Cisco Switching/Routing :: 3550 - Export Mac Address From Switch To Local Machine?

Jan 8, 2013

I am working on Cisco 3550 switch on a certain requirement. I have got an access point connected to the switch and few mobile phones connected to the access point. I get the list of mac addresses connected to the switch ( Both access point's mac address & the clients addresses) by "show mac-address table dynamic" command. However, i am unable/confused to get the output of the following scenarios:
 
1. I would require to export the mac address from the switch to the local machine in any format (May be by using an SNMP tool, if available) so that the same needs to be used in my C# for development.What would be the way for the same ?
 
2. The mac address in the mac address table doesn't get updated dynamically. (Eg Scenario: A wifi client gets connected to an access point which inturn is connected to the switch, the mac address of the client shows up in the switch table. However if the client is disconnected, the client's mac address would still be displayed in the switch table )

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Cisco Switching/Routing :: How To Block Single Mac Address In 3550 Switch

Nov 16, 2011

I need to block this mac address in  my 3550 switch.i enable port security but this mac address comes and do the violation and port is shut down.

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Cisco Switching/Routing :: Does WS-C3560X-24P-S Switch Supports Ip Flow Export

Jan 19, 2012

Does the Cisco WS-C3560X-24P-S switch supports ip flow export?

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Cisco Switching/Routing :: 2911 - Local Machine Names Won't Work

Aug 3, 2012

I have a 2911 router inside our network with both DHCP and DNS enabled. Everything works fine except since we use this router we are not being able to go to the network neighbourhood in Windows and look up machines by name (or typing \diskstation for example). Connecting by IP works fine but not by local machine names.

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Cisco Switching/Routing :: 3550 / Layer 3 Switch Not Routing?

Apr 26, 2012

I have a 3550 l3 switch configured as follows:

vlan 10 ports 1-10
vlan 21 ports 11-20
vlan 30 port 21-30
vlan 40 ports 31-40
default vlan should be vlan 21

I have the servers, switch and router connected to vlan 21.  Vlan 21 works great I can browse the internet, but I cannot ping any other vlans. router is connected to fa0/19
 
[code]
Building configuration... 
Current configuration : 4833 bytes
 !
 version 12.2
 no service pad

[code]....

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Cisco Switching/Routing :: VLan Routing Same Switch 3550-12T?

Mar 10, 2013

I'm having some problems setting up vlans to talk to each other on a 3550-12T switch. Its quite a simple setup I have, but I need to split my network up.
 
Currently I have a network of 192.168.25.0 255.255.255.0 I want to create a new vlan network of 192.168.30.0 255.255.255.0 So I have configured my vlan1 (default vlan) to have an ip of 192.168.25.250 for getting to the management page
 
I have created a vlan2 of 192.168.30.1 255.255.255.0 ?I have a port 10 linked to one of my 3560G's?In port 9 which is on vlan2 I have my pc plugged in with a static ip of 192.168.30.50 from the router I can ping any device on 192.168.25.x.
 
I can not ping 192.168.30.1 (which is my vlan2) nor can i ping the PC.
 
I have enabled ip routing  But I dont have a default route, this is becase we don't have a router on the network.

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Cisco Switching/Routing :: GLC-GE-100FX - Connection To 3550 Switch Over MMF

May 21, 2012

i have an OM1 MMF fiber run between two switches, the first being a 3750 and the second being a 3550.
 
The link currently exceeds the maximum distance for OM1 @ 1000Mb/s (220m) so i would like to downgrade the link to 100FX using the necessary SFP's/GBIC's to extend the maximum distance to 550m and run the link @ 100Mb/s.
 
I have the part code for the 100FX SFP to install in the 3750 (GLC-GE-100FX) but cant find a 100FX GBIC for the 3550, can I use a 1000SX GBIC (WS-G5484) for the 3550 at one end and the 100FX SFP at the other? Any success with this configuration over MMF?

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Cisco Switching/Routing :: 3550 Upgrade To Gigabit Switch

Jun 4, 2013

I have a 3550 switch right now, and need to upgrade to a gigabit switch, so I'm looking at a 3560G-48.  For some reason I purchased an EMI version of my 3550, but run the ipbase image...what I need to look for - is a 3560G-48-s good for what I need?

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Cisco Switching/Routing :: Port Unreachable Messages On 3550 Switch?

Jan 24, 2012

While working at a client site today, I was troubleshooting some ICMP connectivity for a network we have created.I turned on 'debug ip icmp" on the 3550 switch int he middle, and was inundated with the following debug output:
 
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5

[code]....
 
This output fires several times a second, and based on how often it is firing, I am curious if it may be a culprit with respect to the fact that the client has indicated that they have some slow internet.Should the next step be to look at the workstation at 172.16.1.5? 

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Cisco Switching/Routing :: Route-map Command Support On Switch 3550?

Sep 30, 2012

I have cisco switch 3550 IOS Version 12.1(19)EA1c.   
 
I can configure route-map commands on that.  but i can not apply that into any vlan interface.   while i try to apply the following command ( ip policy route-map PBR) on VLAN int i get an error msg saying that the command is not recognized.

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Cisco Switching/Routing :: Have HSRP Or GLBP Between Two Different Switch Like 3550 And 3560?

Dec 9, 2012

Can i have HSRP or GLBP between two different switch like 3550 and 3560?

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Cisco Switching/Routing :: Catalyst 3550 Switch - Dynamic QoS Setup

Mar 28, 2012

I live in a condo building that uses 3 Cisco Catalyst 3550 switches connected to a Comcast router with 100 Mbps download. Currently we regulate bandwidth by providing each user with 3 Mbps download. Even if only two people are active they still only get 3 Mbps download. I would like to set it up so if two people are using they each get 50 Mbps; a sort of 'dynamic qos. Is this possible with these switches? Would we have to purchase a Cisco router in order to provide this feature?

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Cisco Switching/Routing :: Changing Native Vlan On 3550 Switch

Dec 22, 2012

I am having trouble after creating a management vlan (99) on a 3550 switch.I have configured the vlan (99) and given it an IP (192.168.1.100) and a default gateway (my router address - 192.168.1.99).I can ping to the switch from a PC and vice versa. The management VLAN IP is fine but now I cannot ping to the router from either the PC or the switch.It seems that just by adding VLAN 99 with it's own IP address has now prevented pings from the switch/ PC to the router ?Due to the fact that I have created a new switch management VLAN with an IP, does this mean I have set up the router as a 'router on a stick' scenario ? [code]

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Cisco Switching/Routing :: Enable / Disable Interfaces On 3550 Switch

Jul 14, 2012

I`m looking to automate some functions in a web application.Functions like enable/disable interfaces on a Cisco 3550 switch.

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Cisco Switching/Routing :: 3550 EMI Switch Is Not Responding To Power Connection

May 10, 2012

My cisco 3550 EMI switch is not responding to power connection. I have checked and changed power cable. its still not working.fan is not running and no lights on front panel

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Cisco Switching/Routing :: Internet Access For 3550 Switch VLANs?

Feb 22, 2012

I have a small cisco switch cluster (seven different 2924, 3524cisco switches) with 3550 as a cluster control which does all the inter vlan routing that works fine.
 
This cluster is in semi production PBX interop testing lab. This is a closed network without internet access and not connected to our corporate network.However now I have to add this capability so some equipment in the lab can get Microsoft updates over the internet.
 
I've created a port on a 3550 (fa0/19) and connected it to another network that has internet access. It picked an ip address and when I'm logged in to the 3550 I can ping hosts on the outside network. However I can't ping any hosts on that network from any hosts that are connected to my vlans.I've tried a few different things, but still can't make it to work.
 
Here is a short version of my 3550 configuration:

!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log datetime
no service password-encryption

[code]....

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Cisco Switching/Routing :: 3550 - Switch Disconnects Another Voip Phone?

May 14, 2013

im having this strange issue where everytime i plug in a voip phone to my 3550 the switch disconnects another voip phone.then to fix the disconnected phone (7940) i need to power off the phone 5-10 minutes then power it on again.

but the strange thing is, once i have to do that to fix the phone and connect the phone back to the switch, the port link is up, but no macs are seen on that port.

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Cisco Switching/Routing :: Switch 3550 - Command To Display GBIC In It?

Nov 9, 2011

Is there any command to display the GBIC in the switch because I need to replace 3550 but I have no exact part number

the model is WS-C3550-24-SMI
and try
sh inventory
sh hardware
sh diag
sh module

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Cisco Switching/Routing :: 3550 - Copy IOS To Switch In ROMmon Mode?

Jan 24, 2012

I have a 3550 switch that was replaced at a remote site with no IOS. This is a switch not a router so tftpdnld does not work.
 
[Code]...
 
The problem is the switches interface never comes up so try to connect to the tftp server. I read on google it can't be done on a switch to copy from tftp to flash in rommon mode on a switch and to use XMODEM. My problem is I do not have access to it, I ssh into a 3640 which is an access server for all devices and that is how I have console to it, how to use XMODEM over ssh.
 
But I'm fairly certain that there has to be a way to just copy it from tftp? I have a 3550 local and when I put it in rommon mode it stops the port check at port, port 1 goes from green when you plug it in to off then port 2 changes to amber and the rest green. So just by the look of this I would believe tftp would work; you just need to use port 1.

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Cisco Switching/Routing :: 3550 Switch - Software Forced Crash Exception

Feb 7, 2013

Our switch had a little crash-fest this morning at 2:30 AM. I did find a web page about diagnosing Software Forced Crash Exceptions, but it did not look like ours was one of the more easily-identifiable ones.
 
It may be worth noting that we've only used this switch for about a month, everything seemed fine until now. When we got the switch it did not have any GigE modules, and this week we put 2 into it and have been using them for 2 servers.
 
It looks like the switch was crashing repeatedly over a period of 20 minutes, and then it stopped and normalized. In the logs of the router that this switch uplinks into, we could see the ethernet port flapping during the time that the switch wasn't reachable.
 
Here's the Show Stack on the switch:
 
Sfld_3550#    show stackMinimum process stacks:Free/Size   Name4404/6000   vegas_flash init3352/6000   SaveCrashBuffer5716/6000   CDP BLOB8512/9000   IP Background5596/6000   vqpc_shim_create_addr_tbl5584/6000   SPAN Subsystem5552/6000   SASL MAIN4944/6000   vegas IPC process8704/9000   cdp init process5404/6000   RADIUS INITCONFIG4928/6000   Vegas CrashBuffer5664/6000   URPF stats2536/3000   Rom Random Update

[code].....

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Cisco Switching/Routing :: 3550 - Unable To Ping Internet From HSRP Standby Switch

Nov 16, 2011

I have router connected to 2  3550 switches  directly. 3550A  and B  switches are running HSRP. OSPF is running between Router and 2 switches.
 
From Switch B  i can ping the Router Wan interface but not the internet sites. from Switch A  i can ping any sites?
  
Switch B 
3550SMIB#                          sh ip routeCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area       N1

[Code]......

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Cisco Switching/Routing :: Nexus 7k Gives ARP Request For Own Local IP Address?

Nov 20, 2012

Nexus Core switch 7K  Gives arp request for his own Local IP address continuously. This Logs keeps on coming for the past 2 months.
  
The Ip Address 10.80.18.1 is an secondary IP address of vlan 18 , which is used for Teleprescence.

interface Vlan18  no shutdown  no ip redirects  ip address 10.80.18.252/24  hsrp version 2  hsrp 18    preempt    priority 110    timers  1  3    ip 10.80.18.1  secondary    ip 10.80.18.254
  2012 Nov 12 18:22:06 FRMA_BK1_CSN7K_01-COR %ARP-3-REQ_IP:  arp [3829]  Sending A
RP request for local IP address 10.80.18.1 on Vlan18, request from pid: 3834
2012 Nov 12 18:22:07 FRMA_BK1_CSN7K_01-COR %ARP-3-INVAL_HDR:  arp [3829]  Found

[code]....

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Severe % Dropped Packets On XP Machine When Windows 7 Machine On Network Not Switch

Aug 2, 2011

I have a strange error on my home network that I cannot find a solution to.I have an Huawei SmartAX MT882 from TalkTalk acting as a modem connected to a D-Link DSL-G624T acting as a router/switch. Connected to the D-Link I have a Windows 7 Pro machine (64-bit, SP1) and an XP (home i think) machine (sp 2 i think).The SmartAX modem is set up to perform DHCP and DNS relaying and the D-Link has DHCP turned off and DNS relay turned off.The Win7 machine can access the network, get an IP address and access the internet without problems, regardless as to the status of the XP machine.The XP machine can access the network, get an IP address and access the internet with no problems ONLY of the win7 is powered up. When the win7 machine is off, the XP machine seems to drop about 25% of the ping packets between it and the D-Link router and has no internet access (because of this i assume). [code]

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Cisco Switching/Routing :: How To Enable Netflow Export On ASR1001

Nov 3, 2011

To enable netflow export on ASR1001, do i need the firewall feaure license or not ?Docs are not really clear, NBAR requires FW license, but i am unsure about Netflow?

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Cisco WAN :: Routing Between Routed Ports On A 3550 Switch

Aug 24, 2011

I have 2 3550's connected across a wireless link. [code] However, from Switch A, I cannot reach 10.1.3.9Can this 3550 not route traffic between 2 routed ports?

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Cisco Switching/Routing :: NetFlow / 6500 / Export Packets Were Dropped Due To No Fib?

Mar 13, 2012

I have a problem with the 6500 not exporting netflow data. They are not exported due to no fib.I have read somewhere that this has something to do with VRF. VRF are running on the router.ip flow ingress has been applied to desired ip int.Is there anything I could do to make it export netflow data?
 
VSS-core-XXX-rs1#sh ip flow export
Flow export v5 is enabled for main cache
  Export source and destination details :
  VRF ID : Default
    Source(1)       xxx.xxx.83.253 (Unknown)

[code]....

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Cisco Switching/Routing :: Different Netflow Export Profiles On Cat 6513 With Sup720

Aug 28, 2012

Is it possible to have one netflow export profile (may not be the right word...) to send all the flow information to one collector and another profile to only send traffic to and from centain IP addresses to another collector? If it is possible on the hardware and software, any quick sample config?
 
#sh ver
Cisco IOS Software, s72033_rp Software (s72033_rp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXH4,
 
#sho module 7
Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
  7    2  Supervisor Engine 720 (Active)         WS-SUP720-3B       SAL1115LJBR
 
Mod MAC addresses                       Hw    Fw           Sw           Status
--- ---------------------------------- ------ ------------ ------------ -------
  7  0017.9444.9814 to 0017.9444.9817   5.3   8.4(2)       12.2(33)SXH4 Ok
 
Mod  Sub-Module                  Model              Serial       Hw     Status
---- --------------------------- ------------------ ----------- ------- -------
  7  Policy Feature Card 3       WS-F6K-PFC3B       SAL1115L2NH  2.3    Ok
7  MSFC3 Daughterboard         WS-SUP720          SAL1115LH7W  2.6    Ok

Mod  Online Diag Status
---- -------------------
  7  Pass

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Cisco Switching/Routing :: 3750 No MAC Address On Switch Port

Apr 15, 2012

There 's a Cisco IP phone that sits between a PC and the switch port. On the switch port, no MAC address is learned. However, the switch is able to detect the IP phone and deliver power to it: [code] Switch is Catalyst 3750 with IOS version  12.2(58)SE1.

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Cisco Switching/Routing :: Get MAC Address From Switch Ports With SNMP V3?

Feb 1, 2013

I have been reading the postings on this site trying to retrieve the MAC address for the client devices (computers, printers) attached to our switches.  We have approximately 500 switches and I need to map the mac address to the switch.  It appears the OID information is for SNMP v2.  We are restricted to using only SNMP v3.  I have tried using the Cisco SNMP Object Navigator without any success. 

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Cisco Switching/Routing :: Determine IP Address Of 2950 Switch?

Aug 13, 2012

Do they have a default IP assigned to them?
 
I'm trying to access the CMS administration page from my browser. I've already tried 192.168.0.1 and that brings up my gateway (cable modem from Time Warner).

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Cisco Switching/Routing :: Change Ip Address In 2960 Series Switch?

Apr 19, 2009

How to change ip address in cisco 2960 series switch?

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Cisco Switching/Routing :: 3560 - MAC Address Not Shown At LAN Switch Port

Mar 6, 2013

Problem is that at some C65K I have directly connected Unix servers and the don't show MAC address at port, and same has happened at 3560 switched where I have too Unix based equipments connected. When use show mac-address interface XXXX, nothis appears at port and tested them with other equipments that worked fine.

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Cisco Switching/Routing :: 3750x - MAC Address Not Captured On Switch Ports

Feb 29, 2012

In my environment we have 3750x switches running ios 15.0 (1) SE2.  We have port security mac address sticky configured on all our switch ports.  I noticed that we have several interfaces (on different switches) that are up but have not captured the MAC address from the workstation.  Here is one example:
 
interface GigabitEthernet2/0/11
switchport mode access
switchport port-security

[Code].....

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