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 WAN :: 3560 Way To Find Out Which Protocol Traffic Flowing Through Interface

Oct 4, 2011

We have 3560 switch with following IOS. version 12.2(55)SE3   and image name is  C3560-IPSERVICESK9-M. On one of the interface we need to know what are traffic is flowing.
 
Do we have "ip nbar or ip route-cache" support on this switch IOS? Is there any other way to find out which protocol traffic is flowing through that interface.

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Cisco Switching/Routing :: 2911 Multicast Traffic Stops Flowing?

May 7, 2012

I have configured multicast(ip pim dense-mode) on two 2911 that are connected by a Multilink( 3 Mbps)  Wan connection.The configuration works fine for awhile and sometimes all day but at some point one of the Multilink interfaces stops passing multicast traffic.I perform a SH Multilink 1 on the interfaces and one show multicast packets incrementing and one does not, it just stops.The problem acts like there is a buffer that gets full and after that happens it just stops working.

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Cisco Switching/Routing :: Rate Limit Traffic In 3560

Oct 20, 2011

I am using Cisco 3560 as distrubution switch and want to limit port 445 traffic on 1 MB and applied rate limit statment on Gi0/1 port but switch unable to limit said traffic.rate-limit output access-group 120 1024000 128000 128000 conform-action transmit exceed-action drop.

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Cisco Switching/Routing :: 3560 Redirect Internet Traffic

Nov 24, 2011

At one of my field offices I want to redirect internet traffic down a separate DSL connection instead of having it ride the T1 back to the main office then going out.  At this office I have a 2600 router, 3560 switch, with a Fortigate firewall in between DSL connection and LAN, Fa0/0 on router and firewall are both plugged in to switch.  I have seen posts that mention PBR or static routes which is the reccomended method for dealing with this? 

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Cisco Switching/Routing :: Limiting Traffic Rates On 3560 Switchports

Jul 19, 2012

I have a 3560 switch where I have 4 ports connected, one is to our WAN provider - 10Mbps and the other three are connected to different customers who I want to get an equal share of the 10Mbps bandwidth.I'm fairly clued up about configuring modular QoS but I'm being thrown by the fact that you can't apply a service-policy outbound on the ethernet ports.

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Cisco Switching/Routing :: How To Limit Broadcast Traffic On 3560 Switch Port

Dec 17, 2012

How do I limit broadcast/mulitcast traffic on a switchport to e.g. 5000 pps ? I don't want the port to shut down, just block or drop broadcast traffic that exceeds 5000 pps.

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Cisco Switching/Routing :: 3560 - Traffic Only Can Achieve Half Of Limit Bandwidth

Jul 15, 2009

I use WS-C3560G-24TS and try both ios 12.2.50.SE1 and 12.2.46.SE but problem the same. The config as following,
interface GigabitEthernet0/1
no switchport
ip address 1.1.1.2 255.255.255.0
[code].....
 
but I find the int g0/1 output traffic only can achieve about 500kbps then I try config below,

interface GigabitEthernet0/1
no switchport
[code]....
 
I find int g0/1 output traffic only can achieve about 5Mbps,but if I change "srr-queue bandwidth limit xx" command xx to 20-90,the int g0/1 can achieve normal traffic bps, for example,

interface GigabitEthernet0/1
no switchport
[code]...
 
the int g0/1 output can achieve 2Mbps that is correct,just only when limit set to 10%,the traffic only can achieve half of limit bandwidth.

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Cisco Switching/Routing :: 3560 - Configuring Qos / Traffic To Go Into High Priority Queue

Nov 19, 2012

i have a 3560 connecting to a sp with limited bandwidth. i have one interface on the switch whose traffic i do not want to drop. i want this traffic to go into the high priority queue. i am not sure how this should be configured, but here is my best guess and my current qos configuration on the switch:
 
qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 4 6 7
mls qos srr-queue output cos-map queue 2 threshold 2 3(code)
 
since cos 5 is mapped to dscp 46 then this traffic would go into the priority queue. is this correct ?

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Cisco VPN :: 1841 - L2L Is Up But No Traffic Flowing

Jun 7, 2011

im attempting to setup a L2L VPN between an 1841 and an NSA 2400, via the SDM.The Tunnel comes up, and when I test connectivity it shows as being successful, but I do get an error stating:-
 
"A ping with data size of this VPN interface MTU size and 'Do not  Fragment' bit set to the other end VPN device is failing. This may  happen if there is a lesser MTU network which drops the 'Do not  fragment' packets."
 
From my reading this shouldnt cause all traffic to drop though, right?
 
Currently I cannot ping or telnet to services from one end of the tunnel to the other. I was able to ping momentarily from the Sonicwall end at one point, but this disappeared shortly afterwards (without my changing anything regarding the config).
 
All of the ACLs created were populated through the SDM.

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Cisco Switching/Routing :: 6500 / 3560 - Get L2 Traffic Amount (bit / Byte) Passing Through Switch

May 30, 2012

We want to get L2 traffic amount (bit/byte) passing through a cisco switch (6500/3560 ...) for a specific VLAN. it can be via SNMP or CLI ...How can we do that?
 
note: there is no L3 interface on swtiches.

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Cisco Switching/Routing :: 3560 - HSRP Setup / S2 Active And Route Traffic From Internet To Client?

Jan 14, 2012

i have a strange issue with an HSRP Setup. I  have two (S1+S2) 3560 as Core/Distribution Layer. Inter-vlan routing are  enabled on both Switches. S1 and S2 are connected with an ether channel  over four fibre ports. S3 -S5 are the (L2) access layer.
 
Gi0/1 on S1 and S2 are L3 ports, connect to a Linux Firewall.

HSRP is enabled, S1 is the active router and the STP root bridge.
 
But, my monitoring via cacti show me, that the Gi0/1 on S2 is active, too! But it should not be active? Only if S1 fails, should S2 the active switch.A client from the access ports on S3 - 5 gets traffic from the Internet via Gi0/1 from S2. Gi0/1 on S1 is active too, but will send mostly traffic to the Internet. Why is S2 active and why route it traffic from the Internet to the client?

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Cisco Firewall :: ASA 5510 With 8.4.1 - Traffic Is Not Flowing

Mar 27, 2011

I'm currently using ASA 5510 with software 8.4.1 and I have an issue with nat configuration. I used the following config line:nat (inside, dmz) source dynamic LAN Pat1 destination Server1 Server1
 
The traffic is not flowing and when I use Packet Tracer, packets are dropped at the NAT rule with the following error: Drop-reason: (acl-drop) Flow is denied by configured rule.The only ACE I have is permit ip any any.

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Cisco Firewall :: ASA 5510 No Traffic Flowing?

Jul 12, 2011

I have manually configured the Firewall ASA 5510 from existing PIX to match the configuration, however when I connect the firewall to the Network, no traffic is flowing in either direction. I have the Inside network on the 172.29.0.0 subnet and the outside network on 20.2.0.0 subnet. I am attaching the cofiguration file.

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Cisco WAN :: 3900 Router - Traffic Not Flowing

Jun 13, 2013

i have a gateway router going to the internet....using public IP addresses on both interfaces. starting on Monday, traffic would suddenly stop flowing from the inside of the network going out, though i can still ping the outside interface  , but when I log in to the router I am able to ping to the internet. so its like traffic is not passing from the outside int to the inside int. I have a 3900 router. other thing is, when i restart the router it will work for some time and then just stop again....

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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 Firewall :: Can't Get Traffic Flowing Between VLANs On ASA 5505

Aug 20, 2012

I've got an ASA 5505 with the Security Plus license that I'm trying to configure.

So far I have setup NATing on two VLANs, one called 16jda (VLAN 16 - 10.16.2.0/24) and one called 16jdc (VLAN 11 - 10.105.11.0/24).

From each subnet I am able to connect to the internet, but I need these subnets to also be able to talk to each other.

I have each VLAN interface at security level 100 and enabled "same-security-traffic permit inter-interface", and I have setup static NAT mappings between the two subnets, but they still can't communicate.

When I try to ping there is no reply and the only log message is: 6     Aug 21 2012     09:00:54     302020     10.16.2.10     23336     10.105.11.6     0     Built inbound ICMP connection for faddr 10.16.2.10/23336 gaddr 10.105.11.6/0 laddr 10.105.11.6/0

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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 :: 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 :: 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 WAN :: 1841 - IP / Assign Routers To Test Pinging And Getting Traffic Flowing?

Jun 3, 2013

I have two 1841's, setting up a Lab WAN in Packet Tracer. I have one of the 1841's run to a DSL modem, then out to the cloud and the same setup on the other end... from the cloud to the DSL modem and to the 1841 on that end... I have all green lights, so that tells me layer 2 is up, but I'm trying to figure out

what IP to assign the routers to test pinging and getting traffic flowing. but the DSL Modem's have the public IP's and dynamically assign an IP to the routers? I've also tried setting up a static IP on the routers fa0/0 interfaces and the pings fail.. Wondering what I am missing to get these two talking.

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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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