diff --git a/src/common/grpc/src/channel_manager.rs b/src/common/grpc/src/channel_manager.rs
index 70e70893d4..439e3e2fe9 100644
--- a/src/common/grpc/src/channel_manager.rs
+++ b/src/common/grpc/src/channel_manager.rs
@@ -230,9 +230,9 @@ impl Default for ChannelConfig {
             rate_limit: None,
             initial_stream_window_size: None,
             initial_connection_window_size: None,
-            http2_keep_alive_interval: None,
+            http2_keep_alive_interval: Some(Duration::from_secs(30)),
             http2_keep_alive_timeout: None,
-            http2_keep_alive_while_idle: None,
+            http2_keep_alive_while_idle: Some(true),
             http2_adaptive_window: None,
             tcp_keepalive: None,
             tcp_nodelay: true,
@@ -497,9 +497,9 @@ mod tests {
                 rate_limit: None,
                 initial_stream_window_size: None,
                 initial_connection_window_size: None,
-                http2_keep_alive_interval: None,
+                http2_keep_alive_interval: Some(Duration::from_secs(30)),
                 http2_keep_alive_timeout: None,
-                http2_keep_alive_while_idle: None,
+                http2_keep_alive_while_idle: Some(true),
                 http2_adaptive_window: None,
                 tcp_keepalive: None,
                 tcp_nodelay: true,