diff --git a/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/DefaultKubevirtNetwork.java b/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/DefaultKubevirtNetwork.java
new file mode 100644
index 0000000..dc221ab
--- /dev/null
+++ b/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/DefaultKubevirtNetwork.java
@@ -0,0 +1,248 @@
+/*
+ * Copyright 2021-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.kubevirtnetworking.api;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
+import org.onlab.packet.IpAddress;
+
+import java.util.Objects;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static org.onosproject.kubevirtnetworking.api.KubevirtNetwork.Type.FLAT;
+
+/**
+ * Default implementation class of kubevirt network.
+ */
+public final class DefaultKubevirtNetwork implements KubevirtNetwork {
+
+    private static final String NOT_NULL_MSG = "Network % cannot be null";
+
+    private final String networkId;
+    private final Type type;
+    private final String name;
+    private final Integer mtu;
+    private final String segmentId;
+    private final IpAddress gatewayIp;
+    private final String cidr;
+    private final Set<KubevirtHostRoute> hostRouts;
+    private final KubevirtIpPool ipPool;
+
+    /**
+     * Default constructor.
+     *
+     * @param networkId         network identifier
+     * @param type              type of network
+     * @param name              network name
+     * @param mtu               network MTU
+     * @param segmentId         segment identifier
+     * @param gatewayIp         gateway IP address
+     * @param cidr              CIDR of network
+     * @param hostRouts         a set of host routes
+     * @param ipPool            IP pool
+     */
+    public DefaultKubevirtNetwork(String networkId, Type type, String name,
+                                  Integer mtu, String segmentId, IpAddress gatewayIp,
+                                  String cidr, Set<KubevirtHostRoute> hostRouts,
+                                  KubevirtIpPool ipPool) {
+        this.networkId = networkId;
+        this.type = type;
+        this.name = name;
+        this.mtu = mtu;
+        this.segmentId = segmentId;
+        this.gatewayIp = gatewayIp;
+        this.cidr = cidr;
+        this.hostRouts = hostRouts;
+        this.ipPool = ipPool;
+    }
+
+    @Override
+    public String networkId() {
+        return networkId;
+    }
+
+    @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public String name() {
+        return name;
+    }
+
+    @Override
+    public Integer mtu() {
+        return mtu;
+    }
+
+    @Override
+    public String segmentId() {
+        return segmentId;
+    }
+
+    @Override
+    public IpAddress gatewayIp() {
+        return gatewayIp;
+    }
+
+    @Override
+    public String cidr() {
+        return cidr;
+    }
+
+    @Override
+    public Set<KubevirtHostRoute> hostRouts() {
+        return ImmutableSet.copyOf(hostRouts);
+    }
+
+    @Override
+    public KubevirtIpPool ipPool() {
+        return ipPool;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        DefaultKubevirtNetwork that = (DefaultKubevirtNetwork) o;
+        return networkId.equals(that.networkId) && type == that.type &&
+                name.equals(that.name) && mtu.equals(that.mtu) &&
+                gatewayIp.equals(that.gatewayIp) &&
+                cidr.equals(that.cidr) && hostRouts.equals(that.hostRouts) &&
+                ipPool.equals(that.ipPool);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(networkId, type, name, mtu, segmentId, gatewayIp,
+                cidr, hostRouts, ipPool);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("networkId", networkId)
+                .add("type", type)
+                .add("name", name)
+                .add("mtu", mtu)
+                .add("segmentId", segmentId)
+                .add("gatewayIp", gatewayIp)
+                .add("cidr", cidr)
+                .add("hostRouts", hostRouts)
+                .add("ipPool", ipPool)
+                .toString();
+    }
+
+    /**
+     * Returns new builder instance.
+     *
+     * @return kubevirt port builder
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static final class Builder implements KubevirtNetwork.Builder {
+
+        private String networkId;
+        private Type type;
+        private String name;
+        private Integer mtu;
+        private String segmentId;
+        private IpAddress gatewayIp;
+        private String cidr;
+        private Set<KubevirtHostRoute> hostRouts;
+        private KubevirtIpPool ipPool;
+
+        @Override
+        public KubevirtNetwork build() {
+            checkArgument(networkId != null, NOT_NULL_MSG, "networkId");
+            checkArgument(type != null, NOT_NULL_MSG, "type");
+            checkArgument(name != null, NOT_NULL_MSG, "name");
+            checkArgument(mtu != null, NOT_NULL_MSG, "mtu");
+            checkArgument(gatewayIp != null, NOT_NULL_MSG, "gatewayIp");
+            checkArgument(cidr != null, NOT_NULL_MSG, "cidr");
+            checkArgument(ipPool != null, NOT_NULL_MSG, "ipPool");
+
+            if (type != FLAT) {
+                checkArgument(segmentId != null, NOT_NULL_MSG, "segmentId");
+            }
+
+            return new DefaultKubevirtNetwork(networkId, type, name, mtu, segmentId,
+                    gatewayIp, cidr, hostRouts, ipPool);
+        }
+
+        @Override
+        public Builder networkId(String networkId) {
+            this.networkId = networkId;
+            return this;
+        }
+
+        @Override
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        @Override
+        public Builder type(Type type) {
+            this.type = type;
+            return this;
+        }
+
+        @Override
+        public Builder mtu(Integer mtu) {
+            this.mtu = mtu;
+            return this;
+        }
+
+        @Override
+        public Builder segmentId(String segmentId) {
+            this.segmentId = segmentId;
+            return this;
+        }
+
+        @Override
+        public Builder gatewayIp(IpAddress ipAddress) {
+            this.gatewayIp = ipAddress;
+            return this;
+        }
+
+        @Override
+        public Builder cidr(String cidr) {
+            this.cidr = cidr;
+            return this;
+        }
+
+        @Override
+        public Builder ipPool(KubevirtIpPool ipPool) {
+            this.ipPool = ipPool;
+            return this;
+        }
+
+        @Override
+        public Builder hostRoutes(Set<KubevirtHostRoute> hostRoutes) {
+            this.hostRouts = hostRoutes;
+            return this;
+        }
+    }
+}