Cisco :: Moving A Port-channel Without Taking Down Traffic?

Mar 6, 2012

So I have a current port-channel between two 6ks that I need to upgrade. There's too much traffic and the port buffers on the SUP7203B sort of suck. Microbursts are causing overruns like mad. Im going to move the 2x1gig port-channel to a 6724 and make it a 3x1gig port-channel. The switches carry production traffic across the link to the tune of about 400 meg during the lowest load time. Initially, I thought that I couldn't move the port channel without temporarily taking down the link but I think I have a workable solution now. Has anyone done this successfully before? Im curious what others have done. Also, to make matters worse, the existing port-channel is 'mode on' and I want to migrate to 'mode active' in the new channel

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Cisco Firewall :: ASA 5520 - Moving Inside Port To 1gb SFP Port

Jun 11, 2012

We have an ASA 5520 and it's inside interface is currently plugged into a fast ethernet port on a 3750.  I have just bought a 1gig SFP module and have copied the fast ethernet port config to the gigabit port, but the port seems to be flapping
 
The port conf gi is this:
 
interface GigabitEthernet1/0/4
description Link to Inside ASA
switchport access vlan 2
switchport trunk encapsulation dot1q

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D-Link DIR-615 :: Wired LAN - Switch Of Router Just Stops Moving Traffic

Mar 29, 2013

Every so ofter, the switch of the router just stops moving traffic between the LAN and to/from internet, though the WiFi keeps working and can still use internet.

I can still use the router's switch, and ping other computers on the local LAN, what happens is that the router stop routing wired traffic from/to internet, the rest of the issue is still the same, I opened reddit on my smartphone and there it was working via WiFi, but the would have none of it for the computers on wired LAN, not even accessing the router's page or telnet.

It is like some service or bridge between the switch LAN and the router itself dies... I'm still clueless.

The only "pattern" that I see is that my desktop is on line, because I can be not at home for 12+ HS and I can connect remotely to the server (rd p and trans droid) so I know it has internet access, but sometimes I think this happens when I turn on my desktop, like just now, this morning, but again, I feel is not every morning, trying to be more scientific about it I come here after every time it happens to record it, and also set the record straight about the issue description.

So, assuming it is not a hardware issue, because I did not had this problem in all 2011 and 2012, I do not overclock the router neither use other than default TX power level.

- How do I begin diagnosing this issue?
- If it is a known issue with this builds? I could no find it.

My goal is to be able to provide info for debugging the problem and possible finding a fix/workaround it. If it is indeed hardware failing, how do I even begin to diagnose it from that POV? The message is empty...

Even with the new build r21061 still happened two more times. Now the real problem to me, is that I cant even revert it to stock firmware, I tried even with:

- unplug router
- press and hold reset
- plug router
- keep pressing until power led blinks orange
- enter 192.168.0.1 (PC must have static IPA, i use 192.168.0.200)

Can't open 192.168.0.1 in FF nor chrome and does not even ping. [URL]. I just want to get it back to stock or do not hang up the switch-to-router(ing).

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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 Routers :: RVL200 IPSEC Channel All Or Some Data Traffic Through Tunnel

Jan 2, 2013

Is it at all possible to channel all/some data traffic through an established ipsec tunneled connection using the RVL200? I have successfully established an ipsec connection through RVL200 and RV042 routers and are able to connect to servers/computers behind it.Now I want to channel all or some traffic through the ipsec-tunnel for computers that reside on 192.168.1.0 subnet of RVL200 network.
 
Main office - RV042 router - 10.200.62.1
Remote office - RVL200 router - 192.168.1.1
 
I am trying to use the Advanced Routing option to add static routes but I am not 100% sure if I am configuring the routes correctly.To give an example of routing DNS requests for HOTMAIL.COM [65.55.72.183]: [code]For some reason this does not appear to work. I have also tried using the interface setting of WAN and tested - this also does not work.

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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 :: What Is Active / Passive Port-channel

Feb 7, 2013

what is active/passive port-channel..? and how it will do load balancing when my network traffic is flowing on both the ports.

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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 :: Port-Channel Supported On 6500s -w- SUP-2T?

Nov 2, 2012

are port-channel interfaces supported in 6500s -w- SUP-2T?
 
Inquiring if able to bundle a couple of 10GB ports on a 6908 via port-channeling.
 
12.33 IOS doesn't it, but haven't completely confirm whether 15.1 IOS does.

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Cisco Firewall :: Port-channel On ASA 5520

Jun 11, 2013

So everything I've read on Cisco's documentation here: URL says that I can create a port-channel on two physical interfaces that will uplink to a VSS pair.  However, the command is not recognized.  What am I missing? I've tried executing "channel-group #" on the physical interface and tried creating the port-channel 1st and neither commands exist.  I haven't seen it listed anywhere if it is only available after a specific piece of ASA software.  If it is the software what version at a minimum I need to upgrade to?  Below is an output from a show version
 
Cisco Adaptive Security Appliance Software Version 8.0(4)
Device Manager Version 6.1(3)
 
Compiled on Thu 07-Aug-08 20:53 by builders
System image file is "disk0:/asa804-k8.bin"
Config file at boot was "startup-(code)

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Cisco :: Inter VLAN Routing With Port Channel

Oct 30, 2012

I want to do the inter vlan routing packet tracer file url...configuration of MLS are as bellow can anyone tell me why vlan on switch0 can not ping vlan on switch1. [code]

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Cisco Wireless :: WISM2 No Port-Channel On 6504-E?

Jan 18, 2013

I have just been setting up a WISM2 in a test lab and for some reason the Supervisor is not creating a port channel on my 6500 as suggested in the WISM2 Deployment Guide. WISM2 is installed in an appropriate slot (according to same doco) and have attempted reset to factory defaults, removing and power cycling several times.

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Cisco WAN :: Configure 2801 With Multipoint Port Channel

Jan 5, 2012

Is it possible to configure a Cisco 2801 router with Multipoint Port Channeling? A service provider dropped a 4.5Mbps ( 3x T1s ) to one of our customers without any equipment. They assume the CPE responsible. If so, any links to documentation on this configuration. If not, what device will they need to buy from Cisco that can bundle these 3 T1s together then feed it into their router?

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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 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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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 Firewall :: 4948 ASA Trunking And Port-channel

Nov 20, 2012

Create a port channel out of interface 3 and 4 of ASAConfigure 2 sub-interfaces in those Po interface (my inside vlan and the dmz)At the 4948, configure a trunked port channel out of a single interface (funny ), then do the same in the second 4948Connect ASA port 3 to the 1st 4948's single-interfaced port channel, ASA port 4 connects the same on the 2nd 4948.

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Cisco Infrastructure :: 7609 - Port Channel Via SCE8000

Jan 27, 2013

I need to increase the link capacity of 10GE ​​to 20GE between two Cisco7609, so I feel the need to configure port channel between them, my little problem is that I have a SCE 8080 in the middle of both 7600 currently is configured inline. The SCE has 4 modules 1X10GE-L-V2 (currently in use 2), I was investigated and the truth is that I not found anything concrete about how to configure the SCE to "pass" etherchannel through it? What the SCE needs to support 20GE of traffic? (configuration and software)
 
I have two 10GE ​​ports available on the SCE

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Cisco Wireless :: Port Channel WLC 5508 And 3750?

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 :: 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 Firewall :: ASA5580 Port Channel To 6509 VSS?

Dec 17, 2012

Anyway, here's the situation I'm trying to configure several VLANs on my ASA to uniquely allocate to contexts, the VLANs will be trunked from my VSS. Unfortunately I'm not clear on how to achieve this, the configuration guide for 8.4 talks about multiple contexts and routed setups all which don't appear to apply exactly. I've configured the port channel at both ends and I've configured sub-interfaces on the port channel and assigned VLAN IDs. These sub-interfaces are then allocated to the contexts to set 'ip address' etc. I've not been able to successfully test this configuration and I am concerned that it is incorrect..

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Cisco WAN :: 40Gb Port-Channel Between 3750-x Switch Stacks?

Apr 9, 2012

I have a customer that would like a 40Gb port-channel between two 3750-x switch stacks.  When I try to activate four 10Gb ports in the channel, they go into error-disable.  However, I am able to create a 20Gb port-channel without issue.  I have had my configurations verified to Cisco best practice.
 
Is there a limitation on the amount of throughput that the 3750-x can handle?  According to the data sheet the 3750X-48T can handle 101.2mpps, based on two 10Gb uplinks so if my math is correct then a stack of two 3750X-48T should be able to handle 202.4mpps.
  
[URL]

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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 WAN :: 6500 Port Turns Amber After Unbind Channel

Sep 12, 2012

We have one cisco core switch 6500 series which was configured portchannel on several gig interfaces. This port is used as a trunk to enable communication between VLANs. The VLANs is where several high-end servers/hosts reside.After we disable / unbind the portchannel, the port turns amber. The following is what we did on the interface
 
1-no switchport command
 
2- make the port as access mode #switchport mode access
 
3- shut and no shut
 
4- clear arp
 
5- clear mac
 
what else can we do on that particular interface. It is just on that particular interface, the rest are ok.

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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 Firewall :: 6509E / FWSM Default Port Channel?

Jan 22, 2012

I'm doing some L2 cleanups across mutliple 6509E environments and I've found something consistent that I can't find in documentation. On all my pairs of 6509s where I have FWSMs bundled (6509-A has FWSM-1 is Slot 1 and 6509-B has FWSM-2 in Slot 1) I also have a port channel 305. Obviously when I do a "show run" or "show int desc" I don't see anything in slot one. It's a service module. But the port channel is referencing ports 1/1-6. And it's all in service/up. I was about to delete this as I thought it was some leftover config (TEST 6509s) until I went and saw the same things on our PROD 6509s. Is it cosmetic? Necessary? Can I delete it as part of my audit cleanup? Don't want to mess with it even in TEST without some information. Nothing on google that's clear and I can't find anything on CCO.
 
#################################################################################
6509-1#sho etherch 305 summ
Flags:  D - down        P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)

[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 Wireless :: 5508 / WLC Port Channel Host Flapping

Oct 9, 2011

I have setup LAG for one of our 5508 controllers and have connected 4 of the 8 ethernet ports to a 4507 switch. After configuring 2 port channels on the switch we are receiving a host flapping error between the port channels and it seems to be causing a serious slowdown on the switch. When I shutdown one of the port channels the error goes away and traffic returns to normal. I have the same configuration at other locations with the only difference being the switches used are 3750G-12S and I do not see the host flapping error. It appears to only be a problem with modular switches.
 
One other thing of note: I read a Cisco white paper on LAG and it suggested creating the port channels over 2 different modules. For example, put ports G4/24 and G5/24 in port channel 1 and G4/25 and G5/25 in port channel 2. I tried this but I still got the host flapping error.

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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 :: 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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