diff --git a/xCAT-server/lib/xcat/plugins/openbmc.pm b/xCAT-server/lib/xcat/plugins/openbmc.pm
index 6183cf29b..346e67f76 100644
--- a/xCAT-server/lib/xcat/plugins/openbmc.pm
+++ b/xCAT-server/lib/xcat/plugins/openbmc.pm
@@ -2991,6 +2991,12 @@ sub deal_with_response {
         }
 
         if ($response->status_line eq $::RESPONSE_SERVICE_UNAVAILABLE) {
+            $node_info{$node}{_503_retries} = ($node_info{$node}{_503_retries} || 0) + 1;
+            if ($node_info{$node}{_503_retries} <= 3) {
+                $node_info{$node}{cur_status} =~ s/_RESPONSE$/_REQUEST/;
+                $node_wait{$node} = time() + 3;
+                return;
+            }
             $error = $::RESPONSE_SERVICE_UNAVAILABLE;
         } elsif ($response->status_line eq $::RESPONSE_METHOD_NOT_ALLOWED) {
             if ($node_info{$node}{cur_status} eq "REVENTLOG_RESOLVED_RESPONSE") {