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Cisco Bug: CSCvi07117 - MTS buffers leak on SAP 407 CoPP from SAP 27 SNMP Response opcode 7679

Last Modified

Dec 03, 2019

Products (12)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5624Q Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5548UP Switch
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Known Affected Releases


Description (partial)

MTS buffers leak observed on Nexus 5000/6000/9000 switches.
Nexus5600# show system internal mts buffer summary
node	sapno	recv_q	pers_q	npers_q	log_q
sup	407	0	16870	0	0
Nexus5600# show system internal mts buffer detail
Node/Sap/queue	Age(ms)        	SrcNode   	SrcSAP	DstNode   	DstSAP	OPC	MsgId	MsgSize	RRToken	Offset
sup/407/pers	146529         	0x101       	27	0x101       	407	7679	0x12d18a9f	204	0x12d18a9f	0x3d54c04
Nexus5600# show system internal mts sup sap 27 description
SNMP Response SAP
Nexus5600# show system internal mts sup sap 407 description
Copp SAP
Nexus5600# show system internal mts opcodes | i i 7679

The trigger occurs when performing a snmpget of an OID without any instance/index number specified.
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