diff --git a/include/spdk/nvme.h b/include/spdk/nvme.h
index 54fe78fd2..a253a120a 100644
--- a/include/spdk/nvme.h
+++ b/include/spdk/nvme.h
@@ -48,6 +48,11 @@ extern "C" {
 #include "spdk/nvme_spec.h"
 #include "spdk/nvmf_spec.h"
 
+#define SPDK_NVME_TRANSPORT_NAME_FC	"FC"
+#define SPDK_NVME_TRANSPORT_NAME_PCIE	"PCIE"
+#define SPDK_NVME_TRANSPORT_NAME_RDMA	"RDMA"
+#define SPDK_NVME_TRANSPORT_NAME_TCP	"TCP"
+
 /**
  * Opaque handle to a controller. Returned by spdk_nvme_probe()'s attach_cb.
  */
@@ -293,6 +298,11 @@ typedef enum spdk_nvme_transport_type spdk_nvme_transport_type_t;
  * spdk_nvme_transport_id_parse().
  */
 struct spdk_nvme_transport_id {
+	/**
+	 * NVMe transport string.
+	 */
+	char trstring[SPDK_NVMF_TRSTRING_MAX_LEN + 1];
+
 	/**
 	 * NVMe transport type.
 	 */
@@ -394,6 +404,17 @@ enum spdk_nvme_ctrlr_flags {
  */
 int spdk_nvme_transport_id_parse(struct spdk_nvme_transport_id *trid, const char *str);
 
+
+/**
+ * Fill in the trtype and trstring fields of this trid based on a known transport type.
+ *
+ * \param trid The trid to fill out.
+ * \param trtype The transport type to use for filling the trid fields. Only valid for
+ * transport types referenced in the NVMe-oF spec.
+ */
+void spdk_nvme_trid_populate_transport(struct spdk_nvme_transport_id *trid,
+				       enum spdk_nvme_transport_type trtype);
+
 /**
  * Parse the string representation of a host ID.
  *
@@ -419,6 +440,18 @@ int spdk_nvme_transport_id_parse(struct spdk_nvme_transport_id *trid, const char
  */
 int spdk_nvme_host_id_parse(struct spdk_nvme_host_id *hostid, const char *str);
 
+/**
+ * Parse the string representation of a transport ID tranport type into the trid struct.
+ *
+ * \param trid The trid to write to
+ * \param trstring Input string representation of transport type (e.g. "PCIe", "RDMA").
+ *
+ * \return 0 if parsing was successful and trtype is filled out, or negated errno
+ * values if the provided string was an invalid transport string.
+ */
+int spdk_nvme_transport_id_populate_trstring(struct spdk_nvme_transport_id *trid,
+		const char *trstring);
+
 /**
  * Parse the string representation of a transport ID tranport type.
  *
diff --git a/include/spdk/nvmf_spec.h b/include/spdk/nvmf_spec.h
index 097377f6e..1b4a39d77 100644
--- a/include/spdk/nvmf_spec.h
+++ b/include/spdk/nvmf_spec.h
@@ -334,6 +334,7 @@ SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_fabric_prop_set_cmd) == 64, "Incorrec
 
 #define SPDK_DOMAIN_LABEL_MAX_LEN 63 /* RFC 1034 max domain label length */
 
+#define SPDK_NVMF_TRSTRING_MAX_LEN 32
 #define SPDK_NVMF_TRADDR_MAX_LEN 256
 #define SPDK_NVMF_TRSVCID_MAX_LEN 32
 
diff --git a/lib/nvme/nvme.c b/lib/nvme/nvme.c
index 72e837882..c7cf1eb32 100644
--- a/lib/nvme/nvme.c
+++ b/lib/nvme/nvme.c
@@ -637,7 +637,7 @@ spdk_nvme_probe(const struct spdk_nvme_transport_id *trid, void *cb_ctx,
 
 	if (trid == NULL) {
 		memset(&trid_pcie, 0, sizeof(trid_pcie));
-		trid_pcie.trtype = SPDK_NVME_TRANSPORT_PCIE;
+		spdk_nvme_trid_populate_transport(&trid_pcie, SPDK_NVME_TRANSPORT_PCIE);
 		trid = &trid_pcie;
 	}
 
@@ -701,6 +701,59 @@ spdk_nvme_connect(const struct spdk_nvme_transport_id *trid,
 	return ctrlr;
 }
 
+void
+spdk_nvme_trid_populate_transport(struct spdk_nvme_transport_id *trid,
+				  enum spdk_nvme_transport_type trtype)
+{
+	const char *trstring;
+
+	trid->trtype = trtype;
+	switch (trtype) {
+	case SPDK_NVME_TRANSPORT_FC:
+		trstring = SPDK_NVME_TRANSPORT_NAME_FC;
+		break;
+	case SPDK_NVME_TRANSPORT_PCIE:
+		trstring = SPDK_NVME_TRANSPORT_NAME_PCIE;
+		break;
+	case SPDK_NVME_TRANSPORT_RDMA:
+		trstring = SPDK_NVME_TRANSPORT_NAME_RDMA;
+		break;
+	case SPDK_NVME_TRANSPORT_TCP:
+		trstring = SPDK_NVME_TRANSPORT_NAME_TCP;
+		break;
+	default:
+		SPDK_ERRLOG("don't use this for custom transports\n");
+		break;
+	}
+	snprintf(trid->trstring, SPDK_NVMF_TRSTRING_MAX_LEN, "%s", trstring);
+}
+
+int
+spdk_nvme_transport_id_populate_trstring(struct spdk_nvme_transport_id *trid, const char *trstring)
+{
+	int len, i, rc;
+
+	if (trstring == NULL) {
+		return -EINVAL;
+	}
+
+	len = strnlen(trstring, SPDK_NVMF_TRSTRING_MAX_LEN);
+	if (len == SPDK_NVMF_TRSTRING_MAX_LEN) {
+		return -EINVAL;
+	}
+
+	rc = snprintf(trid->trstring, SPDK_NVMF_TRSTRING_MAX_LEN, "%s", trstring);
+	if (rc < 0) {
+		return rc;
+	}
+
+	/* cast official trstring to uppercase version of input. */
+	for (i = 0; i < len; i++) {
+		trid->trstring[i] = toupper(trid->trstring[i]);
+	}
+	return 0;
+}
+
 int
 spdk_nvme_transport_id_parse_trtype(enum spdk_nvme_transport_type *trtype, const char *str)
 {
@@ -853,6 +906,10 @@ spdk_nvme_transport_id_parse(struct spdk_nvme_transport_id *trid, const char *st
 		}
 
 		if (strcasecmp(key, "trtype") == 0) {
+			if (spdk_nvme_transport_id_populate_trstring(trid, val) != 0) {
+				SPDK_ERRLOG("invalid transport '%s'\n", val);
+				return -EINVAL;
+			}
 			if (spdk_nvme_transport_id_parse_trtype(&trid->trtype, val) != 0) {
 				SPDK_ERRLOG("Unknown trtype '%s'\n", val);
 				return -EINVAL;
diff --git a/lib/nvme/nvme_fabric.c b/lib/nvme/nvme_fabric.c
index 7381f70d6..d7c103a23 100644
--- a/lib/nvme/nvme_fabric.c
+++ b/lib/nvme/nvme_fabric.c
@@ -160,6 +160,7 @@ nvme_fabric_discover_probe(struct spdk_nvmf_discovery_log_page_entry *entry,
 	}
 
 	trid.trtype = entry->trtype;
+	spdk_nvme_transport_id_populate_trstring(&trid, spdk_nvme_transport_id_trtype_str(entry->trtype));
 	if (!spdk_nvme_transport_available(trid.trtype)) {
 		SPDK_WARNLOG("NVMe transport type %u not available; skipping probe\n",
 			     trid.trtype);
diff --git a/lib/nvme/nvme_pcie.c b/lib/nvme/nvme_pcie.c
index 3ac4ed741..200749fe9 100644
--- a/lib/nvme/nvme_pcie.c
+++ b/lib/nvme/nvme_pcie.c
@@ -286,7 +286,7 @@ _nvme_pcie_hotplug_monitor(struct spdk_nvme_probe_ctx *probe_ctx)
 				struct spdk_nvme_transport_id trid;
 
 				memset(&trid, 0, sizeof(trid));
-				trid.trtype = SPDK_NVME_TRANSPORT_PCIE;
+				spdk_nvme_trid_populate_transport(&trid, SPDK_NVME_TRANSPORT_PCIE);
 				snprintf(trid.traddr, sizeof(trid.traddr), "%s", event.traddr);
 
 				ctrlr = spdk_nvme_get_ctrlr_by_trid_unsafe(&trid);
@@ -729,7 +729,7 @@ pcie_nvme_enum_cb(void *ctx, struct spdk_pci_device *pci_dev)
 
 	pci_addr = spdk_pci_device_get_addr(pci_dev);
 
-	trid.trtype = SPDK_NVME_TRANSPORT_PCIE;
+	spdk_nvme_trid_populate_transport(&trid, SPDK_NVME_TRANSPORT_PCIE);
 	spdk_pci_addr_fmt(trid.traddr, sizeof(trid.traddr), &pci_addr);
 
 	ctrlr = spdk_nvme_get_ctrlr_by_trid_unsafe(&trid);
@@ -828,7 +828,7 @@ struct spdk_nvme_ctrlr *nvme_pcie_ctrlr_construct(const struct spdk_nvme_transpo
 
 	pctrlr->is_remapped = false;
 	pctrlr->ctrlr.is_removed = false;
-	pctrlr->ctrlr.trid.trtype = SPDK_NVME_TRANSPORT_PCIE;
+	spdk_nvme_trid_populate_transport(&pctrlr->ctrlr.trid, SPDK_NVME_TRANSPORT_PCIE);
 	pctrlr->devhandle = devhandle;
 	pctrlr->ctrlr.opts = *opts;
 	memcpy(&pctrlr->ctrlr.trid, trid, sizeof(pctrlr->ctrlr.trid));
diff --git a/lib/nvme/nvme_rdma.c b/lib/nvme/nvme_rdma.c
index 00852c2d2..c0a65e5fc 100644
--- a/lib/nvme/nvme_rdma.c
+++ b/lib/nvme/nvme_rdma.c
@@ -1714,7 +1714,7 @@ struct spdk_nvme_ctrlr *nvme_rdma_ctrlr_construct(const struct spdk_nvme_transpo
 		return NULL;
 	}
 
-	rctrlr->ctrlr.trid.trtype = SPDK_NVME_TRANSPORT_RDMA;
+	spdk_nvme_trid_populate_transport(&rctrlr->ctrlr.trid, SPDK_NVME_TRANSPORT_RDMA);
 	rctrlr->ctrlr.opts = *opts;
 	memcpy(&rctrlr->ctrlr.trid, trid, sizeof(rctrlr->ctrlr.trid));
 
diff --git a/lib/nvme/nvme_tcp.c b/lib/nvme/nvme_tcp.c
index 393ce6fbb..58205e8dd 100644
--- a/lib/nvme/nvme_tcp.c
+++ b/lib/nvme/nvme_tcp.c
@@ -1717,9 +1717,9 @@ struct spdk_nvme_ctrlr *nvme_tcp_ctrlr_construct(const struct spdk_nvme_transpor
 		return NULL;
 	}
 
-	tctrlr->ctrlr.trid.trtype = SPDK_NVME_TRANSPORT_TCP;
 	tctrlr->ctrlr.opts = *opts;
 	tctrlr->ctrlr.trid = *trid;
+	spdk_nvme_trid_populate_transport(&tctrlr->ctrlr.trid, SPDK_NVME_TRANSPORT_TCP);
 
 	rc = nvme_ctrlr_construct(&tctrlr->ctrlr);
 	if (rc != 0) {
diff --git a/lib/nvmf/nvmf.c b/lib/nvmf/nvmf.c
index ff5a2096a..36ea9daec 100644
--- a/lib/nvmf/nvmf.c
+++ b/lib/nvmf/nvmf.c
@@ -371,7 +371,6 @@ spdk_nvmf_write_subsystem_config_json(struct spdk_json_write_ctx *w,
 	struct spdk_nvmf_ns_opts ns_opts;
 	uint32_t max_namespaces;
 	char uuid_str[SPDK_UUID_STRING_LEN];
-	const char *trtype;
 	const char *adrfam;
 
 	if (spdk_nvmf_subsystem_get_type(subsystem) != SPDK_NVMF_SUBTYPE_NVME) {
@@ -404,7 +403,6 @@ spdk_nvmf_write_subsystem_config_json(struct spdk_json_write_ctx *w,
 	     listener = spdk_nvmf_subsystem_get_next_listener(subsystem, listener)) {
 		trid = spdk_nvmf_listener_get_trid(listener);
 
-		trtype = spdk_nvme_transport_id_trtype_str(trid->trtype);
 		adrfam = spdk_nvme_transport_id_adrfam_str(trid->adrfam);
 
 		spdk_json_write_object_begin(w);
@@ -418,7 +416,7 @@ spdk_nvmf_write_subsystem_config_json(struct spdk_json_write_ctx *w,
 		/*     "listen_address" : { */
 		spdk_json_write_named_object_begin(w, "listen_address");
 
-		spdk_json_write_named_string(w, "trtype", trtype);
+		spdk_json_write_named_string(w, "trtype", trid->trstring);
 		if (adrfam) {
 			spdk_json_write_named_string(w, "adrfam", adrfam);
 		}
diff --git a/lib/nvmf/nvmf_fc.h b/lib/nvmf/nvmf_fc.h
index dcd3f928c..f8cc717f1 100644
--- a/lib/nvmf/nvmf_fc.h
+++ b/lib/nvmf/nvmf_fc.h
@@ -848,7 +848,7 @@ spdk_nvmf_fc_req_in_xfer(struct spdk_nvmf_fc_request *fc_req)
 static inline void
 spdk_nvmf_fc_create_trid(struct spdk_nvme_transport_id *trid, uint64_t n_wwn, uint64_t p_wwn)
 {
-	trid->trtype = (enum spdk_nvme_transport_type) SPDK_NVMF_TRTYPE_FC;
+	spdk_nvme_trid_populate_transport(trid, SPDK_NVME_TRANSPORT_FC);
 	trid->adrfam = SPDK_NVMF_ADRFAM_FC;
 	snprintf(trid->trsvcid, sizeof(trid->trsvcid), "none");
 	snprintf(trid->traddr, sizeof(trid->traddr), "nn-0x%lx:pn-0x%lx", n_wwn, p_wwn);
diff --git a/lib/nvmf/nvmf_rpc.c b/lib/nvmf/nvmf_rpc.c
index 77c75ee19..166e9608d 100644
--- a/lib/nvmf/nvmf_rpc.c
+++ b/lib/nvmf/nvmf_rpc.c
@@ -211,23 +211,18 @@ dump_nvmf_subsystem(struct spdk_json_write_ctx *w, struct spdk_nvmf_subsystem *s
 	for (listener = spdk_nvmf_subsystem_get_first_listener(subsystem); listener != NULL;
 	     listener = spdk_nvmf_subsystem_get_next_listener(subsystem, listener)) {
 		const struct spdk_nvme_transport_id *trid;
-		const char *trtype;
 		const char *adrfam;
 
 		trid = spdk_nvmf_listener_get_trid(listener);
 
 		spdk_json_write_object_begin(w);
-		trtype = spdk_nvme_transport_id_trtype_str(trid->trtype);
-		if (trtype == NULL) {
-			trtype = "unknown";
-		}
 		adrfam = spdk_nvme_transport_id_adrfam_str(trid->adrfam);
 		if (adrfam == NULL) {
 			adrfam = "unknown";
 		}
 		/* NOTE: "transport" is kept for compatibility; new code should use "trtype" */
-		spdk_json_write_named_string(w, "transport", trtype);
-		spdk_json_write_named_string(w, "trtype", trtype);
+		spdk_json_write_named_string(w, "transport", trid->trstring);
+		spdk_json_write_named_string(w, "trtype", trid->trstring);
 		spdk_json_write_named_string(w, "adrfam", adrfam);
 		spdk_json_write_named_string(w, "traddr", trid->traddr);
 		spdk_json_write_named_string(w, "trsvcid", trid->trsvcid);
@@ -689,6 +684,11 @@ rpc_listen_address_to_trid(const struct rpc_listen_address *address,
 
 	memset(trid, 0, sizeof(*trid));
 
+	if (spdk_nvme_transport_id_populate_trstring(trid, address->transport)) {
+		SPDK_ERRLOG("Invalid transport string: %s\n", address->transport);
+		return -EINVAL;
+	}
+
 	if (spdk_nvme_transport_id_parse_trtype(&trid->trtype, address->transport)) {
 		SPDK_ERRLOG("Invalid transport type: %s\n", address->transport);
 		return -EINVAL;
diff --git a/lib/nvmf/rdma.c b/lib/nvmf/rdma.c
index d4d92343b..449a69a32 100644
--- a/lib/nvmf/rdma.c
+++ b/lib/nvmf/rdma.c
@@ -2642,7 +2642,7 @@ spdk_nvmf_rdma_listen(struct spdk_nvmf_transport *transport,
 	/* Selectively copy the trid. Things like NQN don't matter here - that
 	 * mapping is enforced elsewhere.
 	 */
-	port->trid.trtype = SPDK_NVME_TRANSPORT_RDMA;
+	spdk_nvme_trid_populate_transport(&port->trid, SPDK_NVME_TRANSPORT_RDMA);
 	port->trid.adrfam = trid->adrfam;
 	snprintf(port->trid.traddr, sizeof(port->trid.traddr), "%s", trid->traddr);
 	snprintf(port->trid.trsvcid, sizeof(port->trid.trsvcid), "%s", trid->trsvcid);
@@ -2762,7 +2762,7 @@ spdk_nvmf_rdma_stop_listen(struct spdk_nvmf_transport *transport,
 	/* Selectively copy the trid. Things like NQN don't matter here - that
 	 * mapping is enforced elsewhere.
 	 */
-	trid.trtype = SPDK_NVME_TRANSPORT_RDMA;
+	spdk_nvme_trid_populate_transport(&trid, SPDK_NVME_TRANSPORT_RDMA);
 	trid.adrfam = _trid->adrfam;
 	snprintf(trid.traddr, sizeof(port->trid.traddr), "%s", _trid->traddr);
 	snprintf(trid.trsvcid, sizeof(port->trid.trsvcid), "%s", _trid->trsvcid);
@@ -3928,7 +3928,7 @@ spdk_nvmf_rdma_trid_from_cm_id(struct rdma_cm_id *id,
 	struct sockaddr *saddr;
 	uint16_t port;
 
-	trid->trtype = SPDK_NVME_TRANSPORT_RDMA;
+	spdk_nvme_trid_populate_transport(trid, SPDK_NVME_TRANSPORT_RDMA);
 
 	if (peer) {
 		saddr = rdma_get_peer_addr(id);
diff --git a/lib/nvmf/tcp.c b/lib/nvmf/tcp.c
index ec3e22ae1..8648b6ea3 100644
--- a/lib/nvmf/tcp.c
+++ b/lib/nvmf/tcp.c
@@ -610,7 +610,7 @@ _spdk_nvmf_tcp_canon_listen_trid(struct spdk_nvme_transport_id *canon_trid,
 	}
 
 	memset(canon_trid, 0, sizeof(*canon_trid));
-	canon_trid->trtype = SPDK_NVME_TRANSPORT_TCP;
+	spdk_nvme_trid_populate_transport(canon_trid, SPDK_NVME_TRANSPORT_TCP);
 	canon_trid->adrfam = trid->adrfam;
 	snprintf(canon_trid->traddr, sizeof(canon_trid->traddr), "%s", trid->traddr);
 	snprintf(canon_trid->trsvcid, sizeof(canon_trid->trsvcid), "%d", trsvcid_int);
@@ -2651,7 +2651,7 @@ spdk_nvmf_tcp_qpair_get_trid(struct spdk_nvmf_qpair *qpair,
 	uint16_t			port;
 
 	tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
-	trid->trtype = SPDK_NVME_TRANSPORT_TCP;
+	spdk_nvme_trid_populate_transport(trid, SPDK_NVME_TRANSPORT_TCP);
 
 	if (peer) {
 		snprintf(trid->traddr, sizeof(trid->traddr), "%s", tqpair->initiator_addr);
diff --git a/module/bdev/nvme/bdev_nvme_rpc.c b/module/bdev/nvme/bdev_nvme_rpc.c
index c705a9efd..1e8b1aa21 100644
--- a/module/bdev/nvme/bdev_nvme_rpc.c
+++ b/module/bdev/nvme/bdev_nvme_rpc.c
@@ -270,6 +270,15 @@ spdk_rpc_bdev_nvme_attach_controller(struct spdk_jsonrpc_request *request,
 		goto cleanup;
 	}
 
+	/* Parse trstring */
+	rc = spdk_nvme_transport_id_populate_trstring(&trid, ctx->req.trtype);
+	if (rc < 0) {
+		SPDK_ERRLOG("Failed to parse trtype: %s\n", ctx->req.trtype);
+		spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse trtype: %s",
+						     ctx->req.trtype);
+		goto cleanup;
+	}
+
 	/* Parse trtype */
 	rc = spdk_nvme_transport_id_parse_trtype(&trid.trtype, ctx->req.trtype);
 	if (rc < 0) {
diff --git a/module/event/subsystems/nvmf/conf.c b/module/event/subsystems/nvmf/conf.c
index 5f78bcb46..cdfc9cbc4 100644
--- a/module/event/subsystems/nvmf/conf.c
+++ b/module/event/subsystems/nvmf/conf.c
@@ -435,7 +435,7 @@ spdk_nvmf_parse_subsystem(struct spdk_conf_section *sp)
 
 	/* Parse Listen sections */
 	for (i = 0; ; i++) {
-		struct spdk_nvme_transport_id trid = {0};
+		struct spdk_nvme_transport_id trid = {{0}};
 		const char *transport;
 		const char *address;
 		char *address_dup;
@@ -445,6 +445,11 @@ spdk_nvmf_parse_subsystem(struct spdk_conf_section *sp)
 			break;
 		}
 
+		if (spdk_nvme_transport_id_populate_trstring(&trid, transport)) {
+			SPDK_ERRLOG("Invalid listen address transport type '%s'\n", transport);
+			continue;
+		}
+
 		if (spdk_nvme_transport_id_parse_trtype(&trid.trtype, transport)) {
 			SPDK_ERRLOG("Invalid listen address transport type '%s'\n", transport);
 			continue;
diff --git a/test/unit/lib/nvme/nvme_ctrlr.c/nvme_ctrlr_ut.c b/test/unit/lib/nvme/nvme_ctrlr.c/nvme_ctrlr_ut.c
index 53446c32f..07229522b 100644
--- a/test/unit/lib/nvme/nvme_ctrlr.c/nvme_ctrlr_ut.c
+++ b/test/unit/lib/nvme/nvme_ctrlr.c/nvme_ctrlr_ut.c
@@ -1894,7 +1894,7 @@ static void
 test_spdk_nvme_ctrlr_set_trid(void)
 {
 	struct spdk_nvme_ctrlr	ctrlr = {0};
-	struct spdk_nvme_transport_id	new_trid = {0};
+	struct spdk_nvme_transport_id	new_trid = {{0}};
 
 	ctrlr.is_failed = false;
 	ctrlr.trid.trtype = SPDK_NVME_TRANSPORT_RDMA;
diff --git a/test/unit/lib/nvme/nvme_pcie.c/nvme_pcie_ut.c b/test/unit/lib/nvme/nvme_pcie.c/nvme_pcie_ut.c
index ec7c84d2e..c5ac8eda9 100644
--- a/test/unit/lib/nvme/nvme_pcie.c/nvme_pcie_ut.c
+++ b/test/unit/lib/nvme/nvme_pcie.c/nvme_pcie_ut.c
@@ -40,6 +40,42 @@
 
 #include "nvme/nvme_pcie.c"
 
+const char *
+spdk_nvme_transport_id_trtype_str(enum spdk_nvme_transport_type trtype)
+{
+	switch (trtype) {
+	case SPDK_NVME_TRANSPORT_PCIE:
+		return "PCIe";
+	case SPDK_NVME_TRANSPORT_RDMA:
+		return "RDMA";
+	case SPDK_NVME_TRANSPORT_FC:
+		return "FC";
+	default:
+		return NULL;
+	}
+}
+
+int
+spdk_nvme_transport_id_populate_trstring(struct spdk_nvme_transport_id *trid, const char *trstring)
+{
+	int len, i;
+
+	if (trstring == NULL) {
+		return -EINVAL;
+	}
+
+	len = strnlen(trstring, SPDK_NVMF_TRSTRING_MAX_LEN);
+	if (len == SPDK_NVMF_TRSTRING_MAX_LEN) {
+		return -EINVAL;
+	}
+
+	/* cast official trstring to uppercase version of input. */
+	for (i = 0; i < len; i++) {
+		trid->trstring[i] = toupper(trstring[i]);
+	}
+	return 0;
+}
+
 struct spdk_log_flag SPDK_LOG_NVME = {
 	.name = "nvme",
 	.enabled = false,
@@ -125,6 +161,8 @@ DEFINE_STUB_V(spdk_nvme_qpair_print_command, (struct spdk_nvme_qpair *qpair,
 		struct spdk_nvme_cmd *cmd));
 DEFINE_STUB_V(spdk_nvme_qpair_print_completion, (struct spdk_nvme_qpair *qpair,
 		struct spdk_nvme_cpl *cpl));
+DEFINE_STUB_V(spdk_nvme_trid_populate_transport, (struct spdk_nvme_transport_id *trid,
+		enum spdk_nvme_transport_type trtype));
 
 static void
 prp_list_prep(struct nvme_tracker *tr, struct nvme_request *req, uint32_t *prp_index)
diff --git a/test/unit/lib/nvmf/rdma.c/rdma_ut.c b/test/unit/lib/nvmf/rdma.c/rdma_ut.c
index b1b2fe932..ff510a264 100644
--- a/test/unit/lib/nvmf/rdma.c/rdma_ut.c
+++ b/test/unit/lib/nvmf/rdma.c/rdma_ut.c
@@ -82,6 +82,44 @@ DEFINE_STUB(spdk_nvme_transport_id_compare, int, (const struct spdk_nvme_transpo
 DEFINE_STUB_V(spdk_nvmf_ctrlr_abort_aer, (struct spdk_nvmf_ctrlr *ctrlr));
 DEFINE_STUB(spdk_nvmf_request_get_dif_ctx, bool, (struct spdk_nvmf_request *req,
 		struct spdk_dif_ctx *dif_ctx), false);
+DEFINE_STUB_V(spdk_nvme_trid_populate_transport, (struct spdk_nvme_transport_id *trid,
+		enum spdk_nvme_transport_type trtype));
+
+const char *
+spdk_nvme_transport_id_trtype_str(enum spdk_nvme_transport_type trtype)
+{
+	switch (trtype) {
+	case SPDK_NVME_TRANSPORT_PCIE:
+		return "PCIe";
+	case SPDK_NVME_TRANSPORT_RDMA:
+		return "RDMA";
+	case SPDK_NVME_TRANSPORT_FC:
+		return "FC";
+	default:
+		return NULL;
+	}
+}
+
+int
+spdk_nvme_transport_id_populate_trstring(struct spdk_nvme_transport_id *trid, const char *trstring)
+{
+	int len, i;
+
+	if (trstring == NULL) {
+		return -EINVAL;
+	}
+
+	len = strnlen(trstring, SPDK_NVMF_TRSTRING_MAX_LEN);
+	if (len == SPDK_NVMF_TRSTRING_MAX_LEN) {
+		return -EINVAL;
+	}
+
+	/* cast official trstring to uppercase version of input. */
+	for (i = 0; i < len; i++) {
+		trid->trstring[i] = toupper(trstring[i]);
+	}
+	return 0;
+}
 
 uint64_t
 spdk_mem_map_translate(const struct spdk_mem_map *map, uint64_t vaddr, uint64_t *size)
diff --git a/test/unit/lib/nvmf/tcp.c/tcp_ut.c b/test/unit/lib/nvmf/tcp.c/tcp_ut.c
index b084d03d4..f729d95e6 100644
--- a/test/unit/lib/nvmf/tcp.c/tcp_ut.c
+++ b/test/unit/lib/nvmf/tcp.c/tcp_ut.c
@@ -188,6 +188,9 @@ DEFINE_STUB(spdk_sock_set_priority,
 
 DEFINE_STUB_V(spdk_nvmf_ns_reservation_request, (void *ctx));
 
+DEFINE_STUB_V(spdk_nvme_trid_populate_transport, (struct spdk_nvme_transport_id *trid,
+		enum spdk_nvme_transport_type trtype));
+
 struct spdk_trace_histories *g_trace_histories;
 
 struct spdk_bdev {
@@ -221,13 +224,48 @@ _spdk_trace_record(uint64_t tsc, uint16_t tpoint_id, uint16_t poller_id,
 {
 }
 
+const char *
+spdk_nvme_transport_id_trtype_str(enum spdk_nvme_transport_type trtype)
+{
+	switch (trtype) {
+	case SPDK_NVME_TRANSPORT_PCIE:
+		return "PCIe";
+	case SPDK_NVME_TRANSPORT_RDMA:
+		return "RDMA";
+	case SPDK_NVME_TRANSPORT_FC:
+		return "FC";
+	default:
+		return NULL;
+	}
+}
+
+int
+spdk_nvme_transport_id_populate_trstring(struct spdk_nvme_transport_id *trid, const char *trstring)
+{
+	int len, i;
+
+	if (trstring == NULL) {
+		return -EINVAL;
+	}
+
+	len = strnlen(trstring, SPDK_NVMF_TRSTRING_MAX_LEN);
+	if (len == SPDK_NVMF_TRSTRING_MAX_LEN) {
+		return -EINVAL;
+	}
+
+	/* cast official trstring to uppercase version of input. */
+	for (i = 0; i < len; i++) {
+		trid->trstring[i] = toupper(trstring[i]);
+	}
+	return 0;
+}
+
 int
 spdk_nvmf_qpair_disconnect(struct spdk_nvmf_qpair *qpair, nvmf_qpair_disconnect_cb cb_fn, void *ctx)
 {
 	return 0;
 }
 
-
 int
 spdk_nvmf_request_get_buffers(struct spdk_nvmf_request *req,
 			      struct spdk_nvmf_transport_poll_group *group,