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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Jan 17, 2012
Does the Nexus 5548P support 1 gig SFP connections ? Here is the image file we are running ?
bootflash:/n5000-uk9.5.0.2.N2.1.bin
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Oct 13, 2011
The module just won't come up. Stays in off-line state. On two identical 5Ks, so its not hardware failure.Have the licenses and running code 5.0(3)N2(2).
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Oct 7, 2012
what Cisco LAN Management Solution is required to support Cisco Nexus 5548P switches and Cisco Nexus 5596UP switches?These new Cisco switches are being implementing on customer network and he ask us that he requires these equipments be supported on a LMS solution (customer currently is using LMS 3.2.1)
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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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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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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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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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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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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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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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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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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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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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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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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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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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Feb 3, 2013
I need to upgrade my core switches at one of our locations (two 7009s with dual sups) from 6.0.1 to 6.1.2. After looking through the release notes it appears that this will be a disruptive upgrade?how long should I expect for the disruption? Are we talking a 7009 boot cycle (10 - 15 minutes) or something longer?How many disruptions can I expect? I suspect 1 per chassis during the failover to the standby but I'd like to validate.Is there any compelling reason to upgrade the EPDL? From what I can see, again from the release notes, this is only necessary with F2 cards if I were to upgrade to Sup2s . I'm in a healthcare environment and this upgrade will be affecting one of our major campuses so the more info I can get to the managers the more accepting they will be for the disruptions.
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