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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Dec 9, 2012
Why the nexus 2k has 8 uplink ports ?
the nexus 7k or 5k can be devided into 4 virtual devices ( using vdc)and making 8 uplink ports in the 2k will allow us to use the extender for all the 4 vdc's with 2 uplinks ( for redundancy ) from each vdc
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Dec 14, 2011
Any opinion on what could cause loops on nexus 5000 ports that are connected to esx hosts ?
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Mar 20, 2013
we have two nexus 7k connected via vPC peer. We have edge switch connected to the core using HSRP via vPC.Now we have 1 orphan port connected to each Nexus (WLC).The problem is i cant seem to connect / ping the WLC (only 1 of them) that is connected to the orphan port and i think it is probably due to the packet arriving at the secondary HSRP and traversing through peer-link and dropping the packet.
HSRP address on Core: 10.10.10.1
vlan 10 - N7k1 - 10.10.10.2
Vlan 10 - N7k2 - 10.10.10.3
Edge Sw - 10.10.10.10 - Vlan 10
[code].....
Now what is the best practise for HSRP with vPC for orphan ports ? The problem is i can only ping 1 wlc from a machine. on doing a traceroute i find that the packets seems reach N7k1 and reach wlc that is connected to its own port but not to the WLC that is connected to N7k2 due to the packet travesing through peer-link and dropping at the peer-link.Now what is the best practise to sort this out and reach both WLC at the same time ? Do i move the WLC 2 to N7k1 ?
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Oct 31, 2011
we have several uplink ports on a verity of cisco switches connecting to the nexus 7000, recording CRC errors.most are trunked ports with the following configuration. [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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Nov 5, 2012
i would like to monitor traffic between multiple source ports to multiple destination ports on a nexus 7k. i lknow when you set up monitor session is between source and destination (laptop or traffic analyser) but is there a way i can set up between source and multiple destination ports and capture that traffic ?
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Feb 14, 2013
Can i configure access ports into port channel on Nexus 7K switch.If possible then provide the complete configuration.....
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Mar 19, 2013
Does Nexus 7K support Multiple VDCs sharing ports on a single line card. One of our cisco parnter engineers stated that cisco doenst recommend using same line card for multiple VDCs.The second VDC (Non-Default VDC) will be used four our Outside, and DMZ Segment, and to phyiscally segregate our Firewall from our Internal/Inside Core Switch without using a physical DMZ Switch.I know Cisco used the Nexus in this way in their PCI DSS 2.0 Compliance Document. Module is N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
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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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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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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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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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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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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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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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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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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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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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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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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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Oct 26, 2011
How to configure a nexus 5K?
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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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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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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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Nov 7, 2012
we hava a couple of 2960 switches and we are logging to a syslog server. Ports keep going up and down is it normal severity (error) ?
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Nov 9, 2011
I like the SG-300 switches for SMB and I'd like use them in our network. Design is quite simple just 6 SG-300 switches connected to one central switch using SFP ports (using 2 port trunks) so I need 12 SFP ports and this is my question. Could you recomend me switch with more then 12 SFP ports from Cisco for this SMB network ? I don't know all the Cisco product lines and I can't find it.
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Sep 16, 2012
I'm currently having a problem getting the ports on a 3560CPD (ports 1-8) to power on and establish connectivity. I have them hookedup and TURNED on by a 3560 PoE 8 port switch via the uplink ports. I can console into the CPD switch just fine and getting it configured.. but when I connect anything to the ports (1-8) I'm not getting any indicator lights.
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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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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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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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