diff --git a/src/modules/transport/common/env_defs.h b/src/modules/transport/common/env_defs.h
index 8ab5aaa3..9bf9922d 100644
--- a/src/modules/transport/common/env_defs.h
+++ b/src/modules/transport/common/env_defs.h
@@ -152,6 +152,9 @@ NVSHMEMI_ENV_DEF(IBGDA_NIC_HANDLER, string, "auto", NVSHMEMI_ENV_CAT_TRANSPORT,
                  "- gpu: use GPU SMs.\n"
                  "- cpu: use CPU with gdrcopy backend.\n"
                  "- cpu_host_memory: use CPU with CUDA memory.")
+NVSHMEMI_ENV_DEF(IBGDA_TIMEOUT, int, 22, NVSHMEMI_ENV_CAT_TRANSPORT,
+                "IBGDA ibverbs timeout. Values can be 0-31, 0 means infinite. "
+                "Actual timeout value = 4.096us * 2^timeout .")
 NVSHMEMI_ENV_DEF(IB_ENABLE_IBGDA, bool, false, NVSHMEMI_ENV_CAT_TRANSPORT,
                  "Set to enable GPU-initiated communication transport.")
 #endif
diff --git a/src/modules/transport/ibgda/ibgda.cpp b/src/modules/transport/ibgda/ibgda.cpp
index 3f762f9e..999525c0 100644
--- a/src/modules/transport/ibgda/ibgda.cpp
+++ b/src/modules/transport/ibgda/ibgda.cpp
@@ -1790,7 +1790,7 @@ static int ibgda_rc_init2rtr(nvshmemt_ibgda_state_t *ibgda_state, struct ibgda_e
     return status;
 }
 
-static int ibgda_qp_rtr2rts(struct ibgda_ep *ep, const struct ibgda_device *device, int portid) {
+static int ibgda_qp_rtr2rts(nvshmemt_ibgda_state_t *ibgda_state, struct ibgda_ep *ep, const struct ibgda_device *device, int portid) {
     int status = 0;
 
     uint8_t cmd_in[DEVX_ST_SZ_BYTES(rtr2rts_qp_in)] = {
@@ -1815,7 +1815,7 @@ static int ibgda_qp_rtr2rts(struct ibgda_ep *ep, const struct ibgda_device *devi
     DEVX_SET(qpc, qpc, next_send_psn, 0x0);
     DEVX_SET(qpc, qpc, retry_count, 7);
     DEVX_SET(qpc, qpc, rnr_retry, 7);
-    DEVX_SET(qpc, qpc, primary_address_path.ack_timeout, 20);
+    DEVX_SET(qpc, qpc, primary_address_path.ack_timeout, ibgda_state->option->IBGDA_TIMEOUT);
 
     status = mlx5dv_devx_obj_modify(ep->devx_qp, cmd_in, sizeof(cmd_in), cmd_out, sizeof(cmd_out));
     NVSHMEMI_NZ_ERROR_JMP(status, NVSHMEMX_ERROR_INTERNAL, out,
@@ -3147,7 +3147,7 @@ static int ibgda_setup_rc_endpoints(nvshmemt_ibgda_state_t *ibgda_state,
             NVSHMEMI_NZ_ERROR_JMP(status, NVSHMEMX_ERROR_INTERNAL, out,
                                   "ibgda_rc_init2rtr failed on RC #%d.", ep_index);
 
-            status = ibgda_qp_rtr2rts(device->rc.eps[ep_index], device, portid);
+            status = ibgda_qp_rtr2rts(ibgda_state, device->rc.eps[ep_index], device, portid);
             NVSHMEMI_NZ_ERROR_JMP(status, NVSHMEMX_ERROR_INTERNAL, out,
                                   "ibgda_qp_rtr2rts failed on RC #%d.", ep_index);
         }