Questions tagged [nx-os]

For questions about the NX-OS, where it is a network operating system for the Nexus-series Ethernet switches and MDS-series Fibre Channel storage area network switches made by Cisco Systems.

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MACsec encryption feature on Cisco NX-OSv 9000 Virtual Software?

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/nx-osv/configuration/guide/b_NX-OSv_9000/b_NX-OSv_chapter_01.html The above link only stated some examples of features which ...
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4 votes
1 answer
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N5K-5672 CoPP issue

I have a N5K-5672UP with enterprise license and I execute these commands to protect my control plane : control-plane service-policy input copp-system-policy-default There is 2 issues: When I execute ...
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access lists not working on n3k

i have a n3k-c3064pq-10gx with version 7.0(3)I7(9) Bios:version 4.5.0 version and i have 2x 10G SFP+ (LACP) from my carrier and here is my switch config : SWT(config-acl)# show ip access-lists uplink-...
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Nexus 3064 Sflow performance

We have a C3064PQ-10Gx with 10-12gbps bps and around 4m pps and we have in mind to enable sFlow to analyze the traffic, so i want to make sure if i enable sFlow it will not impact on the nexus CPU ...
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What is LLFC_PAUSE_FRAME in nexus?

Sometimes in my N3K i receive the following error : 2020 Oct 22 13:35:37 HOSTNAME %-SLOT1-2-BCM_SYSLOG_LLFC_PAUSE_FRAME: 972 LLFC pause frames received on Ethernet1/1 2020 Oct 22 13:35:39 HOSTNAME %-...
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1 answer
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nexus n3k %ACLQOS-SLOT1-4-ACLQOS_OVER_THRESHOLD alert

I have a n3k-c3064pq-10gx and when i execute show loggin it shows the following error : %ACLQOS-SLOT1-4-ACLQOS_OVER_THRESHOLD: Inst 0 Tcam 8 Bank 1's ((null)) usage has reached its threshol d i have ...
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C3064 Snmp High CPU Utilization

I have a N3K-C3064PQ-10GX and i have 350 Vlans on it and i am monitoring it from 2x server (one of them is observium and other one is prtg) and i have applied an acl on my uplink to drop snmp packets ...
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1 answer
54 views

cisco and mikrotik as console server

we have 2x Mikrotik CCR 1072 and CCR 1036 8G 2S+ and we have cisco nexus switches, so I want to connect the console port from one of the nexuses to the 1072 and connect other nexuses to 1036, so ...
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3 answers
456 views

Difference between N3K and N5K

I have 4-5m PPS and ~12Gb bps and around 650 interface vlan and each vlan has 3-4x prefix such as /29 or /28 and i have 6-7 bgp session with no full table and around 2000 IP routes with around 3000 ...
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6 votes
1 answer
1k views

NX-OS 9.3: ECMP polarization and "ip load-sharing ... rotate"

This is a "why and how exactly does this work" question. The given problem is already solved. QUESTION: I'm interested to understand what "rotate" in ip load-sharing address source-...
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3 votes
1 answer
249 views

The equivalent of "ip dhcp snooping information option allow-untrusted" on NX-OS

I'm adding DHCP Snooping to the core switches but I'm unable to find the equivalent of ip dhcp snooping information option allow-untrusted from Cisco IOS in Cisco NX-OS. I've done some tests without ...
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1 vote
2 answers
722 views

Cisco Nexus 6k mac move detection not working

My device is cisco Nexus 6001 Chassis (one unit dc switch) # show version ... kickstart: version 7.2(1)N1(1) system: version 7.2(1)N1(1) ... I've configured mac move detection: # conf t # mac ...
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  • 113
3 votes
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Are there any of NX-OS switchport "meta tags" alike features?

I believe I once stumbled across an NX-OS feature which we currently need, but for the sake of it, I can't remember the details like platform (100V, 5000, 7000) or version. We are currently using 5600'...
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Cisco Nexus 9K route-map match interface regular expressions

I'm using a 9504 running 7.0(3)I7(3). I'm trying to configure a route-map that matches all of my VLAN interfaces: route-map RedistribInterfaces permit 10 myrouter(config-route-map)# match interface ...
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4 votes
1 answer
2k views

Cisco 3172 asks for LAN_ENTERPRISE_SERVICES_PKG license to enable OSPF and PIM when they are LAN_BASE_SERVICES_PKG license features

I have several Nexus 3100 switches in which I use OSPF and PIM. Cisco says that these features are included in the LAN_BASE_SERVICES_PKG which is included by default in the switches. Switch1# sh ...
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4 votes
3 answers
1k views

Blacklist CLI commands on a Nexus

Is there a way to make a Cisco Nexus 7k to reject a CLI command? Everyone knows about the impact, when you want to add a VLAN to a trunk, and if you forget the keyword aadd. If you do this with a ...
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1 vote
1 answer
2k views

VLAN does not exist in NXOS

This is my first time posting so my apologies if it's not quite right. I created a VLAN in NXOS with the following configuration: interface Vlan100 no ip redirects ip address 172.50.39.2/24 ...
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2 votes
1 answer
3k views

DHCP not working on clients connected to Nexus 3048 but works on SVI

I've a strange problem with a pair of Nexus 3048 Switches in a vPC configuration. Since the core are still under implementation we've hit an strange issue: clients can't get IP addresses from the ...
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1 vote
1 answer
1k views

Cannot enable Flow Control on Cisco Nexus 3048

I've a pair of Nexus 3048 running NXOS version 7.0(3)I2(2d) and I can't enable flow control on ethernet interfaces. When issuing the command: flowcontrol receive on it returns with: ERROR: This ...
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1 vote
2 answers
1k views

How long of an outage for ISSU Nexus Upgrade?

I am in the progress of doing ISSU upgrades on some nexus 7710 chassis' with dual supervisor modules. I set a ping test that to traverse across the switch shortly before the upgrade and experienced ...
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3 votes
1 answer
220 views

DCNM Lincense Allocation

I recently installed Cisco DCNM (Data Center Network Manager) and my trial license has expired but I would like to continue to use the free Essentials license for my 5K switches. Can anyone advise ...
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