High Memory Usage Caused by CDP WLC 5500

athan1234 · ‎11-17-2025

Hi everyone,

I’m currently experiencing an issue with a legacy controller model. The problem is related to the cdp process — even though this controller does not officially support that feature, the process is still running and consuming a significant amount of memory.

I can still access the device through HTTP and SSH, but only on the secondary (standby) unit. From there, I am unable to stop the cdp process.

BEFORE DISBALING CDP

(Cisco Controller) >show process cpu hi

---------------------------------- System CPU Process ---------------------------------
Current Time:Sun Nov 13 13:57:49 2016 - System UP Time:263 days 23 hrs 54 mins 42 secs (Time: 22808927 Secs)
ReaperTick: 2272703 ReaperWatcherTick: 760189 ReaperTrigger:0 ReaperState:1 reaperExitTick:2271491
Last Reaper Tick :2016-11-13 12:57:49.025727 Last Reaper Watcher Tick :2016-11-13 12:57:46.565708
Name PID Priority CPU Use (usr/sys)% hwm CPU Reaper

System Reset Task 1708 (240/ 7) 0 ( 0/ 0)% 0 6
reaperWatcher 1707 ( 3/ 96) 0 ( 0/ 0)% 0 0 I
osapiReaper 1706 ( 10/ 94) 0 ( 0/ 0)% 0 0 I
TempStatus 1705 (240/ 7) 0 ( 0/ 0)% 0 9 I
pktDebugSocketTask 1689 (255/ 1) 0 ( 0/ 0)% 0 2
webauthRedirect 1688 (240/ 7) 0 ( 0/ 0)% 0 6
emWeb 1687 (240/ 7) 0 ( 0/ 0)% 99 8 T 300
mdnsHATask 1685 (240/ 7) 0 ( 0/ 0)% 0 4
Bonjour_Socket_Tas 1684 (240/ 7) 0 ( 0/ 0)% 0 5
Bonjour_Process_Ta 1683 (174/ 32) 0 ( 0/ 0)% 0 3
Bonjour_Msg_Task 1682 (174/ 32) 0 ( 0/ 0)% 0 3
portalMsgTask 1680 (240/ 7) 0 ( 0/ 0)% 0 2
portalMonitorMsgTa 1681 (240/ 7) 0 ( 0/ 0)% 0 3
portalSockTask 1679 (240/ 7) 0 ( 0/ 0)% 0 9
PMIPV6_Thread_3 1678 (240/ 7) 0 ( 0/ 0)% 0 7

--More-- or (q)uit
PMIPV6_Thread_2 1677 (240/ 7) 0 ( 0/ 0)% 0 9
PMIPV6_Thread_1 1676 (240/ 7) 0 ( 0/ 0)% 0 7
PMIPV6_Thread_0 1675 (240/ 7) 0 ( 0/ 0)% 0 6
hotspotTask 1674 (100/ 60) 0 ( 0/ 0)% 0 5
IPv6_Msg_Task 1671 ( 65/ 73) 0 ( 0/ 0)% 0 2
HAConfigSyncTask 1673 (240/ 7) 0 ( 0/ 0)% 0 9
ipv6SocketTask 1672 (240/ 7) 0 ( 0/ 0)% 0 3
sisfSwitcherTask 1668 (174/ 32) 0 ( 0/ 0)% 0 3
SISF BT Process 1667 (174/ 32) 0 ( 0/ 0)% 0 3
SISF Feature Proce 1666 (240/ 7) 0 ( 0/ 0)% 0 3
fmcHsTask 1665 (100/ 60) 0 ( 0/ 0)% 0 7
alarmMsgTask 1664 (240/ 7) 0 ( 0/ 0)% 0 3
SXP SOCK 1663 (240/ 7) 0 ( 0/ 0)% 0 8
SXP CORE 1662 (240/ 7) 0 ( 0/ 0)% 0 3
apstatEngineTask 1661 (240/ 7) 0 ( 0/ 0)% 0 9
rrcEngineTask 1660 (240/ 7) 0 ( 0/ 0)% 0 8
spectrumDataTask 1657 (255/ 1) 0 ( 0/ 0)% 0 2
spectrumNMSPTask 1658 (255/ 1) 0 ( 0/ 0)% 0 2
wipsTask 1659 (240/ 7) 0 ( 0/ 0)% 0 6
Flex Task 1656 (240/ 7) 0 ( 0/ 0)% 0 1
ethoipOsapiMsgRcv 1655 (240/ 7) 0 ( 0/ 0)% 0 9
ethoipSocketTask 1654 (240/ 7) 0 ( 0/ 0)% 0 3
cids-cl Task 1653 (240/ 7) 0 ( 0/ 0)% 0 3

--More-- or (q)uit
tsmTask 1652 (255/ 1) 0 ( 0/ 0)% 0 8
envCtrollerStatus 1651 (240/ 7) 0 ( 0/ 0)% 0 3
rfidTask 1650 (240/ 7) 0 ( 0/ 0)% 0 7
bcastReceiveTask 1645 ( 71/ 71) 0 ( 0/ 0)% 0 1
idsTrackEventTask 1649 (239/ 0 ( 0/ 0)% 0 3
ProcessLoggingTask 1647 (240/ 7) 0 ( 0/ 0)% 0 5
DHCP Server 1648 ( 95/ 62) 0 ( 0/ 0)% 0 3
bcastDataTask 1646 ( 71/ 71) 0 ( 0/ 0)% 36 3
sntpMainTask 1642 (240/ 7) 0 ( 0/ 0)% 0 7
cdpSocketTask 1643 ( 71/ 71) 0 ( 0/ 0)% 0 2
CDP Main 1644 ( 71/ 71) 0 ( 0/ 0)% 0 2
sntpReceiveTask 1641 (240/ 7) 0 ( 0/ 0)% 0 7
rrmPeriodicTask 1640 (255/ 1) 0 ( 0/ 0)% 0 2
RRM-MGR-5_0 1639 ( 69/ 72) 0 ( 0/ 0)% 1 7
RRM-MGR-5_0-GRP 1638 (255/ 1) 0 ( 0/ 0)% 0 9
RRM-MGR-5_0-SOC 1637 ( 71/ 71) 0 ( 0/ 0)% 1 9
RRM-DCLNT-5_0 1636 ( 71/ 71) 0 ( 0/ 0)% 0 5
RRM-CLNT-5_0 1635 ( 75/ 69) 0 ( 0/ 0)% 1 1
RRM-CLNT-5_0-SOC 1634 ( 72/ 70) 0 ( 0/ 0)% 0 9
RRM-MGR-2_4 1633 ( 69/ 72) 0 ( 0/ 0)% 1 1
RRM-MGR-2_4-GRP 1632 (255/ 1) 0 ( 0/ 0)% 0 6
RRM-MGR-2_4-SOC 1631 ( 69/ 72) 0 ( 0/ 0)% 0 4
RRM-DCLNT-2_4 1630 ( 71/ 71) 0 ( 0/ 0)% 0 1

--More-- or (q)uit
RRM-CLNT-2_4-SOC 1628 ( 61/ 75) 0 ( 0/ 0)% 0 5
RRM-CLNT-2_4 1629 ( 1/ 97) 0 ( 0/ 0)% 1 3
haSSOServiceTask4 1624 ( 7/ 95) 0 ( 0/ 0)% 0 9
haSSOServiceTask5 1625 ( 62/ 74) 0 ( 0/ 0)% 0 8
haSSOServiceTask6 1626 ( 95/ 62) 0 ( 0/ 0)% 0 4
haSSOServiceTask7 1627 (240/ 7) 0 ( 0/ 0)% 0 5
haSSOServiceTask3 1623 ( 62/ 74) 0 ( 0/ 0)% 0 6
haSSOServiceTask2 1622 (240/ 7) 0 ( 0/ 0)% 0 2
haSSOServiceTask1 1621 (240/ 7) 0 ( 0/ 0)% 0 5
haSSOServiceTask0 1620 ( 7/ 95) 0 ( 0/ 0)% 0 4
Client Profiler Ta 1619 (240/ 7) 0 ( 0/ 0)% 0 8
apf80211vTask 1618 (240/ 7) 0 ( 0/ 0)% 0 4
RLDP Schedule Task 1616 (240/ 7) 0 ( 0/ 0)% 0 3
Apf Guest 1615 (240/ 7) 0 ( 0/ 0)% 0 5
apf80211KTask 1617 (240/ 7) 0 ( 0/ 0)% 0 9
apfPmkCacheTimer 1614 (240/ 7) 0 ( 0/ 0)% 0 3
apfMsConnTask_6 1612 ( 65/ 73) 0 ( 0/ 0)% 0 2
apfMsConnTask_7 1613 (175/ 32) 0 ( 0/ 0)% 0 5
apfMsConnTask_5 1611 (175/ 32) 0 ( 0/ 0)% 0 1
apfMsConnTask_4 1610 (175/ 32) 0 ( 0/ 0)% 0 5
apfMsConnTask_1 1607 (175/ 32) 0 ( 0/ 0)% 0 2
apfMsConnTask_2 1608 ( 32/ 85) 0 ( 0/ 0)% 0 2
apfMsConnTask_3 1609 ( 85/ 65) 0 ( 0/ 0)% 0 4

--More-- or (q)uit
apfMsConnTask_0 1606 (175/ 32) 0 ( 0/ 0)% 0 4
apfLbsTask 1605 ( 62/ 74) 0 ( 0/ 0)% 0 6
apfRogueTask_3 1604 ( 62/ 74) 0 ( 0/ 0)% 0 3
apfRogueTask_1 1602 (240/ 7) 0 ( 0/ 0)% 0 3
apfRogueTask_2 1603 (240/ 7) 0 ( 0/ 0)% 0 2
apfProbeThread 1598 ( 71/ 71) 0 ( 0/ 0)% 1 3
apfOrphanSocketTas 1599 (240/ 7) 0 ( 0/ 0)% 0 2
apfRogueDetectorTh 1600 (175/ 32) 0 ( 0/ 0)% 0 9
apfRogueTask_0 1601 ( 71/ 71) 0 ( 0/ 0)% 0 1
apfOpenDtlSocket 1597 ( 71/ 71) 0 ( 0/ 0)% 2 5
apfRLDP 1596 (175/ 32) 0 ( 0/ 0)% 0 3
apfRLDPRecv 1595 (175/ 32) 0 ( 0/ 0)% 0 3
apfReceiveTask 1594 (175/ 32) 0 ( 0/ 0)% 0 3
NFV9_Task 1593 ( 7/ 95) 0 ( 0/ 0)% 0 1
capwapPingOsapiMsg 1591 (240/ 7) 0 ( 0/ 0)% 0 2
NBAR2_Task 1592 (240/ 7) 0 ( 0/ 0)% 29 8
capwapPingSocketTa 1590 (240/ 7) 0 ( 0/ 0)% 0 3
mmMfpTask 1589 (175/ 32) 0 ( 0/ 0)% 0 9
mobilityHATask 1588 (240/ 7) 0 ( 0/ 0)% 0 3
mmMobility 1587 ( 7/ 95) 0 ( 0/ 0)% 0 2
mmSSHPeerRegister 1586 (240/ 7) 0 ( 0/ 0)% 0 3
mmListen 1585 (180/ 30) 0 ( 0/ 0)% 0 3
radiusCoASupportTr 1581 (201/ 22) 0 ( 0/ 0)% 0 4

--More-- or (q)uit
tplusTransportThre 1582 (201/ 22) 0 ( 0/ 0)% 0 6
EAP_Framework_0 1583 (240/ 7) 0 ( 0/ 0)% 0 9
aaaQueueReader 1584 ( 74/ 70) 0 ( 0/ 0)% 0 3
radiusRFC3576Trans 1580 (201/ 22) 0 ( 0/ 0)% 0 7
radiusTransportThr 1579 (201/ 22) 0 ( 0/ 0)% 0 9
pemReceiveTask 1577 ( 95/ 62) 0 ( 0/ 0)% 0 3
ewmwebWebauth1 1578 (240/ 7) 0 ( 0/ 0)% 0 9
iappSocketTask 1576 ( 71/ 71) 0 ( 0/ 0)% 0 2
ccxDiagTask 1575 (240/ 7) 0 ( 0/ 0)% 0 3
ccxS69Task 1574 (240/ 7) 0 ( 0/ 0)% 0 3
ccxRmTask 1573 (230/ 11) 0 ( 0/ 0)% 0 5
dot1xSocketTask 1571 ( 95/ 62) 0 ( 0/ 0)% 0 5
ccxL2RoamTask 1572 ( 7/ 95) 0 ( 0/ 0)% 0 3
Dot1x_NW_MsgTask_7 1570 ( 7/ 95) 0 ( 0/ 0)% 0 5
Dot1x_NW_MsgTask_6 1569 (240/ 7) 0 ( 0/ 0)% 0 4
Dot1x_NW_MsgTask_5 1568 (240/ 7) 0 ( 0/ 0)% 0 4
Dot1x_NW_MsgTask_4 1567 ( 95/ 62) 0 ( 0/ 0)% 0 4
Dot1x_NW_MsgTask_3 1566 ( 7/ 95) 0 ( 0/ 0)% 0 5
Dot1x_NW_MsgTask_2 1565 ( 7/ 95) 0 ( 0/ 0)% 0 4
Dot1x_NW_MsgTask_1 1564 (240/ 7) 0 ( 0/ 0)% 0 1
Dot1x_NW_MsgTask_0 1563 ( 7/ 95) 0 ( 0/ 0)% 0 5
dot1xMsgTask 1562 (240/ 7) 0 ( 0/ 0)% 0 5
nmspTxServerTask 1561 (220/ 15) 0 ( 0/ 0)% 0 8

--More-- or (q)uit
nmspRxServerTask 1560 (200/ 22) 0 ( 0/ 0)% 0 6
capwapHATask 1559 ( 71/ 71) 0 ( 0/ 0)% 0 3
capwapSocketTask 1558 ( 71/ 71) 0 ( 0/ 0)% 4 5
spamApTask4 1554 ( 72/ 70) 0 ( 0/ 0)% 11 4
spamApTask5 1555 ( 71/ 71) 0 ( 0/ 0)% 9 5
spamApTask6 1556 ( 72/ 70) 0 ( 0/ 0)% 9 5
spamApTask7 1557 ( 71/ 71) 0 ( 0/ 0)% 9 2
spamApTask3 1553 ( 70/ 71) 0 ( 0/ 0)% 8 4
spamApTask2 1552 ( 68/ 72) 0 ( 0/ 0)% 8 4
spamApTask1 1551 ( 71/ 71) 0 ( 0/ 0)% 6 1
spamApTask0 1550 ( 71/ 71) 0 ( 0/ 0)% 11 5
spamSocketTask 1548 (175/ 32) 0 ( 0/ 0)% 0 5
spamReceiveTask 1549 ( 52/ 78) 0 ( 0/ 0)% 0 5
HAPeerToPeerCommTa 1543 ( 90/ 64) 0 ( 0/ 0)% 0 2
rsyncmgrHoldqTask 1540 ( 71/ 71) 0 ( 0/ 0)% 0 1
CHKPT Test client 1537 (240/ 7) 0 ( 0/ 0)% 0 6
rsyncmgrRcvqTask 1535 ( 73/ 70) 0 ( 0/ 0)% 0 3
genSyncTask 1536 (240/ 7) 0 ( 0/ 0)% 0 2
rfacMain 1528 ( 90/ 64) 0 ( 0/ 0)% 0 8
rsyncmgrXferTraspo 1527 ( 71/ 71) 0 ( 0/ 0)% 0 4
rsyncmgrXferMain 1526 (240/ 7) 0 ( 0/ 0)% 0 7
rsyncmgrIpcqTask 1523 ( 72/ 70) 0 ( 0/ 0)% 0 4
rmgrKeepAlive 1522 ( 80/ 67) 0 ( 0/ 0)% 0 5

--More-- or (q)uit
rmgrMain 1521 ( 71/ 71) 0 ( 0/ 0)% 4 5
rmgrPing 1520 ( 80/ 67) 0 ( 0/ 0)% 0 4
rmgrTransport 1519 ( 71/ 71) 0 ( 0/ 0)% 4 5
Dns_Msg_Task 1518 (240/ 7) 0 ( 0/ 0)% 0 1
mfpKeyRefreshTask 1517 (255/ 1) 0 ( 0/ 0)% 0 6
mfpTrapForwardTask 1516 (255/ 1) 0 ( 0/ 0)% 0 8
mfpEventTask 1515 (255/ 1) 0 ( 0/ 0)% 0 2
sshpmLscScepTask 1514 (100/ 60) 0 ( 0/ 0)% 0 9
sshpmLscTask 1513 (100/ 60) 0 ( 0/ 0)% 0 6
sshpmReceiveTask 1512 (175/ 32) 0 ( 0/ 0)% 0 3
sshpmMainTask 1511 ( 71/ 71) 0 ( 0/ 0)% 0 7
clientTroubleShoot 1510 (100/ 60) 0 ( 0/ 0)% 0 7
loggerMainTask 1502 ( 73/ 70) 0 ( 0/ 0)% 0 3
debugMainTask 1501 (200/ 22) 0 ( 0/ 0)% 0 2
dot3ad_lac_task 1494 (240/ 7) 0 ( 0/ 0)% 0 9
gccp_t 1493 (240/ 7) 0 ( 0/ 0)% 0 7
dot1dTimer 1492 (240/ 7) 0 ( 0/ 0)% 0 5 T 290
dot1dRecv 1491 (250/ 3) 0 ( 0/ 0)% 0 5
fdbTask 1490 (240/ 7) 0 ( 0/ 0)% 0 3
uart_session 1489 (240/ 7) 0 ( 0/ 0)% 0 4
StatsTask 1488 (240/ 7) 0 ( 0/ 0)% 0 3
broffu_SocketRecei 1487 ( 75/ 69) 0 ( 0/ 0)% 0 4
snmp_trap_msg_task 1471 (100/ 60) 0 ( 0/ 0)% 0 3

--More-- or (q)uit
RMONTask 1470 (240/ 7) 0 ( 0/ 0)% 0 6 I
SNMPTask 1468 ( 95/ 62) 0 ( 0/ 0)% 55 9
SNMPProcMon 1469 (240/ 7) 0 ( 0/ 0)% 0 8 T 290
DHCPv6 Proxy Task 1467 (240/ 7) 0 ( 0/ 0)% 0 3
DHCP Socket Task 1466 ( 71/ 71) 0 ( 0/ 0)% 5 1
DHCP Proxy Task 1465 (240/ 7) 0 ( 0/ 0)% 0 5
dhcpClientTimerTas 1463 (240/ 7) 0 ( 0/ 0)% 0 5
DHCP Client Task 1462 ( 7/ 95) 0 ( 0/ 0)% 0 4 T 590
BootP 1460 ( 71/ 71) 0 ( 0/ 0)% 0 8 T 290
TransferTask 1459 (240/ 7) 0 ( 0/ 0)% 0 7 I
osapiTimer 1458 ( 60/ 75) 0 ( 0/ 0)% 0 7 T 300
sim_task 1453 (100/ 60) 0 ( 0/ 0)% 0 1 I
nim_t 1442 (100/ 60) 0 ( 0/ 0)% 0 5
dtlArpTask 1439 ( 71/ 71) 0 ( 0/ 0)% 5 4
dtlDataLowTask 1440 ( 71/ 71) 0 ( 0/ 0)% 1 4
greTask 1441 ( 75/ 69) 0 ( 0/ 0)% 0 5
dtlTask 1438 (100/ 60) 0 ( 0/ 0)% 0 5
IPC Main Thread 1426 (240/ 7) 0 ( 0/ 0)% 0 8 I
IPC control Receiv 1425 (240/ 7) 0 ( 0/ 0)% 0 2 I
License Client Lib 1424 (240/ 7) 0 ( 0/ 0)% 0 7 I
sampStatsTask 1423 (240/ 7) 0 ( 0/ 0)% 0 9
sysapiprintf 1307 (240/ 7) 0 ( 0/ 0)% 0 2
osapiBsnTimer 1302 ( 70/ 71) 0 ( 0/ 0)% 0 1

--More-- or (q)uit
redXmlTransferMain 1157 (240/ 7) 0 ( 0/ 0)% 0 1
fp_main_task 1131 (240/ 7) 0 ( 0/ 0)% 0 3

AFTER DISABLING CDP

>show process cpu hi

---------------------------------- System CPU Process ---------------------------------
Current Time:Sun Nov 13 14:07:05 2016 - System UP Time:264 days 0 hrs 3 mins 58 secs (Time: 22809483 Secs)
ReaperTick: 2272758 ReaperWatcherTick: 760207 ReaperTrigger:0 ReaperState:1 reaperExitTick:2271546
Last Reaper Tick :2016-11-13 13:07:01.005708 Last Reaper Watcher Tick :2016-11-13 13:06:46.637709
Name PID Priority CPU Use (usr/sys)% hwm CPU Reaper

System Reset Task 1708 (240/ 7) 0 ( 0/ 0)% 0 6
reaperWatcher 1707 ( 3/ 96) 0 ( 0/ 0)% 0 0 I
osapiReaper 1706 ( 10/ 94) 0 ( 0/ 0)% 0 0 I
TempStatus 1705 (240/ 7) 0 ( 0/ 0)% 0 9 I
pktDebugSocketTask 1689 (255/ 1) 0 ( 0/ 0)% 0 2
webauthRedirect 1688 (240/ 7) 0 ( 0/ 0)% 0 6
emWeb 1687 (240/ 7) 0 ( 0/ 0)% 99 8 T 300
mdnsHATask 1685 (240/ 7) 0 ( 0/ 0)% 0 4
Bonjour_Socket_Tas 1684 (240/ 7) 0 ( 0/ 0)% 0 5
Bonjour_Process_Ta 1683 (174/ 32) 0 ( 0/ 0)% 0 3
Bonjour_Msg_Task 1682 (174/ 32) 0 ( 0/ 0)% 0 3
portalMsgTask 1680 (240/ 7) 0 ( 0/ 0)% 0 2
portalMonitorMsgTa 1681 (240/ 7) 0 ( 0/ 0)% 0 3
portalSockTask 1679 (240/ 7) 0 ( 0/ 0)% 0 9
PMIPV6_Thread_3 1678 (240/ 7) 0 ( 0/ 0)% 0 7

--More-- or (q)uit
PMIPV6_Thread_2 1677 (240/ 7) 0 ( 0/ 0)% 0 9
PMIPV6_Thread_1 1676 (240/ 7) 0 ( 0/ 0)% 0 7
PMIPV6_Thread_0 1675 (240/ 7) 0 ( 0/ 0)% 0 6
hotspotTask 1674 (100/ 60) 0 ( 0/ 0)% 0 5
IPv6_Msg_Task 1671 ( 65/ 73) 0 ( 0/ 0)% 0 6
HAConfigSyncTask 1673 (240/ 7) 0 ( 0/ 0)% 0 8
ipv6SocketTask 1672 (240/ 7) 0 ( 0/ 0)% 0 3
sisfSwitcherTask 1668 (174/ 32) 0 ( 0/ 0)% 0 3
SISF BT Process 1667 (174/ 32) 0 ( 0/ 0)% 0 3
SISF Feature Proce 1666 (240/ 7) 0 ( 0/ 0)% 0 3
fmcHsTask 1665 (100/ 60) 0 ( 0/ 0)% 0 6
alarmMsgTask 1664 (240/ 7) 0 ( 0/ 0)% 0 5
SXP SOCK 1663 (240/ 7) 0 ( 0/ 0)% 0 6 T 300
SXP CORE 1662 (240/ 7) 0 ( 0/ 0)% 0 3
apstatEngineTask 1661 (240/ 7) 0 ( 0/ 0)% 0 9
rrcEngineTask 1660 (240/ 7) 0 ( 0/ 0)% 0 5
spectrumDataTask 1657 (255/ 1) 0 ( 0/ 0)% 0 2
spectrumNMSPTask 1658 (255/ 1) 0 ( 0/ 0)% 0 2
wipsTask 1659 (240/ 7) 0 ( 0/ 0)% 0 6
Flex Task 1656 (240/ 7) 0 ( 0/ 0)% 0 1
ethoipOsapiMsgRcv 1655 (240/ 7) 0 ( 0/ 0)% 0 9
ethoipSocketTask 1654 (240/ 7) 0 ( 0/ 0)% 0 3
cids-cl Task 1653 (240/ 7) 0 ( 0/ 0)% 0 3

--More-- or (q)uit
tsmTask 1652 (255/ 1) 0 ( 0/ 0)% 0 6
envCtrollerStatus 1651 (240/ 7) 0 ( 0/ 0)% 0 3
rfidTask 1650 (240/ 7) 0 ( 0/ 0)% 0 8
bcastReceiveTask 1645 ( 71/ 71) 0 ( 0/ 0)% 0 8
idsTrackEventTask 1649 (239/ 0 ( 0/ 0)% 0 5
ProcessLoggingTask 1647 (240/ 7) 0 ( 0/ 0)% 0 5
DHCP Server 1648 ( 95/ 62) 0 ( 0/ 0)% 0 1
bcastDataTask 1646 ( 71/ 71) 1 ( 0/ 0)% 36 4
sntpMainTask 1642 (240/ 7) 0 ( 0/ 0)% 0 7
cdpSocketTask 1643 ( 71/ 71) 0 ( 0/ 0)% 0 2
CDP Main 1644 ( 71/ 71) 0 ( 0/ 0)% 0 5
sntpReceiveTask 1641 (240/ 7) 0 ( 0/ 0)% 0 7
rrmPeriodicTask 1640 (255/ 1) 0 ( 0/ 0)% 0 2
RRM-MGR-5_0 1639 ( 69/ 72) 0 ( 0/ 0)% 1 8
RRM-MGR-5_0-GRP 1638 (255/ 1) 0 ( 0/ 0)% 0 9
RRM-MGR-5_0-SOC 1637 ( 71/ 71) 0 ( 0/ 0)% 1 9
RRM-DCLNT-5_0 1636 ( 71/ 71) 0 ( 0/ 0)% 0 2
RRM-CLNT-5_0 1635 ( 75/ 69) 0 ( 0/ 0)% 1 5
RRM-CLNT-5_0-SOC 1634 ( 72/ 70) 0 ( 0/ 0)% 0 9
RRM-MGR-2_4 1633 ( 69/ 72) 0 ( 0/ 0)% 1 8
RRM-MGR-2_4-GRP 1632 (255/ 1) 0 ( 0/ 0)% 0 6
RRM-MGR-2_4-SOC 1631 ( 69/ 72) 0 ( 0/ 0)% 0 3

RRM-CLNT-2_4-SOC 1628 ( 61/ 75) 0 ( 0/ 0)%
tplusTransportThre 1582 (201/ 22) 0 ( 0/ 0)%
nmspRxServerTask 1560 (200/ 22) 0 ( 0/ 0)%
rmgrMain 1521 ( 71/ 71) 0 ( 0/ 0)% ?

Over the weekend, with the customer’s assistance, I was able to access the primary controller via console and manually disable the process. However, today I noticed that the standby controller — which is now acting as the primary — still shows very high memory usage.

So I have a couple of questions:

Since cdp is still active on the current standby unit, do I need to promote it to primary before I can disable the process there?
Will memory usage decrease automatically after disabling cdp , or will a reboot be required to free up the memory?

I’m attaching CPU and memory usage i logs from when I previously accessed the primary controller and disabled CDP, for reference.

This is the memory usage (not CPU) history on the secondary controller for the process named CDP MAIN.

Is there any recommended way to handle this issue? The memory consumption of the CDP process is quite critical. I’m not sure if disabling CDP alone will stabilize the memory usage, or if a reboot will also be required for the memory to be released.

Thanks in advance for your help!

Mark Elsen · ‎11-17-2025

- @athan1234 What is the exact controller model ?

M.

-- Let everything happen to you
   Beauty and terror
      Just keep going
     No feeling is final
Reiner Maria Rilke (1899)

athan1234 · ‎11-17-2025

Hi @Mark Elsen 5508

Mark Elsen · ‎11-17-2025

- @athan1234 The 5508 is 'hopelessly end of life' ; Cisco has now also retracted software downloads for it.
It should be replaced ASAP. In the meantime because of this , the current only leftover option
is reboot....
(you can for instance no longer upgrade to a fixed or last supported release)
M.

-- Let everything happen to you
   Beauty and terror
      Just keep going
     No feeling is final
Reiner Maria Rilke (1899)

Leo Laohoo · ‎11-17-2025

What firmware is the controller on?

athan1234 · ‎11-17-2025

Hi @Leo Laohoo

8.0.152.0

athan1234 · ‎11-17-2025

hi any idea ?

Mark Elsen · ‎11-17-2025

- @athan1234 It doesn't help to act if replies have never been written :
===> https://community.cisco.com/t5/wireless/high-memory-usage-caused-by-cdp-wlc-5500/m-p/5347561/highlight/true#M287467

M.

-- Let everything happen to you
   Beauty and terror
      Just keep going
     No feeling is final
Reiner Maria Rilke (1899)