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 :: 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 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 :: 4510R-E / Unable To Create A Port-channel And Apply Auto-qos For VOIP

Sep 15, 2011

I have a 4510R-E chassis with SUP7-E running IOS XE version 3.01.01.SG.  I am unable to create a port-channel and apply auto-qos for VOIP.If I configure auto-qos on the physical interfaces, I get this message when I try adding them to the port channel:
 
"The attached policymap is not suitable for member either due to non-queuing actions or due to type of classmap filters."
 
Auto-qos is not an available command in the port-channel interface configuration, but if I try adding the service policies that were created by auto-qos to the port channel manually, it lets me apply the input policy but on the output policy I get this message:
 
"A service-policy with queuing actions can be attached in output direction only on physical ports."
 
With the input policy applied to the port-channel interface, I tried addign the output policy to the  physical ports and I got this message:
 
"A service-policy with non-queuing actions should be attached to the port-channel associated with this physical port."
 
Is there a way to get the auot-qos policies applied to the port-channel properly?

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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 :: 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 :: 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 :: Can Port Channel In 3825 Connect To Two Different Switches

Jan 17, 2012

We have one 3825 router used as voice gateway. For redudancy, we want to connect it to two different switches which has STP and HSRP running. Can I create a port-channel with two Giga interfaces in 3825 and connect to two different switches? Should I configure port channel in switch with only one port in each port-channel? I know server can be connected to different switches with NIC teaming. I just want to mimic that kind of setup. I did one time for port-channel in 3825, but it was connected to a stacked 3750X. So it's different case now.

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Cisco Switching/Routing :: ME380x Port-channel From One Switch To Two Switches

May 8, 2013

I am trying to configure port-channel from one switch to two switchs, and only one interface of each switches make part of the port channel.Cisco IOS Software, ME380x Software (ME380x-UNIVERSALK9-M), Version 12.2(52)EY4, RELEASE SOFTWARE (fc1) [code]

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Cisco Switching/Routing :: 3750s Port Channel Between Server And 2 Different Switches

Jan 27, 2013

Here's what I'm trying to do.  We are having new storage servers installed that will be using NFS.  I'm being told that they need to have their connections port channeled.  Right now, the servers have connections to 2 different 3750s for HA. Is it possible to configure a port channel between these 2 connections?

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Cisco Switching/Routing :: 6509-E Switches Interconnected On Layer 3 Port Channel

Oct 3, 2012

We are currently designing  Layer 3 to the edge EIGRP solution  for our customers. The network is a hybrid of collapsed  core (Core to access) as well as a three layer design (Core/Distro/Access) for connectivity to the Data Centre, Internet, Wireless Blocks etc.The  core of the network contains two 6509-E switches interconnected on a  Layer 3 Port channel (no VSS). Access Layer switches (3750-X series running Stackwiseplus protocol)  connect to the core switches over p2p routed links and Distribution layer switches (3750X stackwiseplus) provide connectivity to the  Data centre, Internet, wireless blocks etc.
 
The access and distribution switch stacks(Cisco 3750-X) are set up with two or three member switches with uplinks multihomed to the primary and secondary core switch with each uplink included in EIGRP. In each of the stacks, one of the switches controls the operation of the stack, which will be  the stack master.As the Cisco Stackwise architecture is not SSO-capable but NSF aware, all Layer 3 fuctions must be re-established during a master switch outage. To minimize control plane impact and improve Layer3 convergence, uplinks should be diverse and originate from the member switches instead of the Master switches in the respective stack. This is as per Cisco recommended design solution.The above solution can be setup if there are more than two switches in the stack. i.e. uplinks are configured on the backup member switch modules.
 
1.But what about stack with two switches..Which switch should be set up as the Master for a two member stack with uplinks to the core primary and secondary from each switch(Master and Backup)
 
2. For Layer 3 routing, does the routing takes precedene over switch failures? Say for eg. In a two member stack, the master switch with uplink to primary fails, does EIGRP provide a fast convergence to route traffic via backup secondary and does not wait for the control plane on the switch stack to converge? All the access to core links will be set up for ECMP.

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Cisco WAN :: Nexus 5000 - Can't Assign Port To Port Channel

Feb 9, 2012

I'm unable to assign port E2/1 to port channel. I get following error:
 
NEXUS5K(config)# int e2/1
NEXUS5K(config-if)# switchport mode trunk
NEXUS5K(config-if)# channel-group 14 mode active

[Code].....

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Cisco Switching/Routing :: Can N2K 2248TP-E Work With N7K

Mar 9, 2012

The N2K data sheet says that it doesn't, but I want to confirm that it isn't old information. How to have this working and what versions are you using?

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Cisco :: Nexus 5548UP 2248TP To 3650G Vlan1 Trunking

Jun 4, 2012

Got an odd problem with trunking, all vlans except vlan1 trunk perfectly. Link is from a pair of dualhomed FEX 2248TP's to some 3650G Switches. Nexus running - version 5.1(3)N2(1) 3560's running - 12.2(53)SE2 & 15.0(1)SE2

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Cisco Switching/Routing :: Ether-channel Between Nexus 2232 And Blade Switch 3020

Aug 6, 2012

I try to connect a cisco blade switch 3020 to Nexus 2232 with etherchannel, but when I connect the second link a obtain flapping on vlans. [code] why the vlans are flapping ? it's something wrong on the config ? [code]

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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 :: Nexus 5010 - Unable To Create More Than 256 VLAN In N5k

Jun 23, 2012

I am not able to create more than 256 VLAN in Cisco Nexus 5010 switch. While creating I am getting "No VLAN resources available for VLAN creation" Details below -
 
Switch model - 5010
Software : NX OS 4.0 (1a)
 
Error Message:
Nexus_5010(config)# vlan 417
ERROR: No VLAN resource available for VLAN creation.

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Cisco WAN :: Port-channel Between Nexus 7000 And 55900?

Jan 16, 2011

I have configured my Nexus 7018 and 5548 as  follow (see diag attached).Both 7000 and 5500 are vPC pair(po1and po2). Now I have created port-chanel between 7018and 5548 as port channel PO3 on 5500. Would it give me 20g bandwidth as PO3?or 10g only uplink to 7018? Do I need to config all four 10g links in PO3 on both 5500  and 7000 switches to achieve max b/w and failover?

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Cisco WAN :: Nexus 5K (version 5.0.3) With Port-channel Bandwidth?

May 22, 2012

I have port-channel configured on Nexus 5K (version 5.0.3) with below configuration.
 
interface Ethernet1/9
  switchport mode trunk
  switchport trunk allowed vlan 60
  speed 1000
  channel-group 105 mode active

 [code]....
 
We have added GLC-SX-LH module to E1/1 and E1/10 and speed is set to 1000 (1Gig) Now other side of E1/9 and E1/10 are not connected. Port-channel status is down

Po105        1     eth  trunk  down    No operational members      1000(D)  lacp
 
show interface port-channel 105 shows different bandwidth (100) MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,question is under interface port-channel105 speed 1000 command inserted automatically.Now if we connect otherisde of interface, during port-channel comes up.what  will be the port-channel interface bandwidth ? will it change to  2Gig(2000). Why speed 1000 command inserted automatically on  port-channel.Since it is migration, we want to be more specific on the port-channel configuration?

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Cisco Switching/Routing :: Will All 4-ports Of N5K Will Be Same Port-channel

Sep 12, 2012

Have 2 N2K with dual-connections to both 2 N5K, will all 4-ports of N5K will be the same port-channel. N2K as well ?

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Cisco Switching/Routing :: Port-Channel Between 4507

Nov 29, 2011

I need to configure a port channel between two sw 4507R. with port Giga, but those port are in different modules.
  
Sw-1
interface GigabitEthernet5/48
description **** Conexion Switch-2*****

[Code].....

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Cisco Switching/Routing :: 3750 As A Port Channel Bridge?

Dec 7, 2011

I have 3750 core/distribution switches with routing enabled in two offices connected with copper link and L3 port channel interfaces. NewOffice#2 has moved about 5 miles farther away from office#1 and I have to deploy new core/distribution switch connect it to old core#2 via F.O and move all access switches with it. Old core will stay in old #2 offices as a bridge between office#1 and new office#2 Office#1core<->copper (Ethernet) <->oldoffice#2core<->f.o. <->new office#2core How I should configure port channels ports on oldoffice#2 core to act as bridge between office#1 core/dist and newoffice#2 core/dist without changing anything else (ip, etc) on whole network

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Cisco Switching/Routing :: 6509 Trunk To Port Channel

Apr 22, 2012

I have 2 Cisco 6509 switches linked together via single Fibre as a trunk.I want to change this to a port channel where I will add another 3 fibre ports to the port channel but what order do I do this to minimise any disruption.

1-Configure PortChannel and add the 3 new ports, this will bring up the Port Channel but what effect will this have on traffic currently going over the single Trunk link? Will spanning tree go mad, how will switches react?

2-Convert existing Trunk link to Portchannel then add in new ports to PortChannel, I guess in doing this there will be a small hit on traffic as it changes to a port channel.

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Cisco Switching/Routing :: Lost Port Channel Between 6513

Feb 24, 2012

We have 2 6513's that are linked via 2 10 gig interfaces, using an LACP channel.I received an alert this aft stating that the far 6513 was unreachable and the port channel int PO3 had gone down, the 2 10 gig interfaces had also gone down on either side. 5 mins later PO3 had resestablished itself and has been fine since. [code]

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Cisco Switching/Routing :: 3750 - How To Setup Port-channel

Jan 22, 2012

I set up a port-channel trunk between a acess switch 3750 ( int gi2/0/1 and gi2/0/2) and Core 6509( int gi7/11 and gi7/12).
 
On the both the 3750& 6509 I configured:
 
interface Port-channel15
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 100,103
switchport mode trunk
 
But the ports on the core g7/11 and g7/12 keep shutdown and when I do show interfaces port-channel 15, it show the interface is shutdown.

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Cisco Switching/Routing :: Min-Link Configuration On 3750-X Port-channel

Feb 27, 2013

I am building a new network and intended on using the min-link feature on my port-channels between a 3750-X series switch and Nexus 4k.

However reading further into this it seems this feature is only supported on higher end models. I cannot find any reference to the min-links feature in the 3750-X configuration guide. Is this an available feature?

The 3750-X model is WS-C3750X-24T-L running IOS 12.2(55)SE3 IP Services

My thoughts is that the is only an LACP supported feature so I may not see the command until I have entered an LACP specific command on the port-channel but unfortunately I do not have a 3750X to verify this on at present.

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Cisco Switching/Routing :: 6500 Setup In VSS Configuration - Port Channel ID

Jan 22, 2012

I have a pair of 6500's setup with VSS and there is currently only one link between then. However one end of the link is on Po10 and the other end is on Po25.  If I move the Po25 over to Po10, will things break? It seems to be working fine now. I'm about to add a second link and I'm concerned about the current configuration.  It makes more sense to me to have both ends of the same link on the same port-channel ID.  I've seen documentation which states otherwise however.
 
interface Port-channel10
no switchport
no ip address

[Code]....

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Cisco Switching/Routing :: 3560 / Allowing Etherchannel Or Port Channel?

Mar 3, 2012

I am using 3560.IP rouitng is being turned off on this.Curious to know if I will create etherchannel or port channel.I think etherchannel.Correct me if I am wrong.On connecting switches I have vlan10,20,30 to be allowed.I am sure I need to allow these all vlan in 10,20,30 which are on the trunk port on each side switch.Post that will add channel-port lacp and make it in active mode.Is that correct.This way traffic will be load-balanced/aggregated on minimum 2 ports who are the part of this.

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