diff --git a/dockers/docker-macsec/cli-plugin-tests/config_db.json b/dockers/docker-macsec/cli-plugin-tests/config_db.json
index 8c6b6893e560..9f4c266d4284 100644
--- a/dockers/docker-macsec/cli-plugin-tests/config_db.json
+++ b/dockers/docker-macsec/cli-plugin-tests/config_db.json
@@ -2,7 +2,7 @@
     "MACSEC_PROFILE|macsec_profile": {
             "cipher_suite": "GCM-AES-XPN-256",
             "policy": "security",
-            "primary_cak": "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF",
+            "primary_cak": "5207554155500e5d5157786d6c2a3d2031425a5e577e7e727f6b6c03312432262706080a00005b554f4e007975707670725b0a54540c0252445e5d7a29252b046a",
             "primary_ckn": "6162636465666768696A6B6C6D6E6F707172737475767778797A303132333435",
             "priority": "0",
             "rekey_period": "900",
diff --git a/dockers/docker-macsec/cli-plugin-tests/test_config_macsec.py b/dockers/docker-macsec/cli-plugin-tests/test_config_macsec.py
index 45ab80c7ed12..3a279bd61272 100644
--- a/dockers/docker-macsec/cli-plugin-tests/test_config_macsec.py
+++ b/dockers/docker-macsec/cli-plugin-tests/test_config_macsec.py
@@ -8,7 +8,7 @@
 
 
 profile_name = "test"
-primary_cak = "01234567890123456789012345678912"
+primary_cak = "2363647040534355560e000802065d574d400e000e030307075f0e5050000e5541"
 primary_ckn = "01234567890123456789012345678912"
 
 
@@ -48,7 +48,7 @@ def test_macsec_valid_profile(self, mock_cfgdb):
 
         profile_name = "test"
         profile_map = {
-            "primary_cak": "0123456789012345678901234567891201234567890123456789012345678912",
+            "primary_cak": "3946080a0407070303530256560a04504650530352565e731f1a5c4f524f4b5a5e547b79777c6663754b5e465253050d0d0503565a48470b0b030604020c520a54",
             "primary_ckn": "01234567890123456789012345678912",
             "priority": 64,
             "cipher_suite": "GCM-AES-XPN-256",
@@ -109,7 +109,7 @@ def test_macsec_port(self, mock_cfgdb):
         runner = CliRunner()
 
         result = runner.invoke(macsec.macsec, ["profile", "add", "test",
-                "--primary_cak=01234567890123456789012345678912","--primary_ckn=01234567890123456789012345678912"],
+                "--primary_cak=2363647040534355560e000802065d574d400e000e030307075f0e5050000e5541","--primary_ckn=01234567890123456789012345678912"],
                 obj=cfgdb)
         assert result.exit_code == 0, "exit code: {}, Exception: {}, Traceback: {}".format(result.exit_code, result.exception, result.exc_info)
         result = runner.invoke(macsec.macsec, ["port", "add", "Ethernet0", "test"], obj=cfgdb)
@@ -141,8 +141,8 @@ def test_macsec_invalid_operation(self, mock_cfgdb):
         result = runner.invoke(macsec.macsec, ["profile", "del", "test"], obj=cfgdb)
         assert result.exit_code != 0
 
-        result = runner.invoke(macsec.macsec, ["profile", "add", "test", "--primary_cak=01234567890123456789012345678912","--primary_ckn=01234567890123456789012345678912"], obj=cfgdb)
+        result = runner.invoke(macsec.macsec, ["profile", "add", "test", "--primary_cak=2363647040534355560e000802065d574d400e000e030307075f0e5050000e5541","--primary_ckn=01234567890123456789012345678912"], obj=cfgdb)
         assert result.exit_code == 0, "exit code: {}, Exception: {}, Traceback: {}".format(result.exit_code, result.exception, result.exc_info)
         # Repeat add profile
-        result = runner.invoke(macsec.macsec, ["profile", "add", "test", "--primary_cak=01234567890123456789012345678912","--primary_ckn=01234567890123456789012345678912"], obj=cfgdb)
+        result = runner.invoke(macsec.macsec, ["profile", "add", "test", "--primary_cak=2363647040534355560e000802065d574d400e000e030307075f0e5050000e5541","--primary_ckn=01234567890123456789012345678912"], obj=cfgdb)
         assert result.exit_code != 0
diff --git a/dockers/docker-macsec/cli/config/plugins/macsec.py b/dockers/docker-macsec/cli/config/plugins/macsec.py
index 1b820dfd0e99..9f5ac5bd7bc4 100644
--- a/dockers/docker-macsec/cli/config/plugins/macsec.py
+++ b/dockers/docker-macsec/cli/config/plugins/macsec.py
@@ -137,11 +137,11 @@ def add_profile(profile, priority, cipher_suite, primary_cak, primary_ckn, polic
     profile_table["cipher_suite"] = cipher_suite
 
     if "128" in cipher_suite:
-        if len(primary_cak) != 32:
-            ctx.fail("Expect the length of CAK is 32, but got {}".format(len(primary_cak)))
+        if len(primary_cak) != 66:
+            ctx.fail("Expect the length of CAK is 66, but got {}".format(len(primary_cak)))
     elif "256" in cipher_suite:
-        if len(primary_cak) != 64:
-            ctx.fail("Expect the length of CAK is 64, but got {}".format(len(primary_cak)))
+        if len(primary_cak) != 130:
+            ctx.fail("Expect the length of CAK is 130, but got {}".format(len(primary_cak)))
     if not is_hexstring(primary_cak):
         ctx.fail("Expect the primary_cak is valid hex string")
     if not is_hexstring(primary_ckn):
diff --git a/files/scripts/arp_update b/files/scripts/arp_update
index f267e05a54cc..14a82ebe4da3 100755
--- a/files/scripts/arp_update
+++ b/files/scripts/arp_update
@@ -25,29 +25,35 @@ while /bin/true; do
       for i in ${!STATIC_ROUTE_NEXTHOPS[@]}; do
           nexthop="${STATIC_ROUTE_NEXTHOPS[i]}"
           if [[ $nexthop == *"."* ]]; then
-              neigh_state=( $(ip -4 neigh show | grep -w $nexthop | tr -s ' ' | cut -d ' ' -f 3,4) )
+              neigh_state=$(ip -4 neigh show | grep -w $nexthop | tr -s ' ')
               ping_prefix=ping
           elif [[ $nexthop == *":"* ]] ; then
-              neigh_state=( $(ip -6 neigh show | grep -w $nexthop | tr -s ' ' | cut -d ' ' -f 3,4) )
+              neigh_state=$(ip -6 neigh show | grep -w $nexthop | tr -s ' ')
               ping_prefix=ping6
           fi
-          if [[ -z "${neigh_state}" ]] || [[ "${neigh_state[1]}" == "INCOMPLETE" ]] || [[ "${neigh_state[1]}" == "FAILED" ]]; then
+          # Check if there is an INCOMPLETE, FAILED, or STALE entry and try to resolve it again.
+          # STALE entries may be present if there is no traffic on a path. A far-end down event may not
+          # clear the STALE entry. Refresh the STALE entry to clear the table.
+          if [[ -z "${neigh_state}" ]] || [[ -n $(echo ${neigh_state} | grep 'INCOMPLETE\|FAILED\|STALE') ]]; then
               interface="${STATIC_ROUTE_IFNAMES[i]}"
               if [[ -z "$interface" ]]; then
                   # should never be here, handling just in case
                   logger "ERR: arp_update: missing interface entry for static route $nexthop"
-                  interface=${neigh_state[0]}
+                  continue
               fi
               intf_up=$(ip link show $interface | grep "state UP")
               if [[ -n "$intf_up" ]]; then
                   pingcmd="timeout 0.2 $ping_prefix -I ${interface} -n -q -i 0 -c 1 -W 1 $nexthop >/dev/null"
                   eval $pingcmd
-                  logger "arp_update: static route nexthop not resolved, pinging $nexthop on ${neigh_state[0]}"
+                  # STALE entries may appear more often, not logging to prevent periodic syslogs
+                  if [[ -z $(echo ${neigh_state} | grep 'STALE') ]]; then
+                      logger "arp_update: static route nexthop not resolved ($neigh_state), pinging $nexthop on $interface"
+                  fi
               fi
           fi
       done
 
-      sleep 300
+      sleep 150
       continue
   fi
   # find L3 interfaces which are UP, send ipv6 multicast pings
diff --git a/platform/broadcom/sonic-platform-modules-nokia b/platform/broadcom/sonic-platform-modules-nokia
index c976714e3f39..af640254883f 160000
--- a/platform/broadcom/sonic-platform-modules-nokia
+++ b/platform/broadcom/sonic-platform-modules-nokia
@@ -1 +1 @@
-Subproject commit c976714e3f39fc22b5c616ae0f4aadbd2bd4360f
+Subproject commit af640254883fd39489e32cc1a13908d82da3833a
diff --git a/src/sonic-config-engine/tests/macsec_profile.json b/src/sonic-config-engine/tests/macsec_profile.json
index b70f1a052128..87e633e49b9d 100644
--- a/src/sonic-config-engine/tests/macsec_profile.json
+++ b/src/sonic-config-engine/tests/macsec_profile.json
@@ -2,18 +2,18 @@
     "MACSEC_PROFILE":{
         "macsec-profile": {
             "cipher_suite": "GCM-AES-XPN-256",
-            "primary_cak": "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF",
+            "primary_cak": "5207554155500e5d5157786d6c2a3d2031425a5e577e7e727f6b6c03312432262706080a00005b554f4e007975707670725b0a54540c0252445e5d7a29252b046a",
             "primary_ckn": "6162636465666768696A6B6C6D6E6F707172737475767778797A303132333435",
-            "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000",
+            "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
             "fallback_ckn": "1111111111111111111111111111111111111111111111111111111111111111",
             "priority": "0",
             "rekey_period": "60"
         },
         "macsec-profile2": {
             "cipher_suite": "GCM-AES-XPN-256",
-            "primary_cak": "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF",
+            "primary_cak": "5207554155500e5d5157786d6c2a3d2031425a5e577e7e727f6b6c03312432262706080a00005b554f4e007975707670725b0a54540c0252445e5d7a29252b046a",
             "primary_ckn": "6162636465666768696A6B6C6D6E6F707172737475767778797A303132333435",
-            "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000",
+            "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
             "fallback_ckn": "1111111111111111111111111111111111111111111111111111111111111111",
             "priority": "0",
             "rekey_period": "60"
diff --git a/src/sonic-swss b/src/sonic-swss
index d787d50d9fcb..33d81e7feaeb 160000
--- a/src/sonic-swss
+++ b/src/sonic-swss
@@ -1 +1 @@
-Subproject commit d787d50d9fcbb050c6a87a40faede655f7e95f0e
+Subproject commit 33d81e7feaeb8e016d3a4cb3434da8d5506dc3a4
diff --git a/src/sonic-yang-models/tests/files/sample_config_db.json b/src/sonic-yang-models/tests/files/sample_config_db.json
index 01758961cbcd..93fe09c0ca59 100644
--- a/src/sonic-yang-models/tests/files/sample_config_db.json
+++ b/src/sonic-yang-models/tests/files/sample_config_db.json
@@ -1943,9 +1943,9 @@
             "test": {
                 "priority": "64",
                 "cipher_suite": "GCM-AES-128",
-                "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                 "primary_ckn": "6162636465666768696A6B6C6D6E6F70",
-                "fallback_cak": "00000000000000000000000000000000",
+                "fallback_cak": "000000000000000000000000000000000000000000000000000000000000000000",
                 "fallback_ckn": "11111111111111111111111111111111",
                 "policy": "security",
                 "enable_replay_protect": "true",
diff --git a/src/sonic-yang-models/tests/yang_model_tests/tests_config/macsec.json b/src/sonic-yang-models/tests/yang_model_tests/tests_config/macsec.json
index cfd7c512a67a..5c748606eed9 100644
--- a/src/sonic-yang-models/tests/yang_model_tests/tests_config/macsec.json
+++ b/src/sonic-yang-models/tests/yang_model_tests/tests_config/macsec.json
@@ -7,9 +7,9 @@
                         "name": "test32",
                         "priority": 64,
                         "cipher_suite": "GCM-AES-128",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70",
-                        "fallback_cak": "00000000000000000000000000000000",
+                        "fallback_cak": "000000000000000000000000000000000000000000000000000000000000000000",
                         "fallback_ckn": "11111111111111111111111111111111",
                         "policy": "security",
                         "enable_replay_protect": "true",
@@ -21,9 +21,9 @@
                         "name": "test64",
                         "priority": 64,
                         "cipher_suite": "GCM-AES-XPN-256",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "5207554155500e5d5157786d6c2a3d2031425a5e577e7e727f6b6c03312432262706080a00005b554f4e007975707670725b0a54540c0252445e5d7a29252b046a",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F706162636465666768696A6B6C6D6E6F70",
-                        "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000",
+                        "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
                         "fallback_ckn": "1111111111111111111111111111111111111111111111111111111111111111",
                         "policy": "security",
                         "enable_replay_protect": "true",
@@ -61,7 +61,7 @@
                     {
                         "name": "test",
                         "cipher_suite": "gcm-aes-128",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70"
                     }
                 ]
@@ -74,9 +74,9 @@
                 "MACSEC_PROFILE_LIST": [
                     {
                         "name": "test",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70",
-                        "fallback_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "fallback_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "fallback_ckn": "6162636465666768696A6B6C6D6E6F70"
                     }
                 ]
@@ -89,7 +89,7 @@
                 "MACSEC_PROFILE_LIST": [
                     {
                         "name": "test",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEFA",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d7",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70A"
                     }
                 ]
@@ -115,9 +115,9 @@
                 "MACSEC_PROFILE_LIST": [
                     {
                         "name": "test",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70",
-                        "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000",
+                        "fallback_cak": "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
                         "fallback_ckn": "1111111111111111111111111111111111111111111111111111111111111111"
                     }
                 ]
@@ -130,7 +130,7 @@
                 "MACSEC_PROFILE_LIST": [
                     {
                         "name": "test",
-                        "primary_cak": "0123456789ABCDEF0123456789ABCDEF",
+                        "primary_cak": "1159485744465e5a537272050a1011073557475152020c0e040c57223a357d7d71",
                         "primary_ckn": "6162636465666768696A6B6C6D6E6F70",
                         "replay_window": 64
                     }
diff --git a/src/sonic-yang-models/yang-models/sonic-macsec.yang b/src/sonic-yang-models/yang-models/sonic-macsec.yang
index 4e3412f86a3d..f4ce318822bf 100644
--- a/src/sonic-yang-models/yang-models/sonic-macsec.yang
+++ b/src/sonic-yang-models/yang-models/sonic-macsec.yang
@@ -46,7 +46,7 @@ module sonic-macsec {
 
                 leaf primary_cak {
                     type string {
-                        pattern "[0-9a-fA-F]{32}|[0-9a-fA-F]{64}";
+                        pattern "[0-9a-fA-F]{66}|[0-9a-fA-F]{130}";
                     }
                     mandatory true;
                 }
@@ -60,7 +60,7 @@ module sonic-macsec {
 
                 leaf fallback_cak {
                     type string {
-                        pattern "[0-9a-fA-F]{32}|[0-9a-fA-F]{64}";
+                        pattern "[0-9a-fA-F]{66}|[0-9a-fA-F]{130}";
                     }
                 }
 
@@ -70,10 +70,6 @@ module sonic-macsec {
                     }
                 }
 
-                must "string-length(primary_cak) = string-length(primary_ckn)";
-
-                must "string-length(fallback_cak) = string-length(fallback_ckn)";
-
                 must "string-length(fallback_cak) = string-length(primary_cak)";
 
                 must "primary_ckn != fallback_ckn";