new file mode 100644
index 0000000000000000000000000000000000000000..18c45358db730aa704b9a7a413f84d70c3b04ea2
--- /dev/null
+++ b/network/network_id
@@ -0,0 +1,2 @@
+47525974938
+