Cisco Switching/Routing :: Setting Up NTP On New Nexus 3064s

Mar 11, 2012

I'm having a little trouble setting up NTP on our new Nexus 3064s. We are using a local Meinberg M300 as our server and the Nexus 3064 as a client. Before I submitted a TAC I was wondering if the community would mind double checking what I have. One major issue I've come across is that the Nexus 3064 will only take a 8 character NTP passphrase. We normally use a 32 char MD5 string. I setup a new 8 char passphrase on our Meinberg M300. I am not using fabric extenders or distribution to other Nexuses. I am using an interface vlan as our management interface per our current network setup. I am using a VRF. We use some public IPs so all IPs are xxx'ed out. [code]

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Cisco Switching/Routing :: Setting Up Nexus 5000(s) For Inband Management?

Feb 12, 2012

we do not have an out-of-band management network and setting one up at this point is not being planned.  We are mainly a swtiched environment and the only devices that are using L3 are the core switch for WAN purposes and the lab because it is mimicking the production environment.  I have two Nexus switches that are sitting on the other side of a 3750 switch which is currently acting as a L3 device because this is a pre-production environment for a new project.  We had an issue with management of the devices before but our workaround was to put them on the management vlan direcltly off of the core, allowing only management traffic to pass by means of mgmt0 on each device.  The problem I'm having now is that I've now setup the mgmt0 interfaces on both for the keepalive link for vpc only (vpc traffic is going accross 2x10gb connections and the link to the 3750 is 1gb each trunked) and have lost my ability to use the mgmt0 connections for management. How to connect my management connection through either the 3750 or directly off the core switch (as that's what will happen once it's put into production)

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Cisco Switching/Routing :: Packet Discard On Nexus 5020 Link To Nexus 5K

Feb 23, 2011

We are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]

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Cisco Switching/Routing :: Nexus 7000 With Fabric Extenders Nexus 2000?

Mar 15, 2013

I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
 
Can i just link the Nexus 7000 like the following?
 
N7k-A    =========   N7k-B
|                                   |           
lots of N2ks               lots of N2ks

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Cisco Switching/Routing :: Nexus FEX Transceivers SNMP MIB Nexus 5000

Dec 22, 2011

Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.

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Cisco Switching/Routing :: Datacenter Design With 2 Nexus 5K And 4 Nexus 2K?

Nov 13, 2012

we are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.

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Cisco Switching/Routing :: Nexus 7010 / VSS - Does It Support Virtual Switching?

Apr 9, 2010

Does the nexus 7010 support virtual switching yet?  All of the posts I have found from about a year ago say that it is going to be supported, but there were no dates listed.  I heard the same thing from Cisco a while back, but haven't followed up with it.If it is supported finally are there any configuration guides available for it?

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Cisco Switching/Routing :: Facebook Forum Data Center Switching With Nexus 5000

Oct 8, 2012

Lucien is a customer support engineer at the Cisco Technical Assistance Center. He currently works in the data center switching team supporting customers on the Cisco Nexus 5000 and 2000. He was previously a technical leader within the network management team. Lucien holds a bachelor's degree in general engineering and a master's degree in  computer science from Ecole des Mines d'Ales. He also holds the  following certifications: CCIE #19945 in Routing and Switching, CCDP, DCNIS, and VCP #66183

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Cisco Switching/Routing :: Nexus 5010 Support For Inter VLan Routing

Jan 10, 2012

Can nexus 5010 supports inter v lan routing , as there is no core switch and router available in current network.

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Cisco Switching/Routing :: Nexus 5000 LAN Routing Connection Deployment

May 16, 2013

We have our Nexus as our default gateway (101.1) and the default VLAN1 is setup with two subnets 101.X and 102.X. The DHCP server is using a superscope setup to accomodate the overflow of devices requesting IPs on 101, so when 101 is consumed persons are able to obtain a 102.X IP address. The setup is basic on superscope. The issue is some times the routing to the firewall with a 102.X is not always 100%. Somedays all goes well and the 102 subnet is routed out to the firewall and its a good day. However, such as today a 102.X address is not routing as it did 24 hours ago. I am perplexed as to why this is behaving unpredicatable. Here is running-config for VLAN1 to show the 102 as secondary address to VLAN1.

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Cisco Switching/Routing :: Nexus 7010 - Inter-VLAN Routing On Multilayer VPC Environment

Feb 16, 2011

you find attached my network architecture with 2 Nexus 7010 on core layer and 2 Nexus 5020 on distribution layer, each one with 1 N2148T fabric extender switch. PC-A1 and PC-A2 are connected to one N2148T, PC-B1 is connected to the other N2148T. Nexus-7000-1 is HSRP Active for all VLANs, Nexus-7000-2 is HSRP standby. PC-A1 and PC-A2 are connected to VLAN A, PC-B1 is connected to VLAN B. PC-A1 and PC-A2 have the same default gateway correspondent to IP HSRP on VLAN A. It happens that PC-A1 is able to ping PC-B1 while PC-A2 is unable to ping PC-B1. If I issue a traceroute from PC-A2 I see Nexus-7000-2’s physical IP address as the first hop even if Nexus-7000-2 is HSRP standby. After the first hop the traceroute is lost. If I shutdown Port-channel 20 on Nexus-5000-2, PC-A2 starts to ping PC-B1.I can’t understand what’s wrong in this architecture.

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Cisco Switching/Routing :: Nexus 7010 / 5510 - Run OSPF As Layer 3 Routing Protocol Between VPC Peer Links

Mar 25, 2012

I have an environment where i have two nexus 7010 switches, along with 2 nexus 5510's. I need to run OSPF as a layer 3 routing protocol between the vpc peer links.  I have 1 link being used as a keep alive link, and 3 other links being used as a VpC link.
 
1) Is it best to configure a separate Vpc VLAN i.e 1010

2) Is it best to configure a vrf context keep-alive

3) just have the management address as the peer ip's.

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Cisco :: Setting Up Netflow On Nexus 7K

May 22, 2013

I was trying to get Netflow setup on one of my 7K VDCs and ran into a problem.  While netflow data was reaching the collector, IP src/dst information was not appearing in the analyzer tool.  I could not see any information about conversations.  So I contacted the company that makes the collector/analyzer and the directed me to a blog on their site and told me to setup the 7K exactly as it is described in the blog post.  I did and a bit later the ip src/dst address information appeared.  So the only difference between the two configurations was that in the first case I tried to define a record and in the second case, no record was defined and instead the orginial-netflow parameter was used in the "flow monitor" section. [code]
 
I referenced the document "Cisco Nexus 7000 Series NX-OS System Management Configuration Guide,Release 6.x", Chapter 19 - Configuring NetFlow.It's clear to me that I didn't do something right in defining my own record since that's really the only difference between the config that worked vs the config that didn't.  However, the documentation I referenced doesn't really provide useful information about how to create a record (above and beyond what I can already see by typing '?' at the CLI). 

For example, the "match" command makes no sense to me.  Usually when you have a match command it is accompanied by some sort of ACL.  In the "flow record" section a match command would be something like "match ipv4 source address" but that's it.  What does that mean?  Match anything that has a IPv4 source address??  That doesn't make much sense.  The collect commands are equally as bewildering.  If I want to define my own record (and not use the original-netflow parameter) what do I need to do in the "flow record" sub-configuration to get Nexus to send ip src/dst information to the collector (which, I would think, is basic information to send - what good is netflow data without it)?

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Cisco Switching/Routing :: Nexus 5548P Routing

Feb 6, 2012

I have a pair of 5548P switches with the L3 daughter cards installed.  Using the base license as I just need RIP routing.  I have the two switches setup and have the RIP routing feature enabled.  When I "turn on" routing using RIP I do not get any routes from my existing L3 switch (3750).  I probably don't have routing setup correctly.  With the 3750 IOS, I just turned on RIP with the router rip command and added a couple of network statements.  On the nexus I have run router rip {instance} and left it at that.  I am not getting any routes from my 3750.  The 5548s are using the management ports and are connected to my existing network with L2 trunks.  Does any know of a setup guide for RIP?  I have used the Nexus 7000 RIP guide but still can't get it to work.

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Cisco Switching/Routing :: RIPv2 Routers Setting Routing Table For R3

Dec 5, 2012

I started using RIPv2 on Packet Tracer. I got two subnets to connect with two routers. After I completed that, I decided to add a third router. How to setup the Routing Table for atleast R3 ?

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Cisco Switching/Routing :: CAT 4006 VLan Routing Without Setting Interface IP?

Feb 26, 2013

We got a layer3 switched network, with one vlan for every switch, routed by a cat4006. [code] So can we put some ports on different switches in, let`s say vlan 50, with different ips? For example, Port 0/3 on Switch 1 and 0/8 on Switch 2, but keeping the ip of the "old" vlan? Or is it necessary to configure a specified vlan interface with ip-adress for every vlan if i want to route it?

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Cisco WAN :: Setting Up Nexus 5000 Series Switch?

Apr 23, 2013

Am new to Nexus switching, i have a  Nexus box that i need to link with IBM servers with 10GB Network Cards.
 
how to set up fiber channel on this machine

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Cisco Switching/Routing :: 10G Ports On Nexus 7K?

Jul 2, 2012

I''ve trying to bring up ports on a N7K-M108X2-12L card using X2-10GB-SR modules.
 
All ports are in a VDC and configured to accept the M1 card:
 
vdc_id  vdc_name                          state               mac                 type        lc
------  --------                          -----               ----------          ---------   ------
2       cam-cor-csw-sfy-01                active              64:a0:e7:43:f0:c2   Ethernet    m1 f1 m1xl

[Code]....

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Cisco Switching/Routing :: 7010 - How To Add Two Nexus 5K In DC

Feb 18, 2013

This is regarding Nexus core switch 7010. We are already running two nexus 7K with ten Nexus 5k. Currently we are going to add two new Nexus 5k in our DC. In the 7K we already running two VDC's.

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Cisco Switching/Routing :: Nexus 5k High Fan RPM

Jun 8, 2013

The fans 1 & 2 in Module 1 on the Nexus5K are still experiencing the very high RPM and speed issue.
 
I have replaced the fan from another operational Nexus5K, and the fans are fine in the other Nexus. The replacement fans also have the same issues, so it is not a fan hardware issue.
 
There are no threshold alarms. the only log entry that is related to this is as follows:
 
%NOHMS-2-NOHMS_ENV_ERR_FAN_SPEED: System minor alarm in fan tray 1: fan speed is out of range on fan 1. 7950 to 12500 rpm expected. I have provided the output for both the fan detail and the temperature.
 
N5K-01# sh environment fan detail
Fan: --------------------------------------------------- Module  Fan  Airflow        Speed(%)  Speed(RPM)              Direction --------------------------------------------------- 1       1   

[Code].....

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Cisco Switching/Routing :: Per-VLAN QoS On Nexus 5K?

Feb 22, 2012

I was reading a QoS walkthrough earlier to try to solve my problem and I noticed that in IOS, you can specify "match vlan" in a class map.  This is not available in NX-OS. I'm not doing any routing on the 5K so I cannot match on ACL, and port where traffic is received is a trunk sharing other types of traffic I'd like to classify elsewise.
 
How can I match traffic on a per-VLAN basis?

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Cisco Switching/Routing :: How To Configure Nexus 5K

Oct 26, 2011

How to configure a nexus 5K?

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Cisco Switching/Routing :: Nexus 7k - Fex Not Loading

Mar 14, 2013

Just upgraded Nexus 7k from 5.2.1 to 5.2.7 (just system and kickstart image and NOT epld image). but after upgrading the one of the fex(n2k) dont seem to come online (this nexus 7k has two n2k and one of them came online and working fine)                  
 
[code]....

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Cisco Switching/Routing :: QOS By VLAN On Nexus 5k?

Aug 14, 2012

I have a couple of Nexus 5ks that I want to put QOS on for the servers running behind it but also have voice running across it.  Voice doesn't play well with jumbo frames so I'd like to put QOS only on the voice vlan. 

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Cisco Switching/Routing :: Vlan On Nexus 7K Is Down

Apr 17, 2013

I am working in my lab and I was adding a new L2/3 vlan

vlan 555
name test
 
int vlan 555
ip address 1.1.1.1/24
no shut
 
I have also ensured that this vlan is added to the port channel going to my Nexus5K's.  I added the vlan to the 5K's and also ensured that vlan 555 is traversing the peer link.  all is good there.  I have also placed a device on a interface on the 2k as a access switchport on vlan 555
 
Here is my problem, the L3 interface will NOT come up on the 7K
 
LAB-DSW01# sh ip int brie
IP Interface Status for VRF "default"(1)
Interface            IP Address      Interface Status
Vlan555             1.1.1.1     protocol-down/link-down/admin-up  
 
I have gone throug just about everything I can think of and I am still unable to get this L3 interface to come up.  I have other L3 interfaces on this device that are configured exactly the sameway without any issue at all.  All the existing interfaces are working properly, it's jut this new interface that I am trying to add.
 
I am running version 6.0.1 on the 7K and 5.2.1.N1.4 on the 5K.

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Cisco Switching/Routing :: FCoE Support On Nexus 7k

Feb 24, 2013

Its required that all ports on nexus 7k should be user configurable as either 1G/10G/FcoE. Which module do i need in this case ?

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Cisco Switching/Routing :: Would Nexus 5K Can Have 2 Separate Connections To Each VDC

Jan 23, 2012

We are thinking of following classic design, would Nexus 5K can have 2 seperate connections to each VDC? Nexus 7K w/ different VDC (Internal / DMZ ) Can Nexus 5K have a VPC connection to Nexus 7K to Internal VDC as well as DMZ VDC, and seperate traffic?

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Cisco Switching/Routing :: Nexus 5010 With 1G And 10G Uplinks In VPC?

Aug 12, 2012

I currenty have a Nexus 5010 connected to a core 3750X switch stack  in a VPC trunk using 2  1Gbps links.  I want to move this link to 2  10Gbps links without losing connectivity.  So I want remove a 1G link  and move it to 10G and then once that's up move the other 1G link to 10G  hopefully without losing connectivity.  So the question is, can I have a  1G and 10G link between the Nexus and 3750s in the same virtual port  channel without causing problems?

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Cisco Switching/Routing :: Nexus 7K Downgrade Failure

Feb 2, 2012

After trying to downgrade a Nexus 7K from 5.2.1 to  5.1.5 by updating the boot & kickstart boot statements and reloading, I'm now stuck in an endless cycle of reloading. See below:

Is there a break sequence which will allow me to modify the boot statement back to the original via ROMMON or something similar?

[code]....

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Cisco Switching/Routing :: Configure Sub Interface For Nexus 7k?

Jan 11, 2013

how do we configure sub interface for nexus 7k?do we have to issue ma-address command under physical interface and than configure subinterface? if yes than what do we have to type the mac address for "mac-address" command?I can doing and than configure subinterface but the interface/subinterface didn't come up. do we have to bounce it couple times to bringe it up?

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Cisco Switching/Routing :: Connecting Nexus 7010 VDC With VPC

Jan 29, 2013

In our LAN network design, we have two Nexus 7010 switches on the core connected via vPC. Then LAN access switches are directly connected to the Core Nexus switches  via  regular port channels on the 3750's  and vPC on Nexus. The core Nexus switches will be linked to an existing LAN network and the applications will be progressively migrated from the old to the new network.In this scenario, three VDCs are planned to be configured on the Nexus -  One for the Interconnect (and WAN at a later stage), one for the LAN/local services and one for the building facilities/local services.

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Cisco Switching/Routing :: Setup IP On Nexus 5500?

Apr 19, 2013

How to you setup ip routing on a Nexus 5500 I want to do vlan routing between an Nexus 5500 and Catalyst 3750. Nothing clever just have the 2 switches talk and vlans route between the two.

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Cisco Switching/Routing :: Default Routes In Nexus 5k

Apr 29, 2013

I have a pair of N5K's, down stream from them are from Fabric Interconnects and a UCS chassis.  Upstream is a stack of 3750's then ASA5510's. 
 
I am trying to backup the config to our TFTP server and I am getting 'no route to host'.. I tried to add a route, and found that N5K uses VRF's for routing?? .. After some looking I see there are two base VRF's 'management' and 'default'.. the management VRF has a default gateway entry and a single interface member (mgmt0).. when I look at the default VRF .. there are no interface members or routing entries.. Ok, I can handle that just add some interfaces and add a default gateway.  Then I get lost:
 
I'm able to access the UCS manager..... so how the heck is that even possible if there's no gateway defined anywhere (or maybe I'm missing something?).  My theory was: add all other ports but mgmt0 to the default VRF, and have the default gateway point out of the uplinks (a vPC).. but wasn't sure how that would affect anything and mainly just wanted to know how I was able to access the UCS manager in light of the fact that there is no default gateway anywhere that I could see...

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