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 7000 And 2000 Extenders Connection

Nov 2, 2011

currently nexus 2000 and nexus 7000 does not support dual connection. you can not connect to 1 nexus 2000 to 2 nexus 7000 chasis. But for the nexus 5000, Nexus 7000s? 5000s and 7000s run same software. 

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Cisco Switching/Routing :: Nexus 7000 And 2000 FEX Support With VPC

Apr 20, 2012

if vPC is supported between a single 2232PP FEX and two 7000 switches running 6.0(1)? I have been researching this for an implementation I am doing for a client and was able to determine it was not supported with earlier versions of 5.0 when the FEX is connected via vPC as I described above, but I can't find anything related to version 6.0(1). I have done this for other clients with 5000 and 2000 switches, but I don't have too much experience with 7000 switches.

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Cisco Switching/Routing :: Nexus 2000 To 7000 Connection

Jan 13, 2013

If the latest release of NX-OS 6.1.2 supports dual homing a Nexus 2000 to a pair of Nexus 7000s (F2 Module)? The document does state something about support for vPC+ but is not really clear about it.

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Cisco Switching/Routing :: LACP Support On Nexus 2000 With 7000 As Parent Switch

Jun 13, 2011

Does the LACP will be supported on Nexus 2000 host interfaces when parent switch is Nexus 7000?

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Cisco Switching/Routing :: Nexus 55548UP - 1GE SFP Module Not Recognized In Fabric Extender

Oct 17, 2012

we installed copper and fiber sfp modules in the 2232PP and none would link up. we pulled the sfp modules out and entered the speed 1000 command and re-inserted the module with no success. the same sfp modules works fine in every other cisco device. we must be missing something. running latest nx-os software.
 
COH-Nexus-02# sh int Eth101/1/1 status
--------------------------------------------------------------------------------
Port          Name               Status    Vlan      Duplex  Speed   Type
--------------------------------------------------------------------------------

[Code].....

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Cisco Switching/Routing :: Nexus 5548UP With 2232TM Fabric Extender And Server Teaming

Oct 11, 2012

Need clarification on the VPC with 5k and 2248 Fabric Extenders. My question  is can each fabric extender uplink to two different 5ks, and  at the same time, have servers connected to two both fabric extenders with a VPC.So basically, the server NIC will team with two different fabric extenders, and each fabric extender will connect to two different 5k's.

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Cisco Switching/Routing :: Nexus 2232 Feature - Connect To Switch Like HP Flex Fabric

Aug 22, 2012

As per my understanding, Cisco Nexus 2232 can only connect to HP c7000 Chassis if we are using a Pass Through Switch in the HP c7000. Cisco Nexus 2232 can only connect to End Hosts and not to a switch. Is there a New Feature added in Nexus 2232, which enables it to connect to a Switch like HP Flex Fabric ?

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Cisco Switching/Routing :: How To Properly Power Down Nexus 5000 And Fabric Interconnect Switches

May 7, 2013

How to properly power down the Nexus 5000 and the fabric interconnect switches? I have looked up and down cisco's and google web for steps, but they are all coming back with the answer to just disconnect the power cables after you have power down all the windows os and exs servers. Before i do that, I just wanted to make sure that that's the correct way to do it or if there are actual commands that I will need to run on the devices to properly power down. I know that the FI do have a command to reboot, but i need them to completely be power down.

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Cisco Switching/Routing :: Nexus 2000 FEX And LAN Switch Connection?

Jan 7, 2013

I have a big doubt. Can I connect a LAN switch (i.e. 2960, 3560 or 3750) to a couple of Nexus 2000 FEX (i.e 2232P or 2248TP) and have a Port-Channel or vPC with STP active and several VLANs through this Port-Channel? Or Can I only connect servers to these N2K FEX?

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Cisco Switching/Routing :: Vpc Orphan-port Suspend On Nexus 2000

Apr 23, 2013

nyone know if "vpc-orphan-port suspend" works if i put on N2k interface. not the fex link. example i have fex 101 and i put on eth 101/1/10 will it suspend the port on N2K connected to secondary N5K when peer link is down?

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Cisco Switching/Routing :: Connect Nexus 2000 To Two 5000 With Different Links?

Feb 12, 2013

is it possible to connect one Cisco Nexus 2000 fabric extender to two Cisco Nexus 5000 and use one link on the first side and two links on the other side?

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Cisco Switching/Routing :: What S The Fabric Speed (backplane Speed) Of A Nexus 2232 10G EX

Jan 12, 2013

What s the fabric speed (backplane speed) of a Nexus 2232 10G EX?What is the forwarding rate (Mpps) of the same 2232 FEX? 

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Cisco Switching/Routing :: Nexus 7000 Vrf Not Enabled?

Dec 9, 2012

Should I install any special license to enable vrf within Nexus 7000 VDC? I observed that vrf routing instance is not enabled in the VDC.

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Cisco Switching/Routing :: NTP Authentication On Nexus 7000?

Mar 3, 2013

I am configuring NTP on a new Cisco Nexus 7000 running version 6.1(2). NTP is working properly between the access switches and Nexus, however when configuring Authentication, NTP is not working anymore.
 
confguration:
 
Nexus 7K server
============= 
ntp server x.x.x.x
ntp peer q.q.q.q
ntp server e.e.e.e
ntp server r.r.r.r
ntp source-interface  Vlanx

[code]...
 
why NTP authentication is not working !!!!! on Nexus 7000

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Cisco Switching/Routing :: FIB Inconsistency On Nexus 7000

Aug 3, 2011

On a 7K (5.0(2)), I have a situation where the FIB and RIB are out of sync.  I'm not sure it's causing a problem, but it's been implicated in some weird packet loss issues.  It seems like it could cause network issues if you had two routes in the RIB, only one in the FIB, and then you lost the single path in the FIB. How the RIB/FIB gets out of sequence, how to proactively know about it (nothing in the logs here), and whether or not this is a big deal or a red herring?
 
Here's sample output that illustrates the RIB and FIB being out of sequence.
 
ROUTER1# show ip route 172.16.100.1
IP Route Table for VRF "default"
'*' denotes best ucast next-hop

[Code].....

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Cisco Switching/Routing :: Support For FeX 2232TM In Nexus 7000?

Feb 2, 2012

We recently purchased a pair of 2232TM Fabric eXtenders just to find out that our Nexus 7000 does not support it. Will there be support for the 2232TM FeX in Nexus 7000 any time soon?

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Cisco Switching/Routing :: Nexus 7000 OTV With F1 Line Cards?

Jul 17, 2012

I have two data centres connected via a L2 DWDM, my manager wants to look into using OTV to get rid of the layer 2 broadcasting issues.
 
Problem is the DWDM is 1000BaseSX, which is only supported on the N7K-F132XP-15.   (and the N7K-M148GS-11 but that doesn't support FCOE, so many bloody caveats). From what I can gather OTV is not supported on the N7K-F132XP-15.
  
Is it possible to terminate the DWDM on the F1 card & loop another port from the F1 to a port on the N7K-M148GT-11 & run OTV on the M1????
  
Either using VDCs or just an isolated VLAN on the F1. Is there any better way to do this? Hardware has not yet been purchased.

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Cisco Switching/Routing :: Nexus 7000 Vdc Vlan Configuration?

Dec 9, 2012

I am seeing an issue that after deleting/recreating one of the VDC in Nexus 7K, VLAN is not been able to be configured within the VDC although it is not actually a reserved VLAN. Could it be anything missing in the license installation? the version of the image is NX-OS 6.1.2
  
StorageVDC(config)# vlan 100
^
invalid vlans (reserved values) at '^' marker.

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Cisco Switching/Routing :: Nexus 7000 Keep Alive Link For Vpc?

May 5, 2013

We setup two n7K as core switches in our network. We configure VPc peer link as well successfully. We are using mgmt interface of supervisors as a peer keep alive interface, so what happen when this keep alive gets down? Are we loss Vpc peer link between both nexus 7 K?

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Cisco Switching/Routing :: Nexus 7000 QoS Marking For Both DSCP And COS

Jan 29, 2012

I have a pair of Nexus 7K's running 5.1(3). I have a handful of edge devices that I need to mark ingress traffic, and need to mark both DSCP and CoS. Right now, I have a working config that marks DSCP appropriately.While that works dor DSCP, the MQC will not allow me to mark both DSCP and COS in the same class, and unlike IOS, it appears that Nexus does not have a default DSCP-to-COS mapping. My understanding is this can be solved using table maps, but I don't see how that can solve my problem in this specific scenario (it appears I can do marking or table-map mutation, but not both?). How I can accomplish both?

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Cisco Switching/Routing :: Nexus 7000 Cannot Get AAA Authentication To Work

Dec 5, 2011

I cannot get the AAA tacacs+ authentication to work on my Nexus 7000.

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Cisco Switching/Routing :: Nexus 7000 To Know Ambient Temperature

Nov 2, 2012

I need to know how is the ambient temperature for the Nexus 7000 switches to plan a new datacenter. In the datasheet I found the following information regarding this topic:"GR-63-CORE Network Equipment Building Standards (NEBS) specification published by Telcordia Technologies in Section 4.1.2". How are the specification for temperature in this standard?

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Cisco Switching/Routing :: QOS For VOIP Traffic On Nexus 7000

Mar 4, 2012

regarding QOS on Nexus 7000. Our Nexus 7000's form a collapsed distribution/core layer, our access layer switches are are a mixture of Cisco 3750 & Cisco 4507. 3750 switches will connect to Nexus switches via 1Gb uplink, 4507 switches will connect via 10Gb uplinks. Each Nexus will be connected via 20Gb port channel, all servers connect to the Nexus switches via 1Gb links. We're implementing a new telephone system soon which will be using VOIP so I need to configure the switches to perform QOS. The IP phones will mark the RTP traffic with DSCP value EF and call signaling traffic CS3. I'm fine configuring qos on the access layer switches, its just the Nexus switches which I'm not sure about.
 
Do I actually need to configure any QOS parameters on the Nexus switches so they will prioritise the VOIP traffic. If my understanding  the Nexus switches will trust the DSCP values and assign the traffic to the relevent queues?
 
Just for information VOIP is the only traffic I will be marking QOS values

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Cisco Switching/Routing :: Nexus 7000 Bandwidth Control

Oct 14, 2012

On Nexus 7000s I want to limit bandwidth of particular IP. I can do this using proper configuratio of IP ACL, policy map and class map. But what if I dont have information on interface?  Can I apply bandwidth control for particular IP without knowing the interface?

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Cisco Switching/Routing :: Nexus 7000 Log Entry Explanation?

Dec 4, 2011

I have some error messages in the Nexus 7000 log, after searching i cannot find an adequate explanation, pretty much the only thing i can find is below and i don’t think it is very relevant to my situation. The device is in production and so reloading and pulling card willy nilly is the last resort.

Device = Nexus 7018
IOS version = 5.1(2)
Log messages=
2011 Dec  2 14:52:35 IAS01LVSWIPC01 %OC_USD-SLOT8-2-RF_CRC: OC2 received packets with CRC error from MOD 6 through XBAR slot 1/inst 1 and slot 2/inst 1 and slot 3/inst 1

[code]....

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Cisco Switching/Routing :: Nexus 7000 / Configuring Jumbo MTU?

Nov 17, 2011

I have a Nexus 7000 plus 6 boxes NX2000 on backbone.I have configured on 7000 :
 
conf t
system jumbomtu 9000
exitERROR: Ethernet111/1/1: requested config change not allowed
...
ERROR: Ethernet122/1/48: requested config change not allowed
1/111/14 is a NX2000 port conf tinterface ethernet 1/111/14 switchport mtu 9000 exit

I have gotten this message : Error: MTU cannot be configured on satellite port(s) - Eth122/1/11 ?I have tried on a NX7000 TP port:ERROR: Ethernet10/45: MTU on L2 interfaces can only be set to default or system-jumboMTU ?Does JUMBOMTU configuration can be done only when there are no NX2000 configured ?

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Cisco Switching/Routing :: Nexus 7000 Span Limitation

Apr 18, 2012

I've learned recently that the Nexus 7000 only allows the configuration of a maximum of 2 Monitor sessions for spanning traffic. I only have one monitor session left and I need to do the following. 2 Core Nexus 7000 boxes with 2 different traffic probes/sniffers to each nexus( eg Sniffer 1 connects to Switch A on interface eth 1 and to Switch B on eth 1 ; Sniffer 2 connects to Switch A on eth 2 and to Switch B on eth 2.) My plan was to setup a standard session with multiple sources and destinations then on the interfaces connecting to the sniffers run a trunk and do 'sw trunk allowed xxxxx' and filter what I need to go to each sniffer box. However I've recently found out that some of my source traffic is coming from Port-Channel interfaces. Is there a way I can get around this and still do the filtering within only 1 monitor session ?

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Cisco Switching/Routing :: How To Configure IP Helper In Nexus 7000

Jan 30, 2011

I'm interested to know whether we can configure ip helper in nexus 7000?

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Cisco Switching/Routing :: Nexus 5500 / 7000 - Dependencies On VTP

Jun 26, 2012

Are there any dependencies on VTP on the Nexus platforms like the 5500 or 7000? In IOS P V LAN required VTP Transparent mode however I cannot find any reference to this for the Nexus platform. Are there any other features that would require the use of VTP? By default VTP is turned off on nexus and has to be enabled with the feature command so is there any benefit to running VTP in transparent mode vs off?

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Cisco Switching/Routing :: Dedicated Mode On Nexus 7000?

Feb 22, 2012

i like to configure two ports in dedicated mode (eth4/1 + eth4/2).the ports are on a modultype "N7K-F132XP-15" (32x10GE)all ports are in one vdc membership (default configuration)
 
ive tried this for port eth 4/1:
bciscon7k01(config)# int eth 4/1,eth 4/3,eth 4/5,eth 4/7
bciscon7k01(config-if-range)# shut
bciscon7k01(config-if-range)# int eth 4/1
bciscon7k01(config-if)# rate-mode dedicated
 
after that i get the following message:"Ignoring command for interface Ethernet4/1 as rate-mode is fixed." i didn't find any documentation to this error message.whats wrong in my configuration?

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Cisco Switching/Routing :: Nexus 7000 Errors Every 30 Seconds

Feb 3, 2013

I have a Nexus 7000 pair with Etherchannels connecting to various access switches. 2960's and 3750's.The access switches channel 2 ports together. LACP active mode. One link goes to one Nexus and one to the other. Those connections are a portchannel with vpc configured.Every 30 seconds on every interface connecting to one Nexus I see a FCS error. The errors increment at the same time every 30 seconds. Only on one port. If I shutdown that link and keep the channel up on the other link the errors move. No shut the interface and they move back.This must surely be some Nexus generated packet that the access switch does not recognize/ what is likely to be getting sent at 30 sec intervals to all Channel members on one link ?

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Cisco Switching/Routing :: SFP Showing Unknown On Nexus 7000

Mar 9, 2013

I have couple of SFP and most of them are working fine except this:-
 
Nexus7000# show interface ethernet 6/31 transceiver details

[code]...
 
a) What is the reason this is not getting recognized?
 
b) Is theSFP SFBR-5766PZ-CS1 plug and play in the 7000 Nexus?

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