Cisco Switching/Routing :: Configure Port-Channel Or Physical Interface On 3750

Jan 12, 2012

how to configure this. I did it in the past but kind of forgot how I did it.I have a stacked 3750 (two physical switches) connecting to a 2960.
 
I am creating trunk ports with limited access to VLAN 300, 600, and 700.
 
There is two interfaces connected from the 3750's(one on each physical stack member) to the 2960.I have the physical interfaces configured exactly the same.
 
3750 Config:
 
interface Port-channel2
!
 interface FastEthernet1/0/46
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1, 300,600,700
switchport mode trunk
speed 100

[code]....

Should I keep the configuration on the physical ports and not configure the Port-Channel Interfaces? Do I need to configure port-channel load balancing? Is the channel-group mode sufficient? Goal is to basically create 2 links to the 2960 to double the bandwidth and provide redundancy.

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Cisco Switching/Routing :: Difference Between Using Hsrp On Vlan And Physical Port On 3750 Switch

Nov 14, 2012

What the different between using hsrp on vlan interface and on physical port (routed port) on Cisco 3750 Switch? Wha the benefits?

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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 :: 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 :: Auto Qos Dropping Port Channel In 3750?

May 13, 2012

We have a switch that, when configuring auto qos on and edge port facing video equipment, the upstream port channel drops. I was wondering if no auto qos would have to be configured on the member ports of the port channel prior to enabling auto qos on any other ports. 

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Cisco Switching/Routing :: How Many Port Channel Can Configured In Switch 3750 X

Apr 23, 2012

I would like to know how many port channel can i configured in the switch 3750 X ? and if there is a limitation by IOS ?

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Cisco Switching/Routing :: C3500 XL Version IOS 12.0 / Error Add Interface Port-channel

Jan 15, 2012

a Customer ask me  to configure a etherchannel between two Switches C3500 XL Version IOS 12.0 follow the first configuration what I done and the output error show me by switch:

Sw01(conf)# interface port-channel 1  % invalid input detected at '^'  marker.   

I have to do something before add an new port-channel interface ?? why the Sw01 does not accept my configuration ?

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Cisco Switching/Routing :: 6513 / Port-channel Down But Duplicate Interface Created With (A) Up?

Nov 12, 2012

I have created 5 new 2 Gig port channels on a 6513 WS-X6516A-GBIC blade connecting to 5 4510R+E switches. 3 of the 5 Port-channels show up/up. 2 show down/down. However, for the 2 showing down, a duplicate Po interface was created with an "A" appended to the name that shows up/up. E.g:

Port-channel26             unassigned      YES unset  down                  down      
Port-channel26A            unassigned      YES unset  up                    up
 
Each of the 4510s has a second 2Gig PO to another 6513 with an identical config and all of those come up fine.

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Cisco Switching/Routing :: Configure Multi-chassis Port-channel Between VSS And 3750X?

Feb 26, 2012

Possible to configure multichassis port-channel between a VSS and 3750X (Port-channel not in the same switch on the 3750X stack). I got it using LACP but I need Pagp to get VSL redundancy “dual-active detection pagp trust channel-group 1”. I am using the last VSS IOS version 15.0(1)SY. I can’t get the option “switch 1 preempt”, has it changed with other option?

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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 :: Stack 3750X - How To Configure Port Channel To Aggregate Two Links

Feb 18, 2013

I have two stacks 3750X on two different sites with two links L_2_L, and I want to configure the port channel to aggregate the two links.
 
Site A                                                                                                  Site B
3750X -A1 --------------------------------------(          )--------------------------------------- 3750X -B1
                                                      (  L-2-L )
3750X -A2 --------------------------------------(          )--------------------------------------- 3750X -B2

Below the configuration that I have put the two stacks.
 
site A
interface Port-channel5
description Etherchannel group entre le stack 3750X-A et Switch Lan_2_Lan
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 11,12,999
switchport mode trunk
switchport nonegotiate
speed 100
 
But the problem is only one link is Bundeled in channel group, see below

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
5      Po5(SU)         LACP      Gi1/0/15(I) Gi2/0/15(P)

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Cisco Switching/Routing :: 2800 Router Physical And Sub Interface

Oct 25, 2012

I have a pair of router Cisco 2800 running in HSRP, now I want to configure one sub interface with another sub net, Will my current IP on physical interface work or do I need to create two Sub interfaces for each network. Do i must need encapsulation on sub interface

Current Config:-

Router 1:-
interface FastEthernet0/1description Connect to LAN_SW1 Gi1/0/1ip address 192.168.1.13 255.255.255.0no ip redirectsduplex autospeed autostandby 1 ip 192.168.1.1standby 1 priority 90standby 1 preempt
Router 2:-
interface FastEthernet0/1description Connect to LAN_SW2 Gi1/0/1ip address 192.168.1.3 255.255.255.0no ip redirectsduplex autospeed autostandby 1 ip 192.168.1.1standby 1 priority 110standby 1 preempt 

For second network I do not require HSRP
Router 1:-
interface FastEthernet0/0description Connect to LAN_SW1 Gi1/0/1no ip addressduplex fullspeed 100
[ code]...
Router 2:-
interface FastEthernet0/0description Connect to LAN_SW2 Gi1/0/1no ip addressduplex fullspeed 100
[Code]...

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Cisco Switching/Routing :: Vlan And Physical Interface Counters 3560x

Dec 9, 2012

vlan interface and physical interface (that is serving for this vlan ) have different input/output counters, there is only one physical interface in this vlan .
 
sh int vlan 64
30 second input rate 9000 bits/sec, 9 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec

[Code]....

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Cisco Switching/Routing :: C3550 - Configure Loop Back Interface On Gigabit Fiber Port

Sep 14, 2012

I am trying to configure a loop back interface like so: [URL], on the following device:

C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(50)SE, RELEASE SOFTWARE (fc1on port gig0/1 which is using a 1000Base-SX adapter. This is for troubleshooting purposes and it does not appear to be a feasible option.  Is there another way to accomplish in the IOS?

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Cisco Switching/Routing :: Configure LACP In 3750 For Two Port Connected To Dell M6220 Server Switch?

Aug 1, 2012

We have Dell M6220 blade server that server is connected to cisco 3750 switch. I am trying to configure LACP in 3750 for two port which are connected to Dell M6220 server switch. The channel-group 2 mode  active commande is not taking then its showing the error protocol mismatch and if i run show int port-channel 2 command the port channel status is showing down. The Dell server switch is on simple mode. below i have attached the required details.

Switch#show int port-channel 2
Port-channel2 is down, line protocol is down (notconnect)
  Hardware is EtherChannel, address is 0000.0000.0000 (bia 0000.0000.0000)
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set

[code]...

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Cisco Switching/Routing :: ASA 5510 VLAN Route Between Sub Int And Physical Port

Nov 13, 2012

Firewall: ASA 5510
Switch: Linksys SRW2048
Physical topology: PC - > VLAN99 - > SRW2048 - trunk - > ASA5510
Switch Setup:

I've been tasked with breaking up a network that has run out of IP's, and have decided to use VLANs to accomplish this. I have to use an ASA5510 to accomplish all the routing between hosts in different VLANs.Port 48 is trunked to the ASA eth0/0 interface, with VLAN 99 and VLAN 20 tagging packets, VLAN 1 Untagged. Hosts hooked up to appropriate ports on Switch.

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Cisco Switching/Routing :: Getting Physical Port Failure Error On Nexus 7010 Switch

Jul 9, 2012

I've Nexus 7010 switch installed in my DC. I've conncected Cisco router to one of the Ports. On the same port I'm getting following error message and hence, unable to form EIGRP neighborship.
 
DR-CORE-SW-S01-NEXUS7K %MODULE-2-MOD_SOMEPORTS_FAILED:
Module 1 (serial: JAF*******NGK) reported failure on ports 1/2-1/2 (Ethernet) due
to R2D2 : Speed patch failed - no frames transmitted in device 143 (error 0xc8f0
1273)

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Cisco Switching/Routing :: Replacing 3750 24 Port With 3750 48 Port?

May 21, 2012

We have a stack of switches that is at the max number of members allowed in the stack. Problem is we are running out of port density and need to add more ports. So instead of adding a whole new stack I would rather replace 2 of the 24-port swicthes with 48-port switches.
 
If the two 24-port swicthes we are removing are stack members and neither of them are the stack master, I should be able to replace the 24-port switches with the 48-port switches without bringing the master offline? If the new 48-port switches are running the same IOS version as the current 24-port swicthes, they should add themselves to the stack?Would I have to tell the new 48-port swicthes what switch numbers they are replacing in order for them to be added to the stack since we are at the max number of members?Also since the 48-port swicthes are replacing 24-port switches will the master give the 48-port switches the configuration for only the 24-ports?

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Cisco Switching/Routing :: 3750 - Procedure To Modify Channel Group Settings?

Nov 16, 2011

We need to change the Channel-group settings in 3750 switch from Mode ON to Mode Active. We have tried once by removing the physical interfaces from the port-channel group but we lost the connectivity to the secondary switch. Any step by step procedure without losing the connectivity between switches.

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Cisco Switching/Routing :: 3750 - Cross-stack Ether Channel 20Gb And STP

Feb 22, 2012

i want to realize a 20gb ring stp with 6  3750x stacked by 2. I want to install 2 3750x stacked configured in hsrp mode with other 2 3750 stacked. These 2 different stack are interconnected by a cross-stack ether channel 20Gb  fiber. On the other side of the room i want to create a new stack with 2 3750x with cross-stack ether channel 20gb connected with the previous 2 stacks. So, in total 3 different cross-stack ether channel 20Gb stacks interconnected creating a ring stp of 20 Gb.

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Cisco WAN :: 4506s - Switch Virtual Interface (SVI) Versus Routed Physical Port

Feb 28, 2012

What are the pros and cons of configuring a Switch Virtual Interface (SVI) versus a routed physical port between layer 3 switches?For example, if I have two 4506s and have a need to run HSRP and route between them which feature is better and why?
 
switch_a
!
interface vlan 25
ip address 10.10.10.1 255.255.255.0
!
interface fa0/1
switchport mode trunk

[code].....

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Cisco :: Port - Channel Sub Interface QoS

Sep 2, 2012

I have Cisco 3845 with two Gigabit interfaces configured as port-channel with sub interface and with QoS. However shape does not work.

[code]...

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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 :: 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 :: 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 WAN :: 3845 Port-channel Sub-interface QoS

Sep 13, 2012

I have Cisco 3845 with two Gigabit interfaces configured as port-channel with subinterface and with QoS.However shape does not work, why? [code]

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Cisco WAN :: Load Balance Of 3750 Port Channel?

Jul 17, 2011

What is the load balance method of 3750 port channel ( by source ip , or by source mac ) to diver traffic to paths? I have tried to use 10.242.104.101 and 10.242.104.102 as source ip, it will travel to the same link (G0/1) within one port channel (G0/1+G0/2). Howerver, if I later use 10.242.104.109, then this time it will traffic to G0/2 link. What's the concept behind.

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Jan 2, 2013

I want to configure Port channel for WLC 5508 and cisco 3750 Stack Switch. What changes I need to make on WLC and where?

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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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