Cisco Switching/Routing :: Nexus 5548 - Hardware Port Channel Resource

Mar 30, 2012

I am having hard time in understanding the hardware port channel resource concept in Nexus 5Ks. Which scenario is considered as a hardware port channel and which is not. According to Cisco documentation, 5548UP switch with layer 3 daughter card only supports 8 hardware port channels, does this mean we can connect only 8 dual homed Fex to those 5Ks.Will a dual homed fex consumes a hardware port channel?

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Cisco Switching/Routing :: Default Ethernet Port On Nexus 5548?

Jan 25, 2012

How to remove the config from an ethernet port on a Nexus 5548 - send it back to factory default.

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Cisco Switching/Routing :: Nexus 5018 / Port Channel Down?

Feb 7, 2013

We are running nexus 5018 in our DC.What is the difference betwen "channel-group 214 mode active"  and " channel-group 216" Any difference?.. because i have problem with this config we are going build a server config? 
 
We have problem with porth channel down.
 
5K# sh int po71
port-channel71 is down (No operational members)
vPC Status: Down, vPC number: 71 [packets forwarded via vPC peer-link]

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Cisco Switching/Routing :: Create A Port Channel Between HP Servers (4 Nic) And Two Nexus 2k?

May 9, 2012

I am trying to create a port channel between HP servers (4 nic) and two nexus 2k.  The server side its a single team with 803.2ad fault taulerence and on the nexus side it have created two port channel (port channel 1 for nexus 2k1 and port channel 2 for nexus 2k2) and made them ACTIVE (channel group mode active)
  
But when i add a another server on different ports and port channel them the same way as the above server on nexus 2k1 and nexus 2k2, the first server stops pinging. so i have to sht down the first port channel and reopen them - then it works, however it says NO NETWORK ACCESS on the servers (running windows 2008). the only way is to reboot the server  i cant be doing this on a production network.

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Cisco Switching/Routing :: Nexus 5k Adding And Removing Vlans In Port-channel (vpc)

Dec 4, 2012

I am a bit confused by the output of 'show run' and 'show run switch-profile' that pertains to a port-channel interface configured in a switch-profile. My main gaol is to find out how can I add/remove the allowed vlans the port-channel (configured as trunk) carries. The setup is like this. I have 2 N5k in vPC domain and Etherner1/11 on both switches is configured as trunk vPC that connects to a core switch. When I issue ‘show run’ for the port-channel and physical interface I get the following output. [code] From above it seems the switch-profile configuration is missing the 'switchport trunk allowed vlan' in the port-channel interface. If want I to remove vlan 30 from the allowed vlan, should I go under the switch-profile mode and remove vlan 30 from the allowed list even though the switch-profile configuration seems to be missing this.

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Cisco Switching/Routing :: Nexus 4000I Port Channel Link Flap

Nov 8, 2011

We have a couple of IBM blade chassis with Nexus 4000I 10G blade switch in it. Four 10G ports from each Nexus 4000I switch are bundled into a port channel and connected to Nexus 7K. On the 4k end, one port in the port channel is doing down and coming up as an idividual port. After few minutes it is going down again and coming up as a port-channel member port. It is happening quite offen. [code]

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Cisco Switching/Routing :: Nexus 5000 To Change VLan Port Channel

Jan 29, 2013

I'm trying to change a vlan on a port-channel but I am getting this error when I apply the change:" error: command is not mutually exclusive",I have done this in the past but I cannot remember exactly what I should type to apply the change.

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Cisco Switching/Routing :: Change Number Of Internal Port-channel On Nexus 5000

Jan 3, 2012

I'm in the middle of a Nexus 5000 project and recognized today while configuring port-channels, that some of the interface numbers are reserved for internal use.
 
Is it possible to change or configure which port-channel interface numbers are allocated for internal use by NX-OS?
 
Unfortunatly I wasn't able to find a solution for this issue in the offical Nexus documentation, the search function of this forum or Google. If I did miss something or didn't look careful enough at the Nexus docs, I'm also happy with RTFM (... fine manual) responses and links to the info :-)
 
Additional info:
 
Nexus5k(config)# interface port-channel 128 ignored port-channel128: internally used, configuration not allowed
 
Port-Channels 111, 113, 115, 119, 121, 200, 211, 222 were created manually, but 127 - 129 were not.
 
Nexus5k# show port-channel usage
Total 11 port-channel numbers used
============================================
Used  :   111 , 113 , 115 , 119 , 121 , 127 - 129 , 200 , 211 , 222
Unused:   1 - 110 , 112 , 114 , 116 - 118 , 120 , 122 - 126 , 130 - 199
201 - 210 , 212 - 221 , 223 - 4096

[Code]......

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Cisco Switching/Routing :: Interface Resets Causes Port Channel To Flap Nexus 5010?

Feb 20, 2012

Here is an example of what each switch logs when a server drops offline.  Sample logs taken between 5:32am and 5:35am on Feb 20.   This particular one was having problems all weekend.  Switch #1 encountered over 2000 interface resets.  The corresponding VPC port on Switch #2 only had 13 resets.
 
NEXUS SWITCH #1
 2012 Feb 20 05:32:09 q91-sw01-5010 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel10: first operational port changed
from Ethernet1/10 to none
2012 Feb 20 05:32:09 q91-sw01-5010 %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel10: Ethernet1/10 is down
2012 Feb 20 05:32:09 q91-sw01-5010 %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel10: port-channel10 is down
2012 Feb 20 05:32:09 q91-sw01-5010 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel10 is down (
No operational members)

[code].....

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Cisco Switching/Routing :: Create A Port Channel That Spans Two Different Nexus 2248TP Switches

Oct 20, 2011

I have a router on  which I would like to create a port channel that spans two different Nexus 2248TP switches, and then create a couple subinterfaces on the router's po interface.  I've done this successfully on my primary router, but the config doesn't seem to work on the backup router.  The primary is running IOS 15, while the backup is running 12.4.25d advanced IP.  I do see the trunk come up from the switch side, and my router subinterfaces and po interface show up, however I'm not able to get anywhere from the router.  It's not even able to reach other hosts on the same network.  As soon as I remove the port channel config and use the physical interface and assign the same address used on the port channel interface, everything works as expected and I have connectivity.
 
interface Port-channel21
no ip address
hold-queue 150 in
!
interface Port-channel21.248
encapsulation dot1Q 248 native
ip address 100.100.100.1 255.255.255.0

[URL]

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Cisco Switching/Routing :: Configure Access Ports Into Port Channel On Nexus 7K Switch?

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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Cisco Switching/Routing :: Nexus 7000 - (service Policy Type Queuing Output) On Port-channel?

Jan 24, 2013

We are planning to implement the following policy map for egress traffic on an Nexus 7000:
 
policy-map type queuing dd-1p3q1t-8e-out-10G    class type queuing 1p3q1t-8e-out-pq1      priority level 1      shape percent 10     class type queuing 1p3q1t-8e-out-q2        bandwidth remaining percent 5    class type queuing 1p3q1t-8e-out-q3        bandwidth remaining percent 5    class type queuing 1p3q1t-8e-out-q-default        bandwidth remaining percent 90
 
We are using two N7K's to which is one N5K connected through a vPC. From the N5k we use a port-channel with 4 * 10G. Two of this four ports are connected to on N7K and the other two are connected to the other N7K. On the n/K's we are using vPC.
 
My question now are:
 
1. Where i have to connect the policy map? To the port-channel or on each physical interface?

2. When i have to connect this policy to the port-channel, how does i have to set the shape percent, when i would like to reserve 10% from the 40G?    Does i have to set the shape value to 5% on each N7K because vPC?

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Cisco Switching/Routing :: Nexus 5548 ARP Request

Feb 7, 2012

I have Nexus 5548UP, Version version 5.0(3)N2(2b), with a flat configured network. Customer has put several IP subnets on one Vlan. In one subnet is an Siemens SPS wich connects to a Server. This SPS is not reachable since I send a ping from the N5k, then everything works fine. Sniffering that port no arp requests from the N5k are captured. That hapens with every device (Siemens SPS) in the network. Every other clients and server are working fine and there are no problems.

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Cisco Switching/Routing :: Nexus 5548 Restart Itself?

May 10, 2013

I have a Nexus 5548 Recently restart itself for no reason I ran the command:
 
sh system reset-reason
----- reset reason for Supervisor-module 1 (from Supervisor in slot 1) ---
1) At 469203 usecs after Sat May 11 14:02:07 2013
    Reason: Reset triggered due to HA policy of Reset
    Service: eth_port_sec hap reset
    Version: 5.1(3)N1(1a)
 
sh processes log details
 
Start type: SRV_OPTION_RESTART_STATELESS (23)
Death reason: SYSMGR_DEATH_REASON_FAILURE_SIGNAL (2)
Last heartbeat 6.09 secs ago
RLIMIT_AS: 189894144
System image name: n5000-uk9.5.1.3.N1.1a.bin
 
I've been searching in Google/Cisco about the eth_port_sec hap reset and cannot find any reason, just something about the same error but in different technology:
 
[URL]
 
CSCub36000 #SNMP polling on eth_port_security objects no longer causes an eth_port_sec hap reset.I just to want to be sure, is the same reason...Or do you know something than can cause it on a Nexus Switch?

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Cisco Switching/Routing :: Nexus 5548 L3 Licensing

Jul 29, 2012

We have just purchased and installed the L3 daughter card for our 5548UPs and have also installed the L3 Enterprise Services pkg. The problem is, I cannot enable the EIGRP feature even though we have the Ent Svc lic. After doing a little more research, I see that the Lan Base lic is required to enable the L3 card and many of the L3 features (the card is currently in an "offline" state).
 
From what I have read on this board, the Lan Base lic is a free license that should be included with the L3 daughter card -- however, Cisco licensing will not issue me that license without a sales order (even though a Nexus engineer said it was included, the licensing group will not issue with an official sales order). Well, our vendor ordered the card and the Ent Svcs lic but for some reason we were never sent a PAK for the LAN Base lic.

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Cisco Switching/Routing :: Distribution Using Nexus 5548/96 With L3 Features?

Feb 12, 2012

using the 55xx as a L3 Distribution switch or even as a Core.  By enabling the L3 features does it allow you enabled L3 SVI's for VLAN interfaces or are there interfaces on the daughter card that are used for routing instead?

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Cisco Switching/Routing :: Unable To Create L3 SVI On Nexus 5548

Jun 11, 2012

The Nexus 5548 is running 5.1.3.N2.1a and has the L3 daughter card (N55-D160L3)I have the EIGRP feature enabled. By the way, when doing a 'sh feature' four EIGRP features show up like this: [code] To create the L3 SVI, I go into config mode and attempt to type 'interface vlan 10'. but this doesn't work. These are the only options under the keyword 'interface':
 
- ethernet
- loopback
- mgmt
- port-channel
 
I must be missing something simple but can't seem to see what that is.  What do I need to do in order to create an L3 SVI on this 5548?

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Cisco Switching/Routing :: Configuring Management Of SVI / Nexus 5548?

Aug 15, 2012

I want to configure management for some Nexus 5548's?I wanted to manage the switches via an SVI.  I have read the following document which gives details about the Management SVI but doesn't answer all questions.[URL]I am not running any layer 3 functionality on the switch, no layer3 license (which it mentions in the above link) Will I still be able to create a management SVI.  I know I will need to enable the feature 'interface-vlan' to setup a Management SVI, does that require a license?

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Cisco Switching/Routing :: Encounter FTP Error On Nexus 5548

Sep 4, 2012

I encountered problem while trying to copy file from Nexus 5548 to my ftp server (proteus - 192.168.12.220 - the Nexus switch is able to resolve name proteus correctly to 192.168.12.220). See below the working and not working scenarios. I have serached through Cisco Bug Database but unable to find any related bug associated to this problem. This Nexus is running the following NX-OS version.
 
n5000-uk9-kickstart.5.1.3.N1.1a.bin
n5000-uk9.5.1.3.N1.1a.bin  
Working (without specifying the username and full path)

[Code].....

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Cisco Switching/Routing :: Nexus 5548 And 6509 VPC Connectivity?

Nov 12, 2012

We have two 5548 switches connected to a pair of 6509 running in VSS mode. I am trying to understand the benefit of having bridge assurance on the uplink ports.
 
If we have the command spanning-tree port type network enabled we cannot do a non disruptive upgrade. If there is bridge assurance on the uplink it warns you of this. Yet if I do not run bridge assurance on the uplinks I can do a upgrade without any disruption.
 
Why in god would I enable bridge assurance on this VPC link if I cannot do a non disruptive upgrade?

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Cisco Switching/Routing :: Nexus 5548 - Can't Utilize ISSU

Jan 21, 2013

I need to upgrade the code on our two Nexus 5548's in order to facilitate the installation of a few FEX's, but due to the fact that seemingly all of my port-channels are in the STP DESG forwarding state, an ISSU upgrade is not possible. Everything connected directly to our 5548's are utilizing VPC's, including an HP Blade chassis, and several Netapp devices. If I follow the normal upgrade route, should I experience an outage, or should the secondary switch just continue passing traffic?

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Cisco Switching/Routing :: Setup SNMPv3 On Nexus 5548?

Sep 18, 2012

I'm trying to setup SNMPv3 on a Nexus 5548. We are using SNMPv3 on 3750's without any issue, but haveing issues getting it setup on the Nexus.I have been using the following link for the setup following it line by line. [URL]The part that I'm having issues with is when I try to enforce SNMP message encryption on a per user basis. When I issue snmp-server user (username) enforcePriv, I get warning: unable to update CLI users database. reason: role does not exist grounp not found.

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Cisco Switching/Routing :: 5548 Nexus Snmp Community

Nov 20, 2011

I am using cisco Nexus5548 and trying to enter a snmp community, but it doesn't accept it. I enter a community name that is less than 32 characters, with symbols, numbers and letters.

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Cisco Switching/Routing :: Nexus 5548 Fex Offline When Pre-Provisioning

May 9, 2013

I am setting up a new environment with 2 5548's and some 2248TP-1GE Fex's and Im running into an issue. I have the peer link and peer-keepalive link that appear to be good. When I configure the fex and vpc for the fex  manually on each switch without pre-provisioning the slot the fex comes online and everything appears to be good. I can see all the ineterfaces when doing a sh int br and the sh fex detail shows all good. When I do the exact same thing but pre-provision the slot the fex stays in an offline state. Ive tried disabling the port(s) connected to the fex while configuring everything then enabling them but same thing. [code]

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Cisco Switching/Routing :: Nexus 5548 - Private VLANs On FEX

Aug 13, 2012

regarding PVLANs and the Nexus, my understanding is that we cannot configure Private VLANs on a FEX trunk port with a NX-OS release older than 5.1(3)N2(1) for the Nexus5548... Is there any known workaround for this limitation (appart from performing a SW upgrade)?

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Cisco Switching/Routing :: How To Configure Nexus 5548 TACACS+

Dec 12, 2011

I am working for an Air Force client and am adding a handful of 5548s into their network.  My question is how Tacacs+ is configured.  My hands are tied in regards to testing in an operational environment so I want to ensure the configs are correct prior to deployment/maintenance window and avoid any remote issues.
 
I have read the "Cisco Press - TACACS+" config guide and it was somewhat vague in regards to operational deployment.

My basic NX-OS configs are as follows:

- feature tacacs+- tacacs-server key 7 "002A52xxxxxxxxxxxxxxxx8"- tacacs-server host 128.xx.xx.xx timeout 10- tacacs-server host 128.xx.xx.xx timeout 10- tacacs-server directed-request
 
When I try to set the following command string, aaa authentication login default group tacacs+ local, the NX-OS asks me the input a "server group name".  There are no server groups configured.  Do I need them? Can I get by without configuring a group name because the client probably will not.

The Cisco IOS devices are configured with normal aaa authentication/authorization parameters. Also, do the VTY ports default to sshv2 and the correct tacacs+ parameters with the "transport input ssh" command (not available)?

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Cisco Switching/Routing :: SFP-GE-T Module Support On Nexus 5548?

Jan 7, 2013

I am trying to install SFP-GE-T module on Nexus 5548UP Switch, but is giving the ‘SFP validation Failed’ error. The details of the switch is given below

Model : N5K-C5548UP-FA

The interface is configured with speed 1000 before inserting the module, still we are getting the same error. PFA logs for more details We have 8 Nos of SFP-GE-T modules , all are giving same error. We tried to insert the module on onboard as well as expansion module.

The same module is working fine on Cisco 3750X-24T-L Switch As per the Hardware installation guide , SFP-GE-T transciever is supported on N5K platform. Please extend your support in configuring SFP-GE-T module on N5K platform? We tried with SFP-GE-S module on the same switch , and the same is found working fine.

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Cisco Switching/Routing :: Interconnecting Nexus 5548 Via Dual 2960S?

Jun 10, 2012

I am trying to interconnect a pair of Nexus 5548 at adjacent sites, using 2 2960-S switches at each site, the reason being that the Multimode Fiber between the sites will only support 100mb and I need this up while I finish having SMF laid.
 
I have attached a diagram, just debating whether to use etherchannel or vPC - would like to hear some opinions...
 
Assume the interconnect between the 5548's needs to be 802.1q trunk

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Cisco Switching/Routing :: Using Nexus 5548 UP As Layer 3 Router Between Vlans?

Apr 26, 2012

just a simple question. Is it possible to use a nexus 5548 UP switch as a layer 3 router between different vlans on the switch without the layer 3 card ? Or is there no 5548 as a router with the  layer 3 card ?

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Cisco Switching/Routing :: Debug Command Not Working On Nexus 5548?

Nov 15, 2012

My Nexus is a 5548-UP model, NX-OS version :  5.1(3)N2(1b)
 
I try to debug an OSPF and an ICMP problem using the debug ip ospf command and the debug icmp command but not output appear on the terminal. As the switch is remote, I entered the terminal monitor command of course.
 
SG01NX01# terminal monitor
SG01NX01# debug ip ospf 1 packets
SG01NX01# show debug

[Code].....

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Cisco Switching/Routing :: Jumbo Frames Not In Effect On Nexus 5548

Mar 24, 2012

According to this Cisco URL jumbo frames should be put into play by changing default ethernet system class. 
 
Recommended configuration:
!--- You can enable the Jumbo MTU
!--- for the whole switch by setting the MTU
!--- to its maximum size (9216 bytes) in

[Code].....

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Cisco Switching/Routing :: Nexus 5548 Redundant Switch Setup?

Oct 8, 2012

Current our environment is the following:

Core1 ---- Core2
     |            |
      Nexus5k
          | |
N2k, N2k, N2k (FEX)
          ||
Servers, hosts, etc..
 
We would like to add another Nexus5k to this topology. However, it has to be a zero downtime infrastructure add-on. When setting up the keep-alive, peer-link, vPC and vdc domain, will there be any upset in network traffic on the current N5k?Also, are the Nexus5k configurations synchronized or are they independent from one another? Before setting up the new 5k, should i configure it to teh 6509's, and vPC's to the Nexus2k's before setting up peer-link?

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Cisco Switching/Routing :: GLC-T Error SFP Validation Failed On Nexus 5548

Oct 19, 2012

We inserted GLC-T modules and on Nexus 5548 they are showing SFP validation Failed  , as per Cisco doc GLC-T is support . Since we have 28 such modules and all after inserting showing same error. please see the below details. I also try configuring speed and inserting modules but no result ..let me know whether my GLC-T module is supported on Nexus 5548
 
INMUMFDS1SWCORE01# show module
Mod Ports  Module-Type                      Model                  Status
--- -----  -------------------------------- ---------------------- ------------
1    32     O2 32X10GE/Modular Supervisor    N5K-C5548P-SUP         active *
2    16     O2 16X10GE Ethernet Module       N55-M16P               ok
3    0      O2 Daughter Card with L3 ASIC    N55-D160L3             ok

[code]

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