Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Unicast Traffic - Revision history

Jeffrlee at 22:08, 13 March 2013

2013-03-13T22:08:25Z

← Older revision		Revision as of 22:08, 13 March 2013
Line 27:		Line 27:
	\|align="center"\|'''Guide Contents'''		\|align="center"\|'''Guide Contents'''
	\|-		\|-
-	\|[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Overview\|Troubleshooting Overview]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Installs, Upgrades, and Reboots\|Troubleshooting Installs, Upgrades, and Reboots]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Licensing\|Troubleshooting Licensing]]'<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VDCs\|Troubleshooting VDCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting CFS\|Troubleshooting CFS]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Ports\|Troubleshooting Ports]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting vPCs\|Troubleshooting vPCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VLANs\|Troubleshooting VLANs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting STP\|Troubleshooting STP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Routing\|Troubleshooting Routing]]<br>''Troubleshooting Unicast Traffic(this section)''<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting WCCP\|Troubleshooting WCCP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Memory\|Troubleshooting Memory]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Packet Flow Issues\|Troubleshooting Packet Flow Issues]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Before Contacting Technical Support\|Before Contacting Technical Support]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Tools and Methodology\|Troubleshooting Tools and Methodology]]	+	\|[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Overview\|Troubleshooting Overview]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Installs, Upgrades, and Reboots\|Troubleshooting Installs, Upgrades, and Reboots]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Licensing\|Troubleshooting Licensing]]'<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VDCs\|Troubleshooting VDCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting CFS\|Troubleshooting CFS]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Ports\|Troubleshooting Ports]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting vPCs\|Troubleshooting vPCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VLANs\|Troubleshooting VLANs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting STP\|Troubleshooting STP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Routing\|Troubleshooting Routing]]<br>''Troubleshooting Unicast Traffic(this section)''<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting WCCP\|Troubleshooting WCCP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Memory\|Troubleshooting Memory]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Packet Flow Issues\|Troubleshooting Packet Flow Issues]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting FCoE\|Troubleshooting FCoE]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Before Contacting Technical Support\|Before Contacting Technical Support]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Tools and Methodology\|Troubleshooting Tools and Methodology]]
	\|}		\|}

Sukumars at 21:23, 30 November 2011

2011-11-30T21:23:36Z

← Older revision		Revision as of 21:23, 30 November 2011
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	{{Template:Required Metadata}}		{{Template:Required Metadata}}
-	This article provides information on how to troubleshoot unicast packet flow traffic issues for the M1 Series modules.	+
		+
		+	This article below provides only basic information on how to troubleshoot unicast packet flow traffic issues for the M1 Series modules.
		+
		+	Troubleshooting L2/L3 unicast is covered in detail in Cisco-Live presentation. Sections of this presentation covers,
		+	both platform independent, and platform specific step by step troubleshooting for unicast, among other things. Access to
		+	this presentation is available FREE. Follow the below instructions to access the presentation
		+
		+
		+	1. Visit https://www.ciscolivevirtual.com/
		+
		+	2. Register for free.
		+
		+	3. Click on "Cisco Live Virtual" link.
		+
		+	4. Click on the ‘Sessions’ Tab on top, and select ‘2011 Sessions Catalog’
		+
		+	5. In the search box, type “BRKCRS-3144” and Submit search.
		+
		+	6. Select the session. You can either View the Session (or) download the pdf.
		+
		+	7. Unicast troubleshooting is covered from slides 81 through 93.
		+

	{\| align="right" border="1"		{\| align="right" border="1"

Sdurham at 17:56, 29 November 2010

2010-11-29T17:56:06Z

Show changes

Sdurham: Removing all content from page

2010-10-07T15:13:44Z

Removing all content from page

Show changes

Sdurham at 15:09, 7 October 2010

2010-10-07T15:09:49Z

← Older revision		Revision as of 15:09, 7 October 2010
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	\|align="center"\|'''Guide Contents'''		\|align="center"\|'''Guide Contents'''
	\|-		\|-
-	\|[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Overview\|Troubleshooting Overview]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Installs, Upgrades, and Reboots\|Troubleshooting Installs, Upgrades, and Reboots]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Licensing\|Troubleshooting Licensing]]'<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VDCs\|Troubleshooting VDCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting CFS\|Troubleshooting CFS]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Ports\|Troubleshooting Ports]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting vPCs\|Troubleshooting vPCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VLANs\|Troubleshooting VLANs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting STP\|Troubleshooting STP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Routing\|Troubleshooting Routing]]<br>''Troubleshooting ~~Licensing~~ (this section)''<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting WCCP\|Troubleshooting WCCP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Memory\|Troubleshooting Memory]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Packet Flow Issues\|Troubleshooting Packet Flow Issues]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Before Contacting Technical Support\|Before Contacting Technical Support]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Tools and Methodology\|Troubleshooting Tools and Methodology]]	+	\|[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Overview\|Troubleshooting Overview]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Installs, Upgrades, and Reboots\|Troubleshooting Installs, Upgrades, and Reboots]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Licensing\|Troubleshooting Licensing]]'<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VDCs\|Troubleshooting VDCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting CFS\|Troubleshooting CFS]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Ports\|Troubleshooting Ports]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting vPCs\|Troubleshooting vPCs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting VLANs\|Troubleshooting VLANs]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting STP\|Troubleshooting STP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Routing\|Troubleshooting Routing]]<br>''Troubleshooting Unicast Traffic(this section)''<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting WCCP\|Troubleshooting WCCP]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Memory\|Troubleshooting Memory]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Packet Flow Issues\|Troubleshooting Packet Flow Issues]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Before Contacting Technical Support\|Before Contacting Technical Support]]<br>[[Cisco Nexus 7000 Series NX-OS Troubleshooting Guide -- Troubleshooting Tools and Methodology\|Troubleshooting Tools and Methodology]]
	\|}		\|}

Sdurham: /* Step 4: Layer 2 Source/Destination MAC Processing= */

2010-10-07T15:08:13Z

Step 4: Layer 2 Source/Destination MAC Processing=

← Older revision		Revision as of 15:08, 7 October 2010
Line 284:		Line 284:


-	==Step 4: Layer 2 Source/Destination MAC Processing===	+	==Step 4: Layer 2 Source/Destination MAC Processing==

	In this step, the ASIC submits the packet headers to theLayer 2 engine for lookup, and the Layer 2 engine performs source/destination MAC processing.		In this step, the ASIC submits the packet headers to theLayer 2 engine for lookup, and the Layer 2 engine performs source/destination MAC processing.
Line 361:		Line 361:

	1 1 2 '''000c.294b.c5ca 0x00422''' 0 3 0 67 1 0		1 1 2 '''000c.294b.c5ca 0x00422''' 0 3 0 67 1 0
-	0 0 0 0 0 0 0 0	+	0 0 0 0 0 0 0 0

Sdurham: /* Step 4: Layer 2 Source/Destination MAC Processing */

2010-10-07T15:06:35Z

Step 4: Layer 2 Source/Destination MAC Processing

← Older revision		Revision as of 15:06, 7 October 2010
Line 283:		Line 283:
	* '''show policy-map interface'''		* '''show policy-map interface'''

-	===Step 4: Layer 2 Source/Destination MAC Processing===	+
		+	==Step 4: Layer 2 Source/Destination MAC Processing===

	In this step, the ASIC submits the packet headers to theLayer 2 engine for lookup, and the Layer 2 engine performs source/destination MAC processing.		In this step, the ASIC submits the packet headers to theLayer 2 engine for lookup, and the Layer 2 engine performs source/destination MAC processing.
Line 301:		Line 302:
	* '''show mac address-table \| grep''' ''macaddress''		* '''show mac address-table \| grep''' ''macaddress''
	* '''show hardware mac address-table''' ''module'' '''interface''' ''interface'' \| '''grep''' ''macaddress''		* '''show hardware mac address-table''' ''module'' '''interface''' ''interface'' \| '''grep''' ''macaddress''
		+
		+	{note\|When evaluating the Hardware mac table, if the Index is set to 0x00400, or the GM bit is set to “1”, that traffic will be routed. For example, you will see the index set to 0x00400 and GM bit set to 1 for traffic destined to the mac address local to the device}
		+
		+	PHX2-N7K-1# '''show mac address-table'''
		+	Legend:
		+	* - primary entry, G - Gateway MAC, (R) - Routed MAC
		+	age - seconds since last seen,+ - primary entry using vPC Peer-Link
		+	VLAN MAC Address Type age Secure NTFY Ports
		+	---------+-----------------+--------+---------+------+------+----------------
		+	G - 0023.ac67.dd41 static - False False sup-eth1(R)
		+	G 5 0023.ac67.dd41 static - False False sup-eth1(R)
		+	* 5 0000.0c07.ac01 dynamic 0 False False Eth1/1
		+	* 5 000c.2943.a67e dynamic 180 False False Eth1/1
		+	* 5 '''000c.294b.c5ca''' dynamic 0 False False '''Eth1/1'''
		+	* 5 000d.ece2.0640 dynamic 180 False False Eth1/1
		+	* 5 0013.5f32.aa80 dynamic 0 False False Eth1/1
		+	* 5 0018.8b45.41b7 dynamic 0 False False Eth1/1
		+	* 5 0019.bb2f.4871 dynamic 0 False False Eth1/1
		+	* 5 0019.bbe5.f3b8 dynamic 1230 False False Eth1/1
		+	* 5 001a.4b33.ccdc dynamic 1080 False False Eth1/1
		+	* 5 001a.4ba8.6a9c dynamic 1680 False False Eth1/1
		+	* 5 001b.210a.87f9 dynamic 600 False False Eth1/1
		+	* 5 001b.d46f.70e0 dynamic 60 False False Eth1/1
		+	* 5 001c.c4e5.ac9a dynamic 150 False False Eth1/1
		+	* 5 0023.ac64.6f7c dynamic 1230 False False Eth1/1
		+	* 5 0024.986d.21c8 dynamic 270 False False Eth1/1
		+
		+
		+	PHX2-N7K-1# sho hardware mac address-table 1 int eth1/1
		+	Valid\| PI \| BD \| MAC \| Index \| Stat\| SW \| Modi\| Age \| Tmr \| GM \| Sec\|
		+	TR \| NT \| RM \| RMA \| Cap \| Fld \| Always \| \| \| \|
		+	\| ic \| \| fied\| Byte\| Sel \| \| ure\| AP \| FY \| \| \| TURE\| \| Learn
		+	-----+----+-------+---------------+--------+-----+----+-----+-----+-----+----+--
		+	--+----+----+----+-----+-----+-----+--------
		+	1 1 2 '''000c.294b.c5ca''' 0x00422 0 3 0 67 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 0050.567e.58e6 0x00422 0 3 0 68 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 0050.56aa.6067 0x00422 0 3 0 67 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 00c0.b72e.cfa0 0x00422 0 3 0 67 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 0018.8b45.41b7 0x00422 0 3 0 68 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 0013.5f32.aa80 0x00422 0 3 0 68 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 0050.56aa.75ca 0x00422 0 3 0 64 1 0
		+	0 0 0 0 0 0 0 0
		+	1 1 2 00a0.9811.a233 0x00422 0 3 0 39 1 0
		+	0 0 0 0 0 0 0 0
		+
		+
		+	PHX2-N7K-1# '''show mac address-table \| grep 000c.294b.c5ca'''
		+	* 5 000c.294b.c5ca dynamic 150 False False '''Eth1/1'''
		+
		+
		+	PHX2-N7K-1# '''show hardware mac address-table 1 int eth 1/1 \| grep 000c.294b.c5ca'''
		+
		+	1 1 2 '''000c.294b.c5ca 0x00422''' 0 3 0 67 1 0
		+	0 0 0 0 0 0 0 0

Sdurham: /* Step 2: Linksec Decryption Occurs, 1st stage Port QoS */

2010-10-07T15:01:55Z

Step 2: Linksec Decryption Occurs, 1st stage Port QoS

← Older revision		Revision as of 15:01, 7 October 2010
Line 270:		Line 270:
	bandwidth remaining percent 25		bandwidth remaining percent 25
	''' queue dropped pkts : 0'''		''' queue dropped pkts : 0'''
		+
		+
		+	==Step 3: Second Stage Port QoS Occurs==
		+
		+	For the ingress QoS, we are concerned about the Receive side QoS parameters in the show queuing command.
		+
		+	Use the '''show policy-map''' command to view queue drops .
		+
		+	The commands to troubleshoot Port QoS are
		+
		+	* '''show queuing interface''' ''interface''
		+	* '''show policy-map interface'''
		+
		+	===Step 4: Layer 2 Source/Destination MAC Processing===
		+
		+	In this step, the ASIC submits the packet headers to theLayer 2 engine for lookup, and the Layer 2 engine performs source/destination MAC processing.
		+
		+	To validate forwarding of the Layer 2 engine, we should first look at the centralized mac table aggregated on the supervisor to validate whether the mac addresses are correlated as we expect them, and assigned to the ports where we expect the Mac’s to reside.
		+
		+	Based off of this, we can then validate the hardware programming on the ingress linecard to validate that our mac address table is properly programmed into the hardware based Layer 2 engine on the linecard.
		+
		+	We first will look at the mac address table, then we can ensure programming is properly occurring in the hardware table.
		+
		+	The commands used to accomplish this are as follows:
		+	* '''show mac address-table'''
		+	* '''show hardware mac address-table''' ''module'' '''interface''' ''interface''
		+
		+	To drill down on a specific MAC address, we can use the grep function with these commands to validate the mac is associated with a particular port, and that the hardware programming reflects that.
		+
		+	* '''show mac address-table \| grep''' ''macaddress''
		+	* '''show hardware mac address-table''' ''module'' '''interface''' ''interface'' \| '''grep''' ''macaddress''

Sdurham: /* Step 2: Linksec Decryption Occurs, 1st stage Port QoS */

2010-10-07T14:41:17Z

Step 2: Linksec Decryption Occurs, 1st stage Port QoS

← Older revision		Revision as of 14:41, 7 October 2010
Line 237:		Line 237:
	Global statistics status : enabled		Global statistics status : enabled
	Ethernet1/2		Ethernet1/2
-	Service-policy (queuing) input: default-in-policy	+	Service-policy (queuing) '''input:''' default-in-policy
	policy statistics status: enabled		policy statistics status: enabled

Line 243:		Line 243:
	queue-limit percent 50		queue-limit percent 50
	bandwidth percent 80		bandwidth percent 80
-	queue dropped pkts : 0	+	'''queue dropped pkts : 0 '''

	Class-map (queuing): in-q-default (match-any)		Class-map (queuing): in-q-default (match-any)
	queue-limit percent 50		queue-limit percent 50
	bandwidth percent 20		bandwidth percent 20
-	queue dropped pkts : 0	+	'''queue dropped pkts : 0'''

-	Service-policy (queuing) output: default-out-policy	+	Service-policy (queuing) '''output: ''' default-out-policy
	policy statistics status: enabled		policy statistics status: enabled

Line 256:		Line 256:
	priority level 1		priority level 1
	queue-limit percent 16		queue-limit percent 16
-	queue dropped pkts : 0	+	'''queue dropped pkts : 0'''

	Class-map (queuing): out-q2 (match-any)		Class-map (queuing): out-q2 (match-any)
	queue-limit percent 1		queue-limit percent 1
-	queue dropped pkts : 0	+	''' queue dropped pkts : 0'''

	Class-map (queuing): out-q3 (match-any)		Class-map (queuing): out-q3 (match-any)
	queue-limit percent 1		queue-limit percent 1
-	queue dropped pkts : 0	+	''' queue dropped pkts : 0 '''

	Class-map (queuing): out-q-default (match-any)		Class-map (queuing): out-q-default (match-any)
	queue-limit percent 82		queue-limit percent 82
	bandwidth remaining percent 25		bandwidth remaining percent 25
-	queue dropped pkts : 0	+	''' queue dropped pkts : 0'''

Sdurham: /* Step 1: Packet is Received into Interface from Wire */

2010-10-07T14:39:28Z

Step 1: Packet is Received into Interface from Wire

← Older revision		Revision as of 14:39, 7 October 2010
Line 14:		Line 14:
	During this step, the packet is received into the Nexus 7000 port. When troubleshooting this step, we want to look to ensure there is transceiver interoperability, and validate whether we are seeing any errors on the interface. We do this via using the following commands		During this step, the packet is received into the Nexus 7000 port. When troubleshooting this step, we want to look to ensure there is transceiver interoperability, and validate whether we are seeing any errors on the interface. We do this via using the following commands

-	* '''show interface''' <''interface''>	+	* '''show interface''' ''interface''
-	* '''show interface''' <''interface''> '''transceiver'''	+	* '''show interface''' ''interface'' '''transceiver'''

	PHX2-N7K-1# '''show interface e1/1'''		PHX2-N7K-1# '''show interface e1/1'''
Line 80:		Line 80:
	----------------------------------------------------------------------------		----------------------------------------------------------------------------
	Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning		Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning
-
-

	==Step 2: Linksec Decryption Occurs, 1st stage Port QoS==		==Step 2: Linksec Decryption Occurs, 1st stage Port QoS==