Cisco Switching/Routing :: Reason For L3 Not Ready In Nexus 5596

Dec 19, 2012

we have configured VpC between two Nexus 5596, for Vpc-Keep-alive-link we configured L3 interface with 1G (GLC-T) ,it shows the below status message "L3 not Ready" with interface LED glows in Yellow in color. is this a physical layer problem  
 
Ethernet      VLAN     Type Mode         Status                    Reason                     Speed            Po Ch
Eth1/17       --              eth               routed down           L3 not ready               1000(D)            --
Eth1/18       1              eth                access down          SFP not inserted            10G(D)             --
Eth1/19       1              eth                access down          SFP not inserted            10G(D)             --
Eth1/20       1              eth                access down          SFP not inserted            10G(D)              --
Eth1/21       1              eth                access down          SFP not inserted            10G(D)              --  

[code].....

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Cisco Switching/Routing :: Nexus 5596 UP L3 OSPF

Jan 3, 2013

I have 2 Nexus 5596UPs with a layer 3 cards that are exhibiting some very peculiar behavior.  The systems are running 5.1(3)N1(1).I have configured 2 VRF contexts each running their own OSPF process.  There is a static gateway of last resort configured on each VRF, which is to an upstream pair of 5585X's in Active/Active.  Each OSPF process has the "default-information originate always" command configured, however, backbone neighbors are not recieving a gateway of last resort from the 5596UPs.  The applicable configurations are show below.  All other routing information is passing correctly between devices in the network.  This network is not production, it is a proof of concept for a larger implementation.

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Cisco Switching/Routing :: Netflow On Nexus 5596

Oct 23, 2011

Net flow on the Nexus 5596upI can't seem to find any information on the Nexus 5596 support of net flow. On  Nexus 5596UP support of  net flow ? 

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Cisco Switching/Routing :: Nexus 5596 - VPC Keep Alive Over Non-VPC Trunk

Mar 19, 2012

We have setup a pair of Nexus 5596 L3 switches with 2 x 10Gbps LACP links between them to act as the vpc peer link. We also have another 2 x 10Gbps LACP links between the 5596 switches to carry non VPC VLANs, this is required to provide EIGRP routing between the switches and an upstream router.I have read that it is possible to setup the vpc keep-alive link over an SVI instead of the management interfaces. Is it ok to run the keep-alive SVI over the second LACP non VPC VLAN trunk or is it recommened to keep this seperate?

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Cisco Switching/Routing :: Nexus 5596 N55-M160L3-V2 Module

Oct 31, 2012

Can Nexus 5596 support more than 1 N55-M160L3-V2 layer 3 module?

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Cisco Switching/Routing :: Nexus 5596 / 2248 TP - Compatibility With SFP-10G-SR

Jan 31, 2012

I am looking to see if Nexus 5596UP & Nexus 2248TP GE compatible with SFP-10G-SR? The reason is because a consultant was hired on to "design" the network layout and has decided to purchase Cisco SFP+ Copper Twinax Cables which have a 10M limit. A small handful of the Data Center racks are 10-15M away... just out of reach of the Twinax. I would prefer NOT to move the LAN row so that it is more centered in the room. Can I use the SFP-10G-SR to connect the 2 switches (5596 & 2248) together? This SFP has a 26M reach on standard 10gig fiber, the small cost increase per connection is of no concern.

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Cisco Switching/Routing :: 5596 Nexus In-band Management With SVI

Apr 16, 2013

i have: two nexus 5596 connected each other the mgmt0 is NOT in use SVI for keepalives with IP address and /30 netmask vpc-keepalives running over fiber in e1/1. this works well uplinks to datacenter distribution switch (Cat 6500 VSS) over fiber on port-channel 1 (e1/2 and e1/10), also carrying the management VLAN (vlan 14). SVI with an IP address for management purposes
 
I can't get this to work. i can ping my whole network from the nexus, but not the nexus from my network. also pinging inside the mgmt vlan is not possible.

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Cisco Switching/Routing :: ERSPAN On Nexus 5596 HSRP Pair

Jul 6, 2012

We have HSRP between NexusA and NexusB with access layer switches connecting to the core using VPC, We are trying to setup a VAM  server Voice recording for Siemens phones. We need to span all voice vlan and point it to the VAM server the VAM server connects to a 3750 Stack considering the amount of traffic multiple span session can generate I plan to move the server to the Nexus directly and run a Local Span Session.

1- As we have two Nexus running HSRP and VAM server only connects physically to one NexusA (I can run local span on that nexusA)  the Second NexusB is not directly connected to the VAM server I plan to run ERSPAN so if this is the best design and which path will the span traffic take from Nexus B to NexusA will it go through the access layer switches depending on the vlans allowed on the uplinks or will it go through the 20 Gig uplink between the two Nexus allowing all vlans (VPN peer links) ? WE have approximately 10 voice vlans, Do we an example config for ERSPAN session where the source are vlans (As I am for fimilliar with RSPAN) ?

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Cisco Switching/Routing :: Redistributing EIGRP Using Route Map Nexus 5596 L3

Dec 18, 2011

this is a Nexus 5596 L3 with the latest code:
 
It looks like the deny statement is not working as I can see  all routes I am redistributing. I even did a deny on a specific route and I still see it in the routing table on another router in the autonomous system.The same below works fine on IOS platform. [code]

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Cisco Switching/Routing :: Nexus 2248 / N 5596 - AA Version Mismatch

Jan 27, 2013

I have a pair of 5596 running in a vPC with Nexus 2248 connected to each N5596.  When I do the command "show fex" I get the following output on the 2nd 5596

Number    Description      State            Model            Serial    
------------------------------------------------------------------------
101         FEX101   AA Version Mismatch   N2K-C2248TP-E-1GE   SSI16390705
102         FEX102   AA Version Mismatch   N2K-C2248TP-E-1GE   SSI163704AD
122         FEX122                Online    N2K-C2232PP-10GE   SSI16370195
 
I'm running version 5.1(3)N1(1) on both of the 5K's. I have looked through all the configuration and I am not understanding why I am getting this error.  I have tried to look it up on [URL], but not having a ton of luck. 

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Cisco Switching/Routing :: Nexus 5596 Giving Error In Connection

Aug 28, 2012

I have 2 datacenters running same equipement (two Nexu 5596 with FEX).I just took a look at the log just to see if everything is ok and I saw that I have the same error message (a lot of times) at both location :
 
%SYSMGR-FEX100-5-HEARTBEAT_LOSS: Service "satctrl" heartbeat loss 2 ,max 7,I though it was a problem with my peerklink-keepalive connection but I see the word FEX ....so i'm not sure...
 
Note that at both locations, my Nexus are connected back to back through the management port using transceivers. So it's a copper cable from the first nexus,  going into a transceiver, going to another transceiver in fiber and then back to copper to the other nexus.

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Cisco Switching/Routing :: Equivalent Command To Configure On Nexus 5596

Jun 21, 2012

what is the equivalent command to configure on the Nexus 5596?  OS version 5.1(3)N2(1) Catalyst 45k ip igmp snooping vlan 1036 mrouter interface Po20

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Cisco Switching/Routing :: Configure Nexus 5596 To Support Proper QoS For EF At The Core?

Feb 23, 2012

I am deploying a pair of Nexus 5596's with 3750 POE switches in the closets.  I'm looking for a best practice as how to configure the Nexus 5596 to support proper QoS for EF at the core. 

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Cisco Switching/Routing :: Nexus 5596 - Are VPC Peer Links Locally Significant

Mar 17, 2013

I currently have Nexus 5596 pair with VPC peer link Po1 between them.  My goal is to connect our new Nexus 7Ks to the 5K's using Fabric Path.  My question is during this inital setup with the 7K's.  Can I use the same port channel number on the 7K's as I did the 5K's?  Is the port channel locally significat?               

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Cisco Switching/Routing :: Nexus 5548 Or 5596 To Replace Cat 3750 And 4507R?

Feb 17, 2012

Any experience interoperating Nexus 5548 or 5596 with Catalyst 3750 or 4507R?
 
We're looking into Nexus to replace these switches in the long run.

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Cisco Switching/Routing :: Nexus 5596 - Remove Switch-Profile Without Interruption

Jun 11, 2013

i want to remove the sync-profile on each of two synchronized Nexus 5596UP without loosing the config stored in Switch-Profile. That means without connectivity interruption and re-configuration of interfaces in "conf t mode", for example. Since NX-OS Release 5.2(1)N1(1) there is a new command
 
switch(config-sync)# no switch-profile abc profile-onlyprofile-only—Deletes the switch profile without the local configuration. 
   
[URL]

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Cisco Switching/Routing :: Phone Connects To 3750-A / Nexus 5596 Does Not Support RSPAN

Feb 20, 2013

the phone connects to the 3750-A access layer switch (VTP mode client) which connects to the nexus 5596  (The nexus is the layer 3 device and set to vtp mode server) and finally we have a Voice recorder that connects to another access layer 3750-B switch.(VTP mode client)

 For voice recording I need to setup RSPAN and the nexus5596 does not support  RSPAN will the following have any impact on the nexus
 
IF I move the 3750-B to VTP server mode and run the command remote span on the VLan I need to Rspan its going to update the VTP data base in short it will update the vlan.dat file for all the switch in that VTP domain.
 
AS the vtp update reaches the nexus saying there is a change (keeping in mind the nexus does not support rspan not sure hows its going to handle that request and how its going to update its vlan.dat file)
 
Is it going to incremment the VTP revision number? can it crash the vlan.dat file  on the nexus ? or do nothing and ignore the update and stop the update from proceeding to the 3750 A switch?

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Cisco AAA/Identity/Nac :: Adding Nexus 5596 To ACS V4.2?

Jan 28, 2013

Does ACS v4.2 support the addition of the Nexus switches?  We have a few new Nexus devices that have been added to ACS, but cannot be accessed successfully.  A msg re: role based authentication is received.  Do I have to do something special in ACS to support this?
 
Nexus 5596 v5.1(3)N2(1)

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Cisco :: Nexus 5596 / Metro 3600 Switches Do Not Come Up On LMS 3.2

Nov 19, 2012

I am running LMS 3.2 and can not see the Nexus 5596 / ME-3600X-24FS-M Cisco switches on Cisco works LMS 3.2. Where I need them most is DFM the devices come up as unknown. An example below  10.125.202.1 is NExus 5596  and the rest are ME3600.
 
208.10.125.202.1UnknownN/AN/A209.10.115.1.4UnknownN/AN/A210.10.115.1.3UnknownN/AN/A211.10.115.1.2UnknownN/AN/A212.10.115.1.1UnknownN/AN/A 
 
going through the article below  looks like its not supported
 
[URL]
 
What are the options I have next ?  Can I upgrade to LMS 3.3 or only do an upgrade for DFM ?
 
Want to avoid LMS 4 as that's an installation from scratch.

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Cisco :: How To Retrieve Nexus 7010 Et 5596 Configuration Via Snmp

Mar 23, 2012

I want to know how to retrieve the complete configuration for a Nexus via the snmpwalk or snmpget commands...

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Cisco WAN :: Setup Nexus (5596 Running NX-OS 5.1(3)N2(1)) To Use IP Ospf Name-lookup Command?

Aug 8, 2012

I was trying to setup a Nexus (5596 running NX-OS 5.1(3)N2(1)) to use the "ip ospf name-lookup"command that I am using on IOS-based routers. Unfortunately this command does not appear to be supported on NX-OS and I cannot find a replacement.Is this another feature that's left out of NX-OS?

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Cisco Switching/Routing :: 5596 LACP Implementation With HP Servers

Apr 17, 2012

I need to implement LACP HP servers mostly DL 380 g7 with Intel based dual port with two types of Cisco equipment first scenario server connected to 3750x stack of 4 switch's .second scenario same server type connected to two Cisco Nexsus 5596 . My question regarding two type of connection.Is it possible to do active active ?Would it give fault tolerance ?With HP LACP implementation is there known issue or should i expect latency with such configuration?What is the maximal lag- channel group that is possible per type?

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Cisco Switching/Routing :: 5596 - Extending 10Gb/s LAN Between Sites

Dec 14, 2011

For a simple 4x sites design for backup consolidation (3x sites connected to one central site), does the design in the attached JPEG make sense and is the configuration achievable using the specified parts?
 
Brief Explanation:
- Each site is to have servers with 2x 10Gb/s Ethernet (both teamed/bonded/etc) and one NIC on each of the 2x switches in the site (if possible). Each site will also have 2x Cisco Nexus 5596UP Switch (though the P version may be used instead of the UP).
- Two of the sites are within 10KM of the central site
- The last site is about 35KM from the central site
- It is required to have a minimum bandwidth of 10Gb/s between any site and the central site
- I have specified 10Gb/s LW SFP+ and 10Gb/s LW SFP+ (for the 2x 10KM and 1x 35KM sites)
- are there any special licenses needed?
- as asked before, can such a "simple" design work as-is?
- what sort of single-mode fiber would fit the bill (especially for the 40KM link) - 9nm?

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Cisco Switching/Routing :: 5596 VLAN Traffic Span Across Vpc Peer-link

Apr 22, 2013

I have pair of 5596 switches in vPC. One host say "HOST A" is connected to the primary vPC peer and other "HOST B" on secondary vPC peer.Both are in same VLAN 10. Both hosts are vpc orphan ports as their NIC is configured in active/standby mode.I have configured span session on both vPC peers with span source as VLAN 10 in rx mode.Span destination is connected to secondary vPC peer. The issue here is that I am not able to capture the traffic originating from HOST A destined to HOST B which is traversing vPC peer-link.Same issue occurs for the traffic in reverse way and span destination on primary vPC peer. In a nutshell, any traffic which crosses vPC peer-link is not getting captured.
 
What could be the issue and is there any solution for it. Below mentioned is the span config and relevant interfaces. [code]

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Cisco Switching/Routing :: 2960 Switches That Have Crashed Without Any Reason

Aug 12, 2012

I have a number of 2960 switches that have crashed without any reason                  
 
Under show version System returned to ROM by address error at PC 0x108971C, address 0x0

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Cisco Switching/Routing :: 3845 Reloaded Immediately / How To Know The Reason

Nov 7, 2011

I have a 3845 router which got reloaded immediately and need to know the reason for the reload .Router have created  crash info detail .

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Cisco Switching/Routing :: Switch 3750 Of Stack Rebooted With No Reason

Oct 2, 2012

One switch of our stack of 8 3750 have reboot with no reason. Nobody was in the room server when it appears et there was'nt any electrical problem at this moment.

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Cisco Switching/Routing :: 2960 STP Mode Blocking For No Apparent Reason

May 30, 2013

I've run into an odd problem - I have connected two 2960s together with copper on FastEthernet interfaces, and STP on the new switch immediately puts that port into blocking mode. I don't understand why this would be, since there is only one connection between the two, in fact, there is only one connection at all on the switch that is blocking.

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Cisco Switching/Routing :: WS-C4506-E / Switch Automatically Restarts For No Reason?

May 25, 2013

Switch automatically restarts for no reason , I have upgraded the software.can not find fault. more crashinfo, see the following output:

HKZ-SSL-4-NAN-4506#more crashinfo:data 
Current Time: 5/27/2013 10:28:10  
Last Power Failure: 05/08/2013 16:55:28
Last Reload Status: 00000000
Last Software Reset State: 00000301

[code]...

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Cisco Switching/Routing :: 4506 - Switch Automatically Restarts For No Reason

May 25, 2013

A 4506 Switch reboot several times a day for no reason,  I have been trying to upgrade the software . Normal operation of more than ten days , Still there reason to restart . CPU and memory usage is normal

Switch output information below:

HKZ-SSL-4-NAN-4506#sh ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICES-M), Version 12.2(54)SG1, RELEASE SOFTWARE (fc1) [ code].....

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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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