Cisco Switching/Routing :: 3750 Etherchannel Between 100mb To 1Gb Ports?
Jun 4, 2013I'm trying to configure and etherchannel between 2 switches. A 3750 and a 3750G, but the port channel is down: 3750. [code]
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Cisco Switching/Routing :: Etherchannel Does Not Go Up / Up From 3750 Stack To 6k5 Vss
May 19, 2012We have two 6k5 configured as vss and it is working fine. For each floor we have a 3750 stack. In each 3750 stack we have 4 switches. From the first 3750 we have a fiber link to the first 6k5 and from the fourth switch we have another fiber link to the other 6k5 switch, for each floor/3750 stack, both configured as etherchannel. We installled each 3750 stack/floor in different maintenance windows; in all these installations we have problems configuring the etherchannel. After we configure the etherchannel on 3750 stack and in the vss, the etherchannel does not go up/up. We see the etherchannel up/down; after a lot off work, try and error, configuring shut/ no shut, adding and excluding links from the etherchannel; in any aleatory moment the etherchannel goes up/up and works fine. Is there any bug related with these IOS versions, or is there any right procedure to configure etherchannel from vss to 3750 stack?
3750 stack config (IOS
Cisco IOS Software, C3750 Software (C3750-IPBASEK9-M), Version 12.2(50)SE1, RELEASE SOFTWARE (fc2))
interface GigabitEthernet1/0/1switchport trunk encapsulation dot1qswitchport trunk allowed vlan 100,101,371,372switchport mode trunkchannel-group 1 mode on!interface GigabitEthernet4/0/1switchport trunk encapsulation dot1qswitchport trunk allowed vlan 100,101,371,372switchport mode trunkchannel-group 1 mode on!interface Port-channel1switchport trunk encapsulation dot1qswitchport trunk allowed vlan 100,101,371,372switchport mode trunk
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Cisco Switching/Routing :: Configuration Of Etherchannel Between 3750 / 6506
Feb 17, 2013seeking for configuration assitance on etherchannel between catalyst 3750 and 6506
View 3 Replies View RelatedCisco Switching/Routing :: Setting Up Etherchannel Between 3750 And SG200
Jul 6, 2012I was configuring link aggregation between a Cisco3750 and Cisco SG200 and the switched network went down just a few minutes after the port channel came on.I rebooted the SG200 and all hosts came back up for a minute before I lost them again. The etherchannel was between two trunking ports. I never set link aggregation on the SG200, could that be the reason? All machines are connected to the SG200. The 3750 is only being used as a layer 3 device for inter vlan traffic.
View 1 Replies View RelatedCisco Switching/Routing :: 3750 - Losing Connection With Etherchannel
Jun 20, 2012We have a new building where we added 3 network closets with 3750x stacks.We have 2 fiber gig ports connected to 2 microwave units and etherchanneled the to ports
We have the same setup at the corporate office except the connection is 2 fiber gig ports on a 6509. The 6509 is doing the routing
Now the problem is that we lost the connection to the management interface on only one of the three closets after a few days running. But some workstations at the corp office could reach it... others could not. The workstation were on the same VLAN. We solved the problem for a few days by shutting on of the fiber ports on the etherchannel. But is started happening again... now with PCs being installed at the new location.
The PC that was not working on the 3750x side could ping across to the 6509 but no further then that. It seems like an arp issue not routing because some devices are reachable and fully operational throughout the network.
Here is the configuration:
3750x:Cisco IOS Software, Version 12.2(55)SE1
Current configuration : 118 bytes!interface Port-channel1switchport trunk encapsulation dot1qswitchport mode trunkno snmp trap link-statusend
!interface GigabitEthernet1/1/1description 2gig to STB-6509switchport trunk
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Cisco Switching/Routing :: Slow Throughput Between 3750 Etherchannel
Apr 23, 2013We've installed cisco devices accross our site in the last year or so and slowing getting on top of it now. How ever our old unmanaged kit seems to be out performing it. It's most like down to my misconfiguration which has lead me to here. Below is the details of hardware and configuration between devices. 3750 Core consisting of the following stacked. [code] I've got MRTG monitoring traffic and the throughput seems to max out 24m/s,
View 15 Replies View RelatedCisco Switching/Routing :: 3750 - EtherChannel Cross-Stack With EMC VNX
May 22, 2013We are configuring a new EMC VNX, and plan to use Ether channel with our 3750x stack. We would like to configure it for both additional bandwidth and for redundancy. What is the best configuration to use? Should we trunk the channel or use switch port mode access, and use channel-group on or protocol LACP (which state active or passive)?
View 1 Replies View RelatedCisco Switching/Routing :: 3750 / Link Usage Of Etherchannel?
Aug 5, 2012For etherchannel of 2 links on a 3750 switch, if 1 link ever gets saturated, will the other link be used as well if the excess traffic is part of the same flow?Or that excess traffic will simply be dropped?
View 4 Replies View RelatedCisco Switching/Routing :: 3750 - Etherchannel Across 2 L3 Switches To Stack
Mar 26, 2012I am wanting to etherchannel from a 3750 stack to core Layer 3 switches (also 3750) with a cable going to each core switch, I have put both core switches and the stack under a 28bit subnet mask, but I dont seem to be load balancing across both links.
View 5 Replies View RelatedCisco Switching/Routing :: Cross Stack EtherChannel From 3750 To 2960
Mar 25, 2013We have a pair of WS-C3750X-24T-S in a stack and four WS-C2960S-48TS-L in a stack of their own. There is not really anything too fancy configured (no special VLAN configuration/trunks or etc.) but the 3750 do have two ports configured as L3 for routing. We are not trying to use those ports for EtherChannel. These devices are running IOS 12.2(55)SE3 Essentially we are attempting to make an EtherChannel group using port 48 on all four of the 2960's in their stack (four ports). On the 3750 we will configure an EtherChannel group using port 23 and 24 on both switches (four ports). We then connect them up to form a four member EtherChannel.The ports on both ends are configured as mode ON and they are all 1Gb ports. I elected mode on because I understand at least one of the EtherChannel protocols will not work cross stack. What I would like to ask is whether the above configuration is possible or are we hitting some sort of limitation of EtherChannel cross stack, etc..? I cannot find anything to suggest this configration is invalid, but thought I would ask to see if I missed something in the EtherChannel articles.
View 3 Replies View RelatedCisco Switching/Routing :: 3750 / Stack Switch With Etherchannel Configuration
Dec 20, 2012I have stack of 2 switches 3750?I config etherchannel between them.
here is result
2 Po2(SD) LACP Fa1/0/15(I) Fa2/0/15(I)
Both ports are up up but standalone Int port channel 2 is down down.Need to know if this is default behaviour when we config etherchannel between stack switches?
Cisco Switching/Routing :: 3750 EtherChannel / Stacking In Core Layer
Nov 23, 2011As we know there are three layer in cisco Network Model:
-Core
-Distribution
-Access
So my question is in Core / Distribution layer should i use Etherchannel between switches or use Stacking if switches are stackble.For ex: suppose I have two cisco 3750 switches . so should i use etherchannel between them or use stacking in core layer?What are the advantages and disadv of both.
Cisco Switching/Routing :: Etherchannel - Redundant 6500 To 3750 Datacenter Switch?
Mar 27, 2012I have 2 6504's running HSRP as my core. They are each etherchannel'd to my Datacenter switch (3750 Stack) -- see image below.The problem i a having is with the etherchannel status:
Core1 PO11 status w (waiting)
Core2 PO11 status P(bundled)
DC11 PO48 status P -- but only to Core2 - the interfaces to Core1 are suspended. (See attached configuration documents) None of the devices have any information in the logs. I run this same configuration in my central location, but we are running Nexus 7000's. With the 6500's, do I need to split the port channels on the 3750 to allow them to negotiate the etherchannel? If I split the portchannels, are there any concerns? Should I expect to see the etherchannel status as P (Bundled) or H (Hot-Standby)?
Cisco Switching/Routing :: Cross-Stack 10-Gigabit EtherChannel On 3750E / 3750-X
Jan 28, 2012According to the following Cisco webpage, cross-stack 10-Gigabit EtherChannel is possible on the 3750 with up to two 10-Gigabit modules, using LACP: url...However, the webpage doesn't confirm if this functionality is restricted to a particular 3750 model, such as 3750E, or if it applies to all models. It also doesn't specify any particular IOS feature set. I've tried Cisco Software Advisor but it doesn't list this feature on either the 3750E or 3750-X. This is possible on the 2960-S switches (i.e. cross-stack 10gig EtherChannel)?
View 23 Replies View RelatedCisco Switching/Routing :: 2960S Stacks / 3750 - EtherChannel Group Numbers?
Jan 27, 2012I have a 3750 as core switch, adding 2 stacks of 2960S to connect. I want to establish etherchannel between the 3750 and each additonal 2960S stack, do the channel group numbers between the 3750 and the new 2960s have to match? 3750 has two channel-groups(1 and 2) already configured. Need to know, I would create 2 additional channel groups (number 3,4) for each of the etherchannels between the 3 2960S Stacks and 3750? OR channel-group # is local to the device.
View 5 Replies View RelatedCisco Switching/Routing :: Configuring EtherChannel Between 3750-X Cross-stack And 6509E Switch?
Mar 3, 2013configuring EtherChannel between 3750-X cross-stack and 6509E switch. I use two ports on 3750s, and two ports on 6509. I just need it as a trunk. For some elusive reason one port on 3750 keeps being err-disabled, and one on 6509 notconnected.
Here is what I did so far.
3750
!
interface GigabitEthernet1/0/22
description ***VSS-RNOC-link***
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2
[code]....
Problem with :
GigabitEthernet1/0/22 is down, line protocol is down (err-disabled)
GigabitEthernet2/1/29 is down, line protocol is down (notconnect)
I tried shutting them down, then no shutting them again. Didn't work.
Cisco Switching/Routing :: 3750 Stackable Switches Etherchannel To Core Switches
Nov 18, 2011If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
View 7 Replies View RelatedCisco Switching/Routing :: SW 3750 PoE Ports Are Not Delivering PoE
Sep 27, 2012I have a switch WS-C3750E-48PD, I had two cameras that use 15.4 W in these ports and two days ago these ports go down, now the ports don't deliver PoE but are good when connect a computer.
SWP-D302-1-1#show power inline
Module Available Used Remaining
(Watts) (Watts) (Watts)
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Cisco Switching/Routing :: Ip Mtu On 3750 / 3650x Ports
Jan 31, 2012I'm not able to set the mtu on an SVI or routed gigabit port on either model. they are running 12.2(55)SE4.
It comes back as "% ip mtu is not supported on this interface".
Also, is there any reason why when the "ip tcp adjust-mss", (set to lower than default) is applied to the egress SVI on a 3750 or 3560x, the mms value of the SYN packet is not adjusted when captured at the receiving end? It seems as if the setting does nothing.
Cisco Switching/Routing :: 3750 - Gigabit Ports Not Working
May 1, 2013I have two switches, WS-3750-24PS-S connected in two cabs via fiber. Patch panels at both ends with patch leads. Used tester to confirm end to end fiber connectivity. When plugged in, one switch lights up the other does nothing.
Ports are as follows:
interface GigabitEthernet1/0/2
switchport trunk encapsulation dot1q
switchport mode trunk
same at both ends. Tried both GI ports same result. swapped transceivers over and the same result, (one switch lit one not - the same switch in both cases). put both transceiver in each switch, (gi0/1-0/2 in a single switch). on the one that lights up in the original scenario we get link on both ports and they come up, on the other nothing happens. shut down both ports on the malfunctioning switch and no shut them, no change.
Show transceivers doesn't show transceivers on the malfunctioning switch, and no attempt is made to bring the ports up if the fiber is removed and replaced.
it is almost as though the two gb ports are kaput. Anything else I can try?
Cisco Switching/Routing :: 3750 Switches With All Optical Fiber Ports?
Feb 14, 2013We have a scenario where we want to connect 14 access layer 2950 switches to Core switch 3750 via optical fiber in a LAN.What model of 3750 Switch should we use to tackle this situation.I have learnt that WS-C3750X-24P should support it.Isnt it?
Can we use optical fiber SFP module to connect 2950 switches to core switch?Does Cisco 2950 Switch support optical fiber sfp module?
Cisco Switching/Routing :: In Catalyst 3750 Ports Are Getting Shutting Down Automatically
Jun 15, 2012in my production environment two swtiches with stack and all ports are in the same Vlan 2 192.168.117.254 and the default getway is 192.168.117.1install correctely all were working fine but from yesterday onwards some of the ports are getting down automatically and coming up automatically and all devices are having static IP's no dynamic. [code]
View 6 Replies View RelatedCisco Switching/Routing :: 3750 - Can Take (4) Ports From Each Switch In Stack And LACP Together
Jun 5, 2012I have a Cisco 3750G-48PS Running IOS 12.2(40) and was wondering how many physical ports are supported in an LACP Configuration. Is it 4 or 8 ports in a single switch.
If I have a dual 3750 stacked together, and I want to configure (8) port LACP, Can I take (4) ports from each switch in the stack and LACP together.
Cisco Switching/Routing :: Error Message Ports Flapping On 3750 Stack
Aug 27, 2012I am receiving the following error message on a Cisco 3750 switch stack. Need troubleshooting this error message.
00:03:13: %SW_MATM-4-MACFLAP_NOTIF: Host 00d0.7400.2730 in vlan 600 is flapping between port Gi2/0/3 and port Gi2/0/2
Cisco Switching/Routing :: 3750 Is There CLI For Viewing Switch Ports With No Activity In Last 60 Days
Oct 26, 2011I am working on a request to clean up alot of excess cabling in one of our IDF's. I noticed that many of the connections have no lights on them and probably haven't been used in a long while. I would like to know if there is a CLI command I can run on the Cisco 3750 switch will allow me to bring up a list of ports which have not seen any activity for a period of time - for example, 30, 60, or 90 days.
View 3 Replies View RelatedCisco Switching/Routing :: C3560 100mb Fiber Module?
Sep 4, 2012I have a c3560 switch that has two gig fiber modules in it. I need to uplink fiber to one of these at 100mb. This is because this port will be rate limited to 20mb and 10 percent is the lowest you can go with the rate limiting command. Is there a 100mb fiber module i can insert in the 3560
View 1 Replies View RelatedCisco Switching/Routing :: WS-C2960S-48TS-L / Reasons To Limit 1Gb Capable Switches To 100Mb?
Jul 8, 2012Our network administrator restricts all our new 1Gb switches to only 100Mb, to which he claims it will increase overall performance. Preventing devices from bottlenecking the network. (that is, only restricting the main switch ports, not the uplinks)For example we have a new building with 2x WS-C2960S-48TS-L connected together with FlexJack and then a 1Gb Fiber connection back to our core switch.
This building is on it's own subnet and there is little broadcast traffic. I don't see the point other than it hinders the potential speed we could use. Labs are set up in this building and 1Gb is MUCH faster when it comes to imaging and software deployment.
Cisco Switching/Routing :: How To Configure L3 Etherchannel 3845 ISR
Jun 9, 2013When I try to add an IP address to a port-channel interface on a 3845 ISR I am getting an error that seems to imply that only L2 etherchanneling is possible. Am I missing something?Cisco IOS Software, 3800 Software (C3845-ADVIPSERVICESK9-M), Version 12.4(24)T8,
sfo-c3845-1#sho run int port-channel 1
Building configuration...
Current configuration : 31 bytes
!
interface Port-channel1
end
[code].....
Cisco Switching/Routing :: Implement EtherChannel On 2901
Feb 3, 2013I am trying to implement an etherchannel on a cisco 2901 (IOS 15.1). i have already created the port-channel but i cannot assign the gig interface to the channel group.
View 1 Replies View RelatedCisco Switching/Routing :: 2950 - Etherchannel Doesn't Go Up
Jun 11, 2012I have a problem with an etherchannel between a cisco 2950 and a couple of catalyst 4506. The cisco 2950 is connect via an etherchannel to the catalyst 4506A. The channel consist of two port on both side and is in trunk mode, encapsulation dot1q.Now i have the necessity to connect the 2950 to the other catalyst, 4506B. So, i copy the same configuration on the 4506B, but when I unplug the two rj45 cables from the catalyst 4506A to plug them in the 4506B the etherchannel doesn't go up in any way.
View 8 Replies View RelatedCisco Switching/Routing :: 6509 Etherchannel Between Two Vtp Domain
Mar 25, 2013I have two switches 6509 one switch is confire with VTP domain ABC Other switch is configure with ABZ, At present the switch is configure with the L3 interface and one fiber cable is connected between two switches.I want to remove L3 configuration wants to make L2 etherchannel and wants to ceraeate Loop back will assing same ip both side.The OSPF is configure both side , i will not do any changes in the OSPF as L3 ip is advertise in OSPF.
View 1 Replies View RelatedCisco Switching/Routing :: 5508 Etherchannel To Nortel?
May 24, 2012If the ports on a 5508 can only perform etherchannel(no LACP or PAGP), only on mode, how does a 5508 create a bundle with a nortel switch?
View 1 Replies View RelatedCisco Switching/Routing :: EtherChannel - Configuring On 4500?
Feb 28, 2012I am about to configure 4 Gig ports for EtherChannel. I've been reading about EtherChannel and it seems easy enough to configure. I have a host (server)which I am going to connect to these 4 - gig ports. This is new for me and would like some feedback for those that have used EtherChannel on their layer 2 switches. The gig ports will be an access port with VLAN XX.
View 6 Replies View Related
