Cisco Switching/Routing :: 2x6509-E VSS With Aggregation 3560 Switches

Sep 5, 2012

whether VSS technology support on 3560 switches.I'm planning to intergrate new Cisco 2x6509 with VSS and all the access swtiches 3560's uplink to core 6509..if not support, what will be the solution or any bug fixing or new IOS releasing

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Cisco Switching/Routing :: Pair Of N7K Distribution Switches Connected To A Pair Of Aggregation Switches

Mar 11, 2012

We have a pair of N7K distribution switches connected to a pair of N7K Aggregation switches.We run vPC on both pairs of n7k's.

-n7k-d1 has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC1)
-n7k-d2 also has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC2)
 
My problem is that Spanning-Tree is blocking PC2 and all traffic from n7k-d2 is traversing the Peer-Link before reaching the Aggregation layer. Is this the best design for connecting two pairs of n7k's with vPC or if a better design would be to connect all 4 links into the same Port-Channel and vPC?

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Cisco Switching/Routing :: 3560 - Have EtherChannel Across 2 Switches?

Dec 6, 2011

Is it possible to have ether-channel across 2 switches? As an example, having a server with 2 ports connect, 1 port to Switch-A and the other to Switch-B and then use those two links on the sepatate switches but to the same server to form an Etherchannel.
 
The Switch-A and Switch-B are 3560 series

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Cisco Switching/Routing :: 3560 Switches Hang Off With Sub Interface

Jul 22, 2012

Was building a small network in Cisco Packet Tracer and ran in to an issue.  I have 4 routers running OSPF, and off one of the routers I have 5 3560 Multilayer switches.  The router that the switches hang off of, I have a sub-interface with dot1q encapsulation, set for vlan 10 and an IP Address. 10.14.16.1/24.  The switches have interface vlan 10 configures, and have IPs in the same subnet.  From that router, I can ping/telnet to all the switches without issue.  My problem arises when I try and reach those switches from any other router.  OSPF is set to redistribute static and connected subnets.The routing table is populated correctly on all the routers.  When I ping and trace the packet, it looks like it makes it all the way to the respective switch, but the packet never makes it back.  I've played with the default route on the switches to no avail.  Am I trying to implement this incorrectly, or am I just missing something?

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Cisco Switching/Routing :: Block Appletalk On 3560 Switches

Sep 9, 2012

In cisco documentation for the 3560 it is mentioned that blocking appletalk will not work .It shows up in command line but it is not working due to hardware limitation.Is there any other way to block appletalk on 3560 swiitches.

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Cisco Switching/Routing :: RSPAN On Switches 3560 And 4500

Apr 24, 2012

I have a question about RSPAN, is this feature only supported on 6500 and 4500 switchs?
 
we have 2 3560 switches and want to use RSPAN to monitor different source ports.I checked thorugh the cisco feature navigator and the IOS we have on 3560 has the RSPAN fature listed in them.

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Cisco Switching/Routing :: 3560-C Series L3 Switches Support OSPF?

Jul 16, 2012

OSPF normally only comes with IPservices image and not IP Base image. The 3560-C series data sheet says that it only suport IP Base image, yet it mentions that support for OSPF in included. Are there any restictions in the OSPF support?.

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Cisco Switching/Routing :: 3560 Least Amount Of Downtime For Downstream Switches

Sep 3, 2012

I have a 5K with 5 downstream 3560's. I now have a new 5k that I would like to add to the existing 5K as a HA peer. What is the best way to accomplish this with the least amount of downtime for the downstream switches.On the 3560's, i plan setting up port-channels once HA is setup on the 5k's.

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Cisco Switching/Routing :: 3560 Multiple Switches One Trunk Port

Sep 21, 2012

We have 7 3560's in 7 different locations connected to our providor for wan access.  Our provider has given us a copper cable at each point and we have connected it directly to our 3560 switch at each location.  Each port is configured the same way at each location.  Each switch is running eigrp.All of the switch ports on each switch are configured as a trunk and vlan 299 had the ip address for the eigrp connection: [code] This setup is working as each switch see's all of the other switches as an eigrp neighbor.  We have also made sure that the switch at our head office has spanning tree priority for vlan 299.
 
So the problem is, if there is a change in the topology at one of the locations it usually causes one or more of the other connections to go down for some reason.  We just cannot pinpoint what is causing this change.  There are no log's or anything other than an eigrp hold time expired message.?

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Cisco Switching/Routing :: Catalyst 3560 / 3750 - Can Ping PC From Switches But Not From PC

Feb 19, 2013

We have a couple of Cisco switches and connected a (Windows 7) laptop to one of them and it gets its IP address from a DHCP server.I can now ping the IP from all of the switches, no problem, also not when I log on to the core switch in the same VLAN as both notebooks. But from my (Windows 7) laptop, which is in the same VLAN as the target laptop, I cannot ping it.
 
I checked, default gateway is good on both sides, as are DNS servers.
 
Target notebook ---- Catalyst 3560 V2 switch === Core Catalyst 3750 switch (stack) === Catalyst 3560G switch --- My notebook

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Cisco Switching/Routing :: 3550 / 3560 - Can Multiple Connection Between 2 Switches

Jul 9, 2012

For some special arrangement, I would like to connect 2 access ports from a 3550 switch to 3560 switch.1 port for vlan 200, another port for vlan 201.Will this introduce bad thing to the switches?

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Cisco Switching/Routing :: 3560 / Nortel 1612G - Compatibility Between Two Switches

Sep 12, 2012

I have a Cisco 3560 connected via fiber to a Nortel 1612G.  The connection is up/up, the V LAN's on the switch work as needed, but I can not ping the switch from the Nortel, and as a result I can not remote into the Cisco for management.  I see in the configuration for the trunk that it is configured for a native v LAN, but I don't see it defined which v LAN's are allowed, could this be the issue?  I will provide some of the config information for the Cisco side, I understand the issue may be on the Nortel end but if the Cisco part looks OK? 

Port config for the trunk:
 
interface GigabitEthernet0/49
description port_6_1612G
switch port trunk encapsulation dot1q
switch port trunk native v LAN 120
switch port mode trunk
                  
Native v LAN config:
 
interface Vlan120ip address 172.16.120.11 255.255.255.128

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Cisco Switching/Routing :: 3560 PoE Blocking Ports In Trunking Between Switches

Apr 25, 2012

I have a connection between switches, There are a 3560 (Gi0/37) and a 2960 (Gi0/1), the  problem is in the port Gi0/37 of the 3560 switch and this is the log. [code]
 
I dont understand what is the problem, actually i have added the command power inline never on the port and the problem is solved, but we haven´t changed configuration.

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Cisco Switching/Routing :: 3560 - Vlan Trunking Between Switches Not Working

Jun 3, 2012

We have two Cisco switches with one 3560 and one 3750 we have created a new Vlan 4 with IP 10.1.3.x 255.255.255.0 - no shut then assigne to gi 2/0/46 on the 3560 Vlan 4 ip address 10.1.3.x 255.255.255.0 no shut then assign to FA0/45. All interfaces are up up along with the Vlan up up, we can ping the local IP address bu not able to pint the other switch.

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Cisco Switching/Routing :: Air-Print / Bonjour Traffic Not Flowing On 3560 Switches

Jan 16, 2013

We are in the process of rolling out iPads to our offices.  As part of this implementation, we need to print from the iPads to our network printers.  Our network printers are mostly HP and Xerox and do not have native Apple AirPrint capabilities.  As such, we have been using the FingerPrint software to share out the network printers as Apple AirPrint printers.  We have a mixture of switches at our offices.  Most offices utilize a 3550 PoE switch.  In these offices the AirPrint traffic is being transferred successfully and everything works great. In the offices which are using 3560 PoE switches, the traffic is never seen at the iPads.  We are using EnGenius EAP300 access points connected into the Cisco switches to provide wireless access to the iPads. Both 3550 and 3560 switches are running iOS 12.2(25). What might be stopping/blocking the AirPrint traffic on the 3560 switches?

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Cisco Switching/Routing :: 3560 Switches Stuck In Initializing Flash Loop

Nov 7, 2012

I have a couple of 3560 switches running c3560-advipservicesk9-mz.122-44 and they are randomly experiencing the following:

- The switch locks up with no preceding error message in the log (I am forwarding syslog to Splunk).

- Upon reboot, the switch goes through the normal startup sequence with no error messages, then for some reason reloads the flash and starts all over again. (refer to doc)

This could happen after days or weeks.  Sometimes they will go through two of these reloads on boot and be fine for awhile, and other times they will be stuck in the loop infinitely.  I am using this same image with all of our 3560s, but am only having this issue with two of them.

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Cisco Switching/Routing :: 3560 - No Access List On Switches And No Firewall Between Sites

Jul 15, 2012

I have 3 3560 switches which are configured with trunks between them. They run vlan 10, 11 & 12. I have a 'core' switch (switch 1) of these 3 to which an MPLS router is connected on vlan12. I in addition have another switch hanging off the 'core' switch via a routed link (switch 4). I have EIGRP configured as a stub and as such the IP address on the routed link at the core switch end is of a /24 from v lan 1 on the other switch. This makes the route directly connected and therefore distributed via EIGRP stubs. Switch 1 is then exchanging routes with the MPLS router (via EIGRP).
 
The problem I have is that from any sub net on any switch (switch 1, 2 or 3) I can ping 192.168.13.1 (switch 4). When I try and ping switch 4 from over the MPLS I am unable to. If I trace to the switch I see it reaches the outside of the MPLS router, but is then unresponsive. The same applies if I try to ping switch 1 on 192.168.13.2. Any of the other IP addresses of switch 1 respond.
 
The MPLS network is a managed solution to which I have no access. I'm told that the MPLS provider is able to ping switch 1 & switch 4 on the 192.168.13.x addresses from a remote router (192.168.32.2). I have tried from a switch on the same L2 sub net (192.168.32.1) and I don't get a response.
 
From switch 4 I am able to ping the switch on 1 of it's interfaces (192.168.19.1), but not the interface I mentioned above 192.168.32.1. There are no access lists in place on the switches and no firewalls between the sites.

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Cisco Switching/Routing :: 3560 - Switches Capable Of 10GB Port Density

Feb 5, 2013

I have 3560's in my current environment, operating in the core/distro/access layers. The switches are in a star configuration, performs only layer 2 switching, and utilizes copper (no plans on moving to fiber).
 
With a fairly limited budget, I've been contemplating on upgrading the central node to a stacked 3750X to eliminate that single point of failure, and trunk the rest of the 3560's to the stacked switch. I wanted to be sure that the 3750X switches will be right for my environment (90-100 hosts), and if what I explained above is a good solution.
 
I'm also looking like to upgrade 6-7 of my servers (and SAN) with 10GB network cards. Do the ports on the 3750X have port densities capable of 10GB? If not, what switches provide that capability?

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Cisco Switching/Routing :: 3560 - 802.1x Multi-auth Mode And Downstream Switches

Feb 20, 2013

I need to support a bunch of security cameras mounted on poles in our parking lot and an IP intercom system mounted on some gates. Because of environmental factors the switches at the poles need to be hardened and the spec from the vendor installing the gear is for GarretCom Industrial unmanaged switches which would make sense.
 
However when Information Security got wind of this scheme they (probably correctly) are requiring me to secure the ports that these unmanaged switches connect to. I have 2 choices: port security w/ MAC filtering or 802.1x. Because all the devices at the poles and gates support 802.1x and because I may need to go out there to troubleshoot stuff (and will invariably forget to add the MAC of whatever device I am using) I would prefer 802.1X multi-auth mode.
 
Problem:
When I ran a quick test on a test 3560 running some 15.0.1 code I could get a laptop to connect via 802.1x EAP-TLS successfully if it was directly connected but when I connected the same laptop via a dumb Netgear switch I confiscated from a luser  it would not connect. The 3560 error said that the laptop never responded.
 
Question:
Before I spend a whole lot of time on this, is this something that should work? I don't see any practical use for the feature if it won't however the documentation I am using specifically mentions downstream hubs but I am not sure if they mean real hubs (which I don't think are even made anymore) or if they mean unmanaged switches.
 
I plan to try a couple of different unmanaged switches tomorrow and digg a little but I would like to know if I am wasting my time on something that will never work or if there is a little gotcha somewhere.

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Cisco Switching/Routing :: Does SA520w Support Link Aggregation

Sep 16, 2012

if my SA520w will support link aggregation for network devices within my LAN. If so, is there a Cisco wiki or how-to on how to setup this up in the SA520w? I only find a brief mention of this in Section D of the manaul.

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Cisco Switching/Routing :: 2960 - Link Aggregation With Different Technologies?

Jan 8, 2012

I have two 2960 switches connected with two links. One of them is transparent modem connection with 2Mbps limit, and the other is optical link with media convertos on both sides. Is there a way to set up etherchannel, LACP or any other kind of link transparent to switches or I have to use some sort of STP?

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Cisco Switching/Routing :: 3560 - Portable Redundant Power System For Catalyst Switches?

May 10, 2012

Does a portable RPS device either from Cisco or another manufacturer exists, that would allow you to move primary power for a switch without causing an outage? I realize that for the Catalyst 3560 for example, you can get an RPS 2300 or 675, but my understanding is that these are made for a more permanent installation, not to mention rather costly.
 
It looks like the RPS 675 is rather inexpensive after all, especially in the secondary market, but still rather large for toting around.

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Cisco Switching/Routing :: 887VA Using Dual Ethernet Ports For Aggregation

Jun 6, 2013

We are running a Cisco 887VA router for our internet access but of course the port connected to the internal network only supports 100Mbit/s. There are a few 100Mbit/s ports on the router; I was wondering whether it was possible to use more than one port to provide aggregation to get higher speed such as two ports providing 200Mbit/s?  We are running Gigabit internal.

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Cisco Switching/Routing :: SG500X-24 / Link Aggregation On Switch And Controller?

Nov 4, 2012

I have two workstations running 7 Pro, each has a quad port intel card (PCIe) which I have created teams for on both sides using link aggregation. On my switch, a Cisco SG500X-24, I set up two LAG's with 4-ports each and have both servers connected as necessary. I turned on Jumbo frames and disabled energy saving. The teams were set up without LACP turned on, however I tried it with LACP and I also ran into the same problem. Both workstations have a 26TB arrays running in RAID 6 (so plenty of read/write speed), however, with this setup, I can only get about 100MB/s (single port speed) and multiple data streams cause the speed to divide. Only single ports blink on the cards as well.
 
Questions 1 is probably a no-brainer, but it's my first time setting this up, but once this is working properly, would it allow a single file to transfer at ~400MB/s or would I need to start multiple datastreams to take advantage of link aggregation.
 
Question 2 is what do I need to change to make the link aggregation work?
 
I do have a little linksys router plugged into a non aggregated port to do DHCP but that wouldn't mess anything up, would it? Considering I can unplug it once everything is talking, all the transfer should take place at the switch level, correct?

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Cisco Switching/Routing :: 2950 / 3560 / Chart To Show What Modules Will Fit What Switches For Fiber Applications

Dec 12, 2011

Is there a chart to show what modules will fit what swithches for fiber applications ex 2950 and 3560 switches

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Cisco Switching/Routing :: Output Queue Drops On 3750 Core Stack And 3560 Edge Switches

Jan 10, 2013

I've been fighting what seems to be an increased number of outqueue drops on our core stack and edge switches for the last 3 or 4 weeks.(The core consists of a stack of 5 3750s in 32-gig stack mode. The wkgrp switches are 3560s. all are at 12.2.52) The  wkgrp switches are directly connected to users. We use Nortel IP phones with the phone inline with the user PC. auto-neg to 100/full. [code] However I have tried turning off QOS on a couple of workgroup switches (no mls qos, but left individual port configurations the same) but am still seeing drops.Since I have disabled qos on the switches in question (no mls qos)  (not the core tho) I am presuming these commands have no affect on the switch operation and therefore cannot be related to the problem. With QOS turned off one would presume that it is general congestion - especially at the user edge where busy PC issues might contribute. So I wanted to see if I could see any instances of packets in the output queues building up.
 
 I wrote some scripts and macros that essentially did a snapshot of 'show int' every 20 seconds or so, and looked for instances of 'Queue: x/' where x was greater than zero.What I found after several days of watching the core stack, and a few of the workgroup switches that are most often displaying the behavior, was that I NEVER saw ANY packets in output queues. I often saw packets in Input queues for VLAN1, once in a great while I would see packets on input queues for fa or Gi interfaces, but NEVER on output queues. [ code] Additionally, when I look (via snmp) at interface utilization on interfaces showing queue drops (both core and wkgroup), they are occurring at ridiculously low utilization levels (as low as 4 to 8%). I've tried to look for microbursts between the core and a wkgroup switch where the core interface was experiencing drops, but haven't seen any (using observer suite). [code] While the queue-drop counts aren't critically high at this point, they are happening more frequently than in the past and I would like to understand what is going on... In most cases, no error counters are incrementing for these interfaces. Is there some mechanism besides congestion that could cause output queue drops?

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Cisco Switches :: Link Aggregation On SG 200-26

Mar 5, 2012

I'm trying to setup Link Aggregation on this switch for an HP server with a 4-port NIC which is teamed.  I create the LAG and see in the HP Network Utility where each port in the team disconnects then reconnects and the server has internet access, but workstations cannot access the server (can't browse UNC, RDP, ping, etc.) and vice versa.  This is the only switch at the site, all the workstations are plugged into it.  Rebooting the switch after creating the group didn't have any effect.

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Cisco Switches :: SG300 Link Aggregation And Wake On Lan?

Aug 21, 2011

Having issues waking NAS devices using a magic packet when using link aggregation on an SG300-28 switch.
 
Without link aggregation everything works fine so I know the magic packet is being generated correctly and the NAS device is correctly configured to wake. After configuring link aggregation the device does not wake. Have tried dynamic (LACP) and static link aggregation but neither allowed the device to wake? When the NAS is powered off, the ports in the LAG still show as being connected at 100M but it appears the magic packet is not being transmitted.

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Cisco Switches :: SG200-18 Link Aggregation Setup

Jun 22, 2012

I have a Synology 1512+ and trying to setup Link Aggregation but no success. I have configured LAG Management with LACP enable or disable but still failed.
 
At the Synology 1512+ setting page, there are 2 options: IEEE 802.3ad Dynamic Link Aggregation and Network Fault Tolerance (Non-802.3ad network enirovement), I selected IEEE802.3ad, which i think S200-18 should be able to support. right?

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Cisco Switching/Routing :: 3560 / Jumbo Frames And Connecting Non-jumbo Switches

Jun 11, 2012

I currently have 4 3560 switches connected in a Mesh topology. These are all set to use Jumbo Frames and so are all the Servers that are connected to these.I now need to connect a 2950 switch to 2 of the 3560's which will have only desktop computers connected to it but i do not want to configure Jumbo Frames on this and any of the desktops.

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Cisco Switches :: SGE2010 Stacking Versus Link Aggregation?

Aug 14, 2011

answer regarding stacking the SGE2010 switches versus link aggregation if greater than 1 Gb connectivity is required between individual switches? Currently have several switches in a stack configuration but would like to increase the bandwidth between some or all of the switches. Does stacking support a link aggregation configuration? If so what ports can be used and how should the link aggregation be configured in conjunction with the stacking?

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Cisco LAN :: 3560 Switches - Static IP Routing

Oct 17, 2012

I have been looking at deploying a small core switch design for an important branch office that would consist of 2 cores with an etherchannel link and then 4 POE access switches linked to both cores utilising STP. I will also want static IP routing on the cores and will set up HSRP for gateway failover.
 
The initial switch I looked at for the core was WS-C3560E-24TD-S however after finding that there is no stock around of this at the moment I have seen the WS-C3560X-24T-S which looks like it will do everything I need including IP routing, HSRP and QoS for VOIP. The thing that concerns me is this is about £1000 cheaper so i'm slightly worried im missing someting.

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Cisco WAN :: WAN Routing Between N5K (L3-vPC) And VSS (MEC) With Link Aggregation

Feb 16, 2012

We want a solution for routing between N5K and VSS with aggregated WAN links.
 
DC1: It has 2 cisco 6509 with VSS. There are 4 server farm cisco4948 switches connected with VSS with redundant uplink via MEC. Server gateway is the VSS. VSS is running Eigrp routing.
 
DC2: This is a new datacenter we are going to establish soon. We are planning 2 N5K at core layer with L3 daughter card and 4 N2K as server farm switch. 2 N5K will have vPC peer between them. Each 4 N2K will connect with redundant uplink via vPC with this N5K. N5K will run Eigrp routing and will be the gateway of this new DC server.
 
WAN between DC1 & DC2: DC1 VSS will connect with DC 2XN5K with 2X10G links. we want to do MEC at VSS side and L3 vPC at DC2 side. If we have VSS at both end it might not be a problem. Both the link will work together as 20G aggregated link. But as we are using N5K at one end, so it creates a confusion whether it will work properly is this scenerio or not.Also I would like to know,

1) In VSS I have configured 1 VLAN interface for server gateway. But in N5K do I have to configure at 2 switch seperately?

2) In WAN routing VSS shows as 1 device. Does this 2 N5K will show as 2 seperate hops or L3 vPC will allow them to act as a single device while traceroute from one end to another end.

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