diff --git a/src/urma/lib/urma/core/include/urma_cmd.h b/src/urma/lib/urma/core/include/urma_cmd.h
index b6a66214590603f85d5b1dcb84c3aceb7b35828c..5dda3e6fd18600c253c5e098d50e6ad9b557b445 100644
--- a/src/urma/lib/urma/core/include/urma_cmd.h
+++ b/src/urma/lib/urma/core/include/urma_cmd.h
@@ -39,6 +39,9 @@ typedef enum urma_core_cmd {
     URMA_CORE_CMD_SET_EID_MODE,
     URMA_CORE_SET_NS_MODE,
     URMA_CORE_SET_DEV_NS,
+    URMA_CORE_SET_DEV_SHARING_MODE,
+    URMA_CORE_EXPOSE_DEV_NS,
+    URMA_CORE_UNEXPOSE_DEV_NS,
     URMA_CORE_GET_TOPO_INFO,
 } urma_core_cmd_t;
 
diff --git a/src/urma/tools/urma_admin/admin_cmd_dev.c b/src/urma/tools/urma_admin/admin_cmd_dev.c
index 965ed9783fc3446a49e14a35af75dcbed543a274..6e9f34d8c4d7363f2e94dd1280ad6c81dddb1583 100644
--- a/src/urma/tools/urma_admin/admin_cmd_dev.c
+++ b/src/urma/tools/urma_admin/admin_cmd_dev.c
@@ -27,8 +27,23 @@ static int cmd_dev_usage(admin_config_t *cfg)
 
 static int cmd_dev_set_sharing(admin_config_t *cfg)
 {
-    printf("TODO set sharing %s\n", cfg->dev_name);
-    return 0;
+    int ret;
+
+    if ((ret = pop_arg_sharing(cfg)) != 0) {
+        return ret;
+    }
+
+    struct nl_msg *msg = admin_nl_alloc_msg(URMA_CORE_SET_DEV_SHARING_MODE, 0);
+    if (msg == NULL) {
+        return -ENOMEM;
+    }
+
+    admin_nl_put_string(msg, UBCORE_ATTR_DEV_NAME, cfg->dev_name);
+    admin_nl_put_u8(msg, UBCORE_ATTR_NS_MODE, cfg->ns_mode);
+    ret = admin_nl_send_recv_msg_default(msg);
+    admin_nl_free_msg(msg);
+
+    return ret;
 }
 
 static int cmd_dev_set_ns(admin_config_t *cfg)
@@ -86,8 +101,26 @@ static int cmd_dev_expose(admin_config_t *cfg)
         return ret;
     }
 
-    printf("TODO expose %s to %s\n", cfg->dev_name, cfg->ns);
-    return 0;
+    int ns_fd = admin_get_ns_fd(cfg->ns);
+    if (ns_fd < 0) {
+        (void)printf("Failed to get ns fd, ns %s.\n", cfg->ns);
+        return ns_fd;
+    }
+
+    struct nl_msg *msg = admin_nl_alloc_msg(URMA_CORE_EXPOSE_DEV_NS, 0);
+    if (msg == NULL) {
+        ret = -ENOMEM;
+        goto close_ns_fd;
+    }
+
+    admin_nl_put_string(msg, UBCORE_ATTR_DEV_NAME, cfg->dev_name);
+    admin_nl_put_u32(msg, UBCORE_ATTR_NS_FD, ns_fd);
+    ret = admin_nl_send_recv_msg_default(msg);
+    admin_nl_free_msg(msg);
+
+close_ns_fd:
+    (void)close(ns_fd);
+    return ret;
 }
 
 static int cmd_dev_unexpose(admin_config_t *cfg)
@@ -100,8 +133,26 @@ static int cmd_dev_unexpose(admin_config_t *cfg)
         return ret;
     }
 
-    printf("TODO unexpose %s to %s\n", cfg->dev_name, cfg->ns);
-    return 0;
+    int ns_fd = admin_get_ns_fd(cfg->ns);
+    if (ns_fd < 0) {
+        (void)printf("Failed to get ns fd, ns %s.\n", cfg->ns);
+        return ns_fd;
+    }
+
+    struct nl_msg *msg = admin_nl_alloc_msg(URMA_CORE_UNEXPOSE_DEV_NS, 0);
+    if (msg == NULL) {
+        ret = -ENOMEM;
+        goto close_ns_fd;
+    }
+
+    admin_nl_put_string(msg, UBCORE_ATTR_DEV_NAME, cfg->dev_name);
+    admin_nl_put_u32(msg, UBCORE_ATTR_NS_FD, ns_fd);
+    ret = admin_nl_send_recv_msg_default(msg);
+    admin_nl_free_msg(msg);
+
+close_ns_fd:
+    (void)close(ns_fd);
+    return ret;
 }
 
 int admin_cmd_dev(admin_config_t *cfg)
diff --git a/src/urma/tools/urma_admin/admin_netlink.h b/src/urma/tools/urma_admin/admin_netlink.h
index f7cde4dc6cd7a5822516d563a24162d4dc371712..0cdec018a8311361f030c63c890808cf85f7dd25 100644
--- a/src/urma/tools/urma_admin/admin_netlink.h
+++ b/src/urma/tools/urma_admin/admin_netlink.h
@@ -57,7 +57,16 @@ static inline int admin_nl_put_u32(struct nl_msg *msg, int attr, uint32_t value)
 {
     int ret = nla_put_u32(msg, attr, value);
     if (ret != 0) {
-        printf("Failed to put string attribute %d, ret: %d\n", attr, ret);
+        printf("Failed to put u32 attribute %d, ret: %d\n", attr, ret);
+    }
+    return ret;
+}
+
+static inline int admin_nl_put_u8(struct nl_msg *msg, int attr, uint8_t value)
+{
+    int ret = nla_put_u8(msg, attr, value);
+    if (ret != 0) {
+        printf("Failed to put u8 attribute %d, ret: %d\n", attr, ret);
     }
     return ret;
 }
diff --git a/src/urma/tools/urma_admin/admin_parameters.c b/src/urma/tools/urma_admin/admin_parameters.c
index ac78d005f93f898d28ca840b5400d88125a512b3..befec28d9b4888aa8322cade5594c64e243c3d5f 100644
--- a/src/urma/tools/urma_admin/admin_parameters.c
+++ b/src/urma/tools/urma_admin/admin_parameters.c
@@ -295,6 +295,25 @@ static int admin_parse_ns(char *buf, tool_config_t *cfg)
     return 0;
 }
 
+static int admin_parse_sharing(char *buf, tool_config_t *cfg)
+{
+    if (buf == NULL) {
+        (void)printf("Invalid argument.\n");
+        return -EINVAL;
+    }
+
+    // 先复用ns_mode
+    if (strcmp(buf, "on") == 0) {
+        cfg->ns_mode = 1;
+    } else if (strcmp(buf, "off") == 0) {
+        cfg->ns_mode = 0;
+    } else {
+        URMA_ADMIN_LOG("Invalid sharing mode:%s, expect 'on' or 'off'.\n", buf);
+        return -1;
+    }
+    return 0;
+}
+
 int admin_parse_args(int argc, char *argv[], tool_config_t *cfg)
 {
     int ret = 0;
@@ -398,6 +417,17 @@ int pop_arg_ns(admin_config_t *cfg)
     return ret;
 }
 
+int pop_arg_sharing(admin_config_t *cfg)
+{
+    char *arg = pop_arg(cfg);
+    if (arg == NULL) {
+        printf("No sharing mode specified.\n");
+        return -EINVAL;
+    }
+    int ret = admin_parse_sharing(arg, cfg);
+    return ret;
+}
+
 int pop_arg_eid(admin_config_t *cfg)
 {
     char *arg = pop_arg(cfg);
diff --git a/src/urma/tools/urma_admin/admin_parameters.h b/src/urma/tools/urma_admin/admin_parameters.h
index c84e42142ccd77c070a65bc19c8ce7713a3666b5..746ed0651bc9650a1ba126fff18c2120595ca88e 100644
--- a/src/urma/tools/urma_admin/admin_parameters.h
+++ b/src/urma/tools/urma_admin/admin_parameters.h
@@ -300,6 +300,7 @@ void usage(const char *argv0);
 char *pop_arg(admin_config_t *cmds);
 int pop_arg_dev(admin_config_t *cmds);
 int pop_arg_ns(admin_config_t *cfg);
+int pop_arg_sharing(admin_config_t *cfg);
 int pop_arg_eid(admin_config_t *cfg);
 int pop_arg_eid_idx(admin_config_t *cfg);