Cisco Systems N3KC3064TFAL3, N3KC3048TP1GE manual Displaying Input Packet Discard Information

Configuring Ethernet Interfaces

Displaying Input Packet Discard Information

Trunk encap. type:	802.1Q
Channel:	yes
Broadcast suppression:	percentage(0-100)
Flowcontrol:	rx-(off/on),tx-(off/on)
Rate mode:	none
QOS scheduling:	rx-(6q1t),tx-(1p6q0t)
CoS rewrite:	no
ToS rewrite:	no
SPAN:	yes
UDLD:	yes
MDIX:	no
FEX Fabric:	yes

The following example shows how to display the physical Ethernet transceiver:

switch# show interface ethernet 1/1 transceiver Ethernet1/1

sfp is present

name is CISCO-EXCELIGHT part number is SPP5101SR-C1 revision is A

serial number is ECL120901AV nominal bitrate is 10300 MBits/sec

Link length supported for 50/125mm fiber is 82 m(s) Link length supported for 62.5/125mm fiber is 26 m(s) cisco id is --

cisco extended id number is 4

The following example shows how to display a brief interface status (some of the output has been removed for brevity):

switch# show interface brief

--------------------------------------------------------------------------------

Ethernet	VLAN	Type Mode Status Reason	Speed	Port
Interface				Ch #

--------------------------------------------------------------------------------

Eth1/1	200	eth	trunk	up	none	10G(D) --
Eth1/2	1	eth	trunk	up	none	10G(D) --
Eth1/3	300	eth	access	down	SFP not inserted	10G(D) --
Eth1/4	300	eth	access	down	SFP not inserted	10G(D) --
Eth1/5	300	eth	access	down	Link not connected	1000(D) --
Eth1/6	20	eth	access	down	Link not connected	10G(D) --
Eth1/7	300	eth	access down		SFP not inserted	10G(D) --
...

The following example shows how to display the CDP neighbors:

switch# show cdp neighbors			Trans-Bridge, B -	Source-Route-Bridge
Capability Codes: R	- Router, T -
S	-	Switch, H -	Host, I - IGMP, r	- Repeater,
V	-	VoIP-Phone,	D - Remotely-Managed-Device,

Device ID	s - Supports-STP-Dispute		Capability	Platform	Port ID
	Local Intrfce	Hldtme
d13-dist-1	mgmt0	148	S I	WS-C2960-24TC Fas0/9
n5k(FLC12080012)	Eth1/5	8	S I s	N5K-C5020P-BA	Eth1/5

Displaying Input Packet Discard Information

Beginning with Cisco NX-OS Release 5.0(3)U2(1), you can get detailed information on what specific condition led to an input discard on a given interface. Use the show hardware internal interface indiscard-statsfront-portx command to determine the condition that could be potentially responsible for the input discards that are seen on port eth1/x. The switch output shows the discards for IPv4, STP, input policy, ACL specific discard, generic receive drop, and VLAN related discards.

This example shows how to determine the condition that could be potentially responsible for the input discards:

switch# show hardware internal interface indiscard-stats front-port 1

Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)

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