Cisco Switching/Routing :: VPC Configuration Between Nexus 5020 And 5596UP
May 6, 2013
We have two Nexus switches in our network, one of them is Nexus5020 other Nexus5596UP. System image is identical on both switches 5.2(1)N1(4). When we try to setup VPC between these switches we see that all configured vlans on VPC peer link between Nexus switches are blocked by spanning tree protocol with message "Bridge Assurance Inconsistent, VPC Peer-link Inconsistent". We still can't solve this problem.
Topology:
NEXUS_5020---Peer_link(Po2)---NEXUS_5596UP
/
/
Member_link (Po100) Member_link (Po100)
/
/
SERVER
Configuration:
NEXUS_5020:
speed 1000
interface Vlan2000
no shutdown
description VPC_keepalive_link
vrf member VPC_kepalive
ip address 10.55.55.2/30
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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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Jun 10, 2013
I have two Nexus 5596UP that will be connected together via VPC-Peerlink. From there I want to connect both 5596UP's to a 6509-VSS via VPC.The Nexus 5596UP's will be essentially layer 2 switches, all routing will be done the 6509-VSS's.
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Jan 23, 2013
When I read Nexus 5K install guide , I found the follow :The Cisco Nexus 5596UP switch has the following features: # •48 fixed 1- and 10-Gigabit Ethernet server connection ports on the back of the switch AND The 48 fixed ports support 8-, 4-, 2-, or 1-Gbps Fibre Channel transceivers and 1- or 10-Gigabit Ethernet transceivers. Does these is a conflict ?The 48 fixed port on this switch support only 1- and 10-Gigabit Ethernet or 8-, 4-, 2-, or 1-Gbps Fibre Channel and 1- or 10-Gigabit simultaneously ？
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Jul 1, 2012
We have two Cisco Nexus 5596UP switch.
We upgraded
n5000-uk9-kickstart.5.0.3.N2.1.bin (Fan speed %40) to
n5000-uk9-kickstart.5.1.3.N2.1a.bin (Fan Speed %60)
but 20% increased speed of the fans. What could be problem?
Software
BIOS: version 3.5.0
loader: version N/A
kickstart: version 5.1(3)N2(1a)
system: version 5.1(3)N2(1a)
[code]....
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May 11, 2013
I'm trying to get the VFC up in B22-FEX blade in Dell which is connecting to Nexus 5596UP.
The message I get is
# sh int vfc1033
vfc1033 is down (Error Disabled - VLAN L2 down on Eth interface)
Bound interface is port-channel3
Hardware is Ethernet
Port WWN is 24:08:00:2a:6a:0d:db:3f
Admin port mode is F, trunk mode is on
[code]....
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May 27, 2012
The below nexus 5020 nx-os version and type/revision of my GLC-T is compatible with each other? I noticed also the "Transceiver calibration is invalid" when i do show int e1/8 transceiver details , what does it mean?
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Oct 24, 2011
I have an alert from monitoring system about: “ fan for this system is not in the NORMAL state”. In the switch I found that the problem is with fex 3, see below:
Nexus5020# sh env fex 3 fan
Fan Fex: 3:
------------------------------------------------------
Fan Model Hw Status
------------------------------------------------------
Chassis N2K-C2148-FAN -- failure
PS-1 N2K-PAC-200W -- OK
PS-2 N2K-PAC-200W -- OK
Technician said: fans appear to be operational, BUT the only thing that appears abnormal is STAT light is amber (not sure what it means).
Also, if I compare the temperature from module 3 with module 2 (which doesn’t have an alert) is almost the same, this is why I think the fan is working fine, since module 3 is not hotter that module 2.
What I can do to reset this fan (chassis)?
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Jan 22, 2012
I have two N5K (5020) switches with NX-OS - 5.0(3)N2(1). These two switches form VPC domain: peer-link = 2*10Gb ports (1/17-18) and peer-keepalive link over managements ports.Also I have two HP servers with two 10 Gb ports on each server.Each server conected by one link to each N5K switch (1/9-10). N5K downlinks configured as access ports with LACP Active mode.There is only one VLAN (1).When "no shut" command entered on N5K access ports - ports going in "not connected" status, begin flap and then going in "linkFlapErrDisabled" state.In attach - "sh run" from N5K.
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Aug 7, 2012
I'm trying to create a vpc between a Nexus 5010 and Nexus 5020 switch. I recently upgraded the software so they are running the same version. I connect get a vpc link. Is there something wrong with my setup? Is a vpc between a 5010 and 5020 even possible? They are connected using a pair of Intel X520's in 802.3AD teaming mode. [code]
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May 29, 2012
Our customer is willing to have a Cisco Nexus 5020 to provide server connectivity and this Nexus would go connected to their core switch 6509. They are concern about Spanning tree compatibility between the Nexus and the 6509. Are they fully compatible for Spanning tree?
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Mar 3, 2013
I have a customer who is having some issues with 5m passive HP twinax cables, 537965-001, with a Chelsio 10G NIC. Aside from NIC driver issue, if NX-OS recognizes this SFP+, should it be expected to work in a 5020 running 4.2(1)N1(1)? Whether Cisco has certified passive HP twinax cables? I have included output to 'transceiver details' to a Cisco twinax and the HP (WL GORE) cables.
Nexus5020# show interface eth 1/7 transceiver details
Ethernet1/7
sfp is present
name is CISCO-MOLEX
type is SFP-H10GB-CU3M
[code]....
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Feb 19, 2012
I would like to make a design with 4 Nexus 5596UP. 2 of them equipped with Layer 3 Expansion Module so they can serve as core layer and the other 2 Nexus used as Layer 2 for aggregation server layer.The 2 Nexus in the core layer will run HSRP and will peer with ISP via BGP for Internet connection The 2 Nexus in the aggregation layer will be configured as layer 2 device and have FEX and switches connected to them.What I am ensure of is how the vpc and port-channel configuration should look like between the 4 nexus. What I was thinking is to run vpc between the 2 Nexus in the aggregation layer and between the 2 Nexus in the core layer. Than I was thinking of connecting each Nexus in the aggragtion layer to both Nexus in the core layer using port-channel and vice-versa.
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Jul 24, 2012
1. We would like to pre-provision a 2248TP FEX on my 5596UP (NEXUS 5596 running 5.1(3)N2(1a)). Problem is that I can't choose this FEX model. I have the choice of a 2248T or a 2248TP-E, but no 2248TP. [code]
2. on pair of NEXUS 5596 running 5.1(3)N2(1a) with a Layer-3 module installed in both.When doing Enhanced vPC - connecting all FEXs dual-homed to both 5596 - how many FEXs can I have in total ?
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Mar 22, 2010
I have two different model's of GLC-T SFP's. One is PN 30-1410-02 the other is PN 30-1410-03. The -02 will not work in Nexus 5020 or an ASR-1000 router that I have, but works fine in my Cisco Wireless Controller. The -03 works fine in any device. My problem is when ordering, you can not specify the -03 they get ordered as GLC-T and none of my suppliers can assure me that I would get the -03.What is the difference between these two?
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Sep 10, 2012
I have a problem with the switches Nexus, is impossible authenticate from tac_plus. In other company, I configured ACS for authenticate the Nexus Switches and OK The configuration of my tac_plus is:
user = gian {
login = cleartext prueba
member = nexus
group = nexus {
default service = permit
service = shell {
#double-quote-values = yes
#shell:roles=""network-admin""
cisco-av-pair*shell:roles="network-admin"
The configuration of switch is:
tacacs-server host xx.xx.xx.xx key 7 "xxxxx"aaa group server tacacs+ AAA_TACACS_SERVER server xx.xx.xx.xx source-interface mgmt0
aaa authentication login default group AAA_TACACS_SERVERaaa authorization commands default group AAA_TACACS_SERVER localaaa accounting default group AAA_TACACS_SERVER
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Apr 23, 2013
What is the correct command to check the hardware of a Nexus 5020, like the show Inventori, show diag etc Used the same or is there a specific one for these items?
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Oct 10, 2011
2 Nexus 5020 (SysObjId 3.719) brings internal error in inventory collection as following:"RICS0001: Internal Error, unable to process the collected data from the device".whereby 2 other devices from same type, same sysobjid are working well. SDT from v401 shows this device as supported.
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Jan 26, 2012
I have followed every piece of cisco documentation I could find on this and I still can't get vPC configured to actually work. The VLANs stay in a suspended state so no traffic flows across. Below is my configuration:vrf context management ip route 0.0.0.0/0 10.86.0.1vlan 1,vlan 86 name I.S_Infrastructure,vpc domain 1 role priority 1000 peer-keepalive destination 10.86.0.4,interface Vlan1,interface Vlan86 no shutdown description I.S._Infrastructure ip address 10.86.0.1/24,interface port-channel1 switchport mode trunk vpc peer-link spanning-tree port type normal,interface Ethernet1/1 switchport mode trunk channel-group 1 mode active,interface Ethernet1/2 switchport mode trunk channel-group 1 mode active ,interface Ethernet1/3,escription Connection to Mgmt0 switchport access vlan 86 speed 1000.
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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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Sep 10, 2012
I would like to know if the power the Nexus 7K allocates per module is configurable?For example, we are only using the 8 didicated ports on our N7K-M132XP-12 card. The Nexus budgets 750W for the module, but given that we will only ever use 8 of the 32 ports we would like to allocate the remaining power elsewhere.
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Dec 6, 2012
I am looking to implement a QoS policy on a pair of Nexus 5548 UPs. FCoE is a factor here. I have created the following configuration and would like to get a few pairs of eyes to take a look at this for a quick sanity check.
How to make sure this config is valid. Also, I realize I'm applying an MTU of 9216 to all classes right now, this will be phased out incrementally.
class-map type qos match-all class-platinum
match cos 5
class-map type qos match-all class-gold
match cos 4
class-map type qos class-fcoe
match cos 3
[code]....
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Feb 14, 2012
When transferring traffic between two VLANs my throughput rate seems to drop to about 1.5 - 3.0 megabits / second.
My setup is like this...
Two Nexus 5020 switches. (switch01 and switch02)
Two Nexus 2232PP fabric extender switches. (switch03 and switch04)
Two Dell R815s with Chelsio and Intel NICs. (host1 and host2)
The servers run Xenserver 6.0, but as part of testing with this I've tried installing RedHat 6.2, VMware ESX 5.0 (vsphere 5).
The issue occurs when using trunking and transferring data from one VLAN to another. Example...
VM1 is in VLAN401 with an IP address of 10.100.40.40. The VM is on Host1. VM2 is in VLAN402 with an IP address of 10.100.50.50. The VM is on Host2.
I've been using a network throughput tool called iPerf to test and I find that I can only get a throughput rate of about 3.0megabits.
If I switch VM2 to be in VLAN401 with an IP address of 10.100.40.41 I get a throughput rate of about 6.7gigabits/sec.
In the above scenario, I'm using a Layer3 interface on the Nexus 5020, but in production we use a Vyatta virtual firewall.
I worked with Citrix for about 3 months and that was a dead end.
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Jan 19, 2013
We have Nexus 7009 switch and want to configure the span session
We are using F2 and M2 card both are in seperate differeent VDC.And out server is connected to M2 card on eth 4/6 and want to monitor the traffic from vlan 161Which is made on F2 card.
Connectivity is like this.
Nexus 1 Nexus2
Slot 3: F2 card Slot 3 : F2 card
Slot 3: M2 card Slot 3 : M2 card
[Code]......
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May 23, 2012
I have a Cisco Nexus 3064 that I am using as part of a flat network for the Lab. I have 30 Virtualization Servers(MS HyperV and VMware vSphere) connected to this switch and I want to enable jumbo frames. The Virtualization Servers are able to ping the local VM's using 8K bytes. However I am unable to ping from server to server using 8K bytes. I have configuration (in abbreviation). All the servers are in the same network which I configured as L2 ports with the "switchport" command. However, the interface "MTU" command is unavailable in L2 mode. I am only able to get the interface "MTU" command only in L3 mode with the "no switchport" command on the interface.
# int eth1/2-45
# no switchport
# mtu 9216
# no shut
I can ping the servers with less than 1500 bytes, but anything larger fails.
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Feb 17, 2012
What is the purpose of these default configuration lines? What do they mean? I can't find an explanation of them anywhere. I believe some are written to the config when FCoE is enabled..
I would like to know exactly what they are doing.
class-map type qos class-fcoe
class-map type queuing class-fcoe
match qos-group 1
[Code].....
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Feb 16, 2013
I have two 5548s as core. 8 FEXs are multihomed (advanced vPC topology?) to both the cores.Suppose, I have to configure a bunch of ports on the FEXs, say Eth101/1/10 - 20. I would login to the first core and apply the configs.
My question is - do I have to do the same on the second core also? Or would the first core replicate the stuff to the second core? I know about port-profiles/CFS and such. But, without that would it automatically sync to second core?
For testing purpose, I went to Core 1 Eth101/1/10 and put a description "TEST". Wrote the config. After 5 minutes logged into second core and did show run Eth101/1/10. But, the description "TEST" didn't show up there.
Also, doing sh run on any FEX port is faster on one of the cores and very slow on second core... all the FEXs have 20 GB uplink to core 1 & 2 (so total 40GB in vPC, max pinning 1)
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Apr 7, 2013
This is regarding CISCO logging configuration.We palnned to implement enable logging on all the cisco nexus switchs.we are running HP arc sight in our DC this device monitor all the CISCO devices.We want to enable logging with this Arc sight device.Just I would like to know about config commands for Nexus device, what is the command to enable logs which is include "who is login & logout?, interface down information?,who was did conf t ? & every logs"
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Sep 10, 2012
we've been using IOS for a long time, but are relatively new to NX-OS. We've got a central syslog server that all our devices log to. No matter what we do, we can't get our Nexus switches to log there. Here's my current attempt:
Nexus 7009, NX-OS 6.0(1)
# sh logging server
Logging server: enabled
{redacted}
server severity: debugging
server facility: local7
server VRF: default
[code].....
The default VRF is working. I see log entries in the logfile, but nothing arrives at the syslog server. It's not a config issue on the server, because tcpdump shows that no packets arrive from the IP for loopback 0.
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Apr 29, 2012
What is the exact command in restoring the running-config on a Nexus 7010. Is it the same command / procedure as the Cisco IOS?
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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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Dec 22, 2011
Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.
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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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