Cisco Switching/Routing :: Clearing Single ARP Entry In 6500 Switch?

Feb 2, 2009

Is there any way to clear a single ARP cache entry on the 6500 switch ?

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Cisco Switching/Routing :: 3560 - Unable To See Entry For Switch

Oct 30, 2011

I have configured a new switch 3560 switch and connected to 4500 switch and formed a trunk connectivity.Now the issue i am facing is when i do a SH CDP NEIGHBOUR from 3560 switch i am able so see 4500 swries switch but at the same time when i do SH CDP NEIGHBOUR form 4500 series switch i am not able to see the entry for 3560 switch.But i am able to telnet the new switch with out any issues

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Cisco Switching/Routing :: 6500 Single IP Bound To 2 Server Mac Address

Jun 11, 2013

I have 2 servers, one active, the other standby, both will be using the same IP. If the active fails then a re-patch for the standby to make this the active. I understand that i will need to clear the arp & maybe mac address table on the 6500 for the new active server to work, as the failed server will have its mac address on the 6500,.
is there a way around this so i dont have to clear the arp cache & clear the mac table? [code]

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Cisco Switching/Routing :: Login To 2950 Switch And Modify VLAN Entry On It?

Nov 3, 2011

In my lab, there are some machines that are connected using Cisco 2950 switches. Those machines belong to a VLAN.Now I need to modify the VLAN settings of the machines and as such I also need to modify the VLAN settings on the ports on the Cisco switches.
In order to do this, first I need to login to those switches, but due to a lack of knowledge transfer, I don't have the password. Is the some generic password?Second I will need to  modify the VLAN settings on each individual port. How can I do this?

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Cisco Switching/Routing :: SRW2024-K9-BR / Switch To Configure Static ARP Entry For MS NLB Multicast?

Mar 14, 2013

I need a switch to configure a static ARP entry for a MS NLB multicast.

Could answer me if I can do with the SRW2024-K9-BR?

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Cisco WAN :: 3750 - Use Two Core Switch 6500 With Single Mode Fiber As Transport Equipment?

Nov 30, 2012

I have a requirement to connect two 3750 switch with 10G speed between two sites with 150km distance. We will lay-out our own fiber (48 core) between two sites. I just want to consult the following:
1. Could i use two core switch 6500 with single mode fiber as a transport equipment?

2. Or i need to use SDH equipment because of the distance concern? If so do i need a repeater?Could i use Cisco Metro Core ONS, which one?

3. Any other option to achieve this requirement?

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Cisco Switching/Routing :: 3750X - Single Switch Stack?

Mar 8, 2012

I have a 3750X 24 port switch (with NM-1G network module) running IOS 15.0(1). Is there any benefit or reason to plug in the included Stack Wise cable and loop it back to itself in a single switch installation?
I don't see any recommendation in the documentation. The data sheet indicates a single switch is a non-blocking device so I'd think there's no bandwidth advantage like there is when connecting an actual multi-switch stack and needing to close the loop for the full 32 Gbps stack bandwidth.

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Cisco Switching/Routing :: 2960 - Dot1x Authentication Session Id Not Clearing

Nov 2, 2011

I am seeing the following behavior when computers move from one switch to another with dot1x ONLY when there is a 'stupid' switch in between.
computer --------  'stupid' switch ------- 2960
dot1x is working fine but when the computer is disconnected, the port still shows the authentication session id so when the computer connects to another port or switch, authentication succeeds but traffic doesn't pass. While I'm almost certain that the culprit is the 'stupid' switch that doesn't clear the session id, I have already tried another one and the problem remains so I'm actually just asking for a confirmation that all these 'stupid' switches present this behavior and if there is a workaround in this case.

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Cisco Switching/Routing :: Multiple IP On Single Vlan In Cat 45xx Switch

Mar 12, 2012

I would like to know if it is possible to assign a 3rd IP address to my end user vlan. Basically the 45xx acts as my end user gateway and has been confirgured as below
interface VlanXX
description Main Vlan
ip address 2.X.X.X secondary
ip address 1.X.X.X

Here, due to IP address exhaustion in my end-user network, i want to add one more subnet X.X.X.X/22 to my network and assign one IP more from this range to the above vlan to act as the gateway IP.

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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 :: Creating Stack Of 2960s From Single Live Switch

Sep 23, 2012

I have a live 28port Catalyst 2960S switch. By live I mean that there is an essential piece of equipment plugged into this switch that can suffer little to no downtime. Over the course of time the number of devices patched into this location has increased to exceed the 24 ports available and we have had to resort to adding unmanaged switches to fill the need. We have acquired an additional 2960 & stacking modules that I would like to stack together, keeping the existing switch as the master. It is my understanding that the stacking modules are hot-swappable and that this member switch can be added without bringing the master switch down, thus creating zero down time for the financial server that is connected.
The steps I believe that need to be followed are as such: write mem to existing switch and backup to our TFTP serverinstall the stack module in the existing (while powered up) and new (while powered down)place the 2 redundant FlexStack link cables on both switchesthen simply power the member switch on After boot the member switch will get it's OS and configuration from the master and I can begin moving CAT5 cables from the unmanaged switches to the stack.

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Cisco Switching/Routing :: QOS On 6500 Switch?

Feb 17, 2013

I am trying to guarantee 100mbps for a vlan across a gig link.  I have done some research and found this command for switches
mls qos srr-queue input priority-queue 2 bandwidth 20
However it doesn't seem to work for my 6500.  I know the 6500 uses PFC for QOS but I have no idea how it works.  how I can guarantee a vlan 100mbps across a 1gig link?

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Cisco Switching/Routing :: IOS Copy For Switch 6500 With Sup-720

Feb 13, 2013

I have 2 Chassis 6506-E with sup 720. one of them work properly(Switch1) but another(Switc2) not boot form bootdisk and go to ROMMON mode. I Captured IOS from Switch1 with tftp but I cant Copy this image to switch 2 with tftp.

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Cisco Switching/Routing :: 6500 Series Switch - TCP Adjustment

Oct 14, 2012

I have a routed interface on a Cisco 6500 Series switch.  I am trying to find a way to adjust the tcp mss.To date I have not yet been able to find a way to accomplish this.  Is this just not supported?

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Cisco Switching/Routing :: Switch 6500 Policy Map Inbound

Jun 9, 2013

ON switch 6500 i have configured an interface vlan x and applied policies on inboud and outbound directions as per below: [code] But the problem i am facing is that the policy outbound works ok , but the policy inbound doesnt work at all. specifically it doesnt match anything. [code]

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Cisco Switching/Routing :: 6500 - Power Off Core Switch?

May 31, 2012

we need to relocate our core switch 6500 with sup 720 to another bldg
what is the command to gracefully shut it down I mean power off
I was told one can just switch off the power

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Cisco Switching/Routing :: 6500 Changing Switch Configuration

Aug 27, 2012

I am going to change a running 6500 switch. I am missing a best pratice doc for changing a cisco switch configuration. My question is if a startup-config has an error (due to typo mistake, or due to comands not supported on latest IOS) and I do copy tftp startup-config then what will happen ? I want to make sure when I do "reload" the switch then it should boot normally with the latest startup config !

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Cisco Switching/Routing :: 6500 Switch Interoperability With Other Vendor?

Apr 3, 2013

I tried many different things to get the accurate answer for my issue. I wanted to know, will i face any connectivity or looping issue in the network if i connect Broacade SAN switch on a cisco 6500 switch.Also need to know to maintain a DATA DOMAIN which SAN switch is better? Cisco or other vendor.

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Cisco Switching/Routing :: Pm Scp Process 100% And Switch 6500-E Crash?

Oct 24, 2012

The switch 6500-E is frequently crashing whenever the pm scp process reach 100% .I got it under the  command "remote command switch show proce cpu".How to solve the problem. I opened the TAC and the engineer says to upgrade the image12.2(18) sxf.Is there any other work around that would avoid to reimage the switch and reloading.

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Cisco Switching/Routing :: 6500 Switch Won't Accept Long IOS Name

Mar 29, 2012

I'm in the process of upgrading the IOS of our 6500 switch and unfortunately, the images were messed up by other users. Here's the output of show redundancy. [code] would i have any issues if I reload this slave supervisor engine to load the SXI8 IOS?

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Cisco Switching/Routing :: Catalyst 6500 Switch Architecture

Jul 16, 2012

one of the most widely deployed switches in the world. The "Swiss Army knife of network", can do routing, switching, security, wireless and almost everything that you would want your core switch to do. Remember to use the rating system to let Akshay know if you have received an adequate response. 
Akshay might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Network Infrastructure sub-community LAN, Switching and Routing discussion forum shortly after the event.  This event lasts through July 27, 2012. Visit this forum often to view responses to your questions and the questions of other community members.

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Cisco Switching/Routing :: Configuring 1941 With 8 Port EHWic Switch Module And Onboard GE Ports In Single LAN?

Jul 1, 2012

Can you configure a Cisco 1941 to use an 8 port EHWic module and the 2 onboard GE ports in a single LAN?

I've discovered you can't have the on GE ports associated with a VLan, and I'm when I've previously researched for a solution, bridging was mentioned but I cannot seem to get it to work (or completely understand it)The reason I would like to use all 10 ports on for the LAN is becuase I have 10 devices I need to connect to the 1941?

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Cisco Switching/Routing :: 6500 - Changing VTP Mode Of A Core Switch

Oct 14, 2012

We have two 6500 core switches and one(primary) of them is running in VTP transparesnt mode and the other (secondary) one is running in VTP client mode. I would like to change the VTP mode of the second switch to transparent mode. Would it cause any issue. I guess i have to create VLANs onto the switch.

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Cisco Switching/Routing :: Migrating Core Switch From 3750 To 6500?

Jun 5, 2013

I am planning to migrate the core switch from cisco 3750 to Cisco catalysts 6513 switch. What could be the best approach to minimize the downtime or avoid disrupting the production. I have couple of thoughts, one method is to build the core and then replace the existing core, another option is to build the new switch as the second VTP server and once it recieves all the VTP information then disconnect the old server.

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Cisco Switching/Routing :: Spanning-tree Change On VSS 6500 Switch?

Jun 19, 2012

changing the Spanning-tree mode on a live 6500 running in a VSS mode?If so what are the things to watch out?

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Cisco Switching/Routing :: 6500 - Switch Booting - Hardware Failure On SUP

Jul 7, 2012

One of my customer had a problem with A/C and the room temperature reached almost 50 C. We came to the site and saved the configuration, took a backup and shutdown the switch.
After the A/C problem is resolved, we tried to power-on the switch .. and we found that it is going to the rommon.
I put "boot" command to boot from the bootdisk, but I am getting the following error:

I tried to search it, But it is resulting in that most probably it is a hardware failure on the SUP.

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Cisco Switching/Routing :: Connect 6500 With 4948 Switch Using 10G Optics

Jul 8, 2012

I need to connect a 6500 switch with a 4948 switch using 10G optics. On 6500, line card used is WS-X6704-10GE and I am aware that WS-X6704-10GE is a xenpak and 4948 ports are X2. What is the way to make the connection between xenpak and X2 work?

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Cisco Switching/Routing :: Combined Power Mode For 6500 Switch?

May 18, 2012

The following discussion is based on cisco cat 6500 switches with two power supplies: p1 and p2.  . Both power supplies are running in combined mode .Each power supplies is rated with 500 watts max( I just picked 500 watts for simplicity)Combined mode In combined mode, each power supply provides approximately 83% of its  capacity to the chassis. This allows for greater utilization of the  power supplies and potentially increased PoE densities
1) Let say  our specific 6500 switch's configuration requires 1000 watts. We have two power supplies p1 and p2 ,each with rated power of 500 watts.  Both power supplies must operate in combined mode.  Will power supplies be able to meet the total load power requirement of  1000 watts?
Here is my understanding :The maximum power delivered by each power supplies is 83 percent of its rated power, assuming power supplies are running in combined mode.
So Maximum power delivered by power supplies

=  83% of p1+ 83% of p2
=  83% of 500 + 83% of 500
= 415 +415
=830 watts

Thus the required load of 1000 watts can not be met by our power supplies in combined mode. 
2 )Suppose our switch's switch configuration needs 500 watts.  Again our power supplies each rated with 500 watts, are configured for combined mode. How much power is being delivered by each power supply?  Is it 83 percent of the total load i.e 500 watts?

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Cisco Switching/Routing :: 6500 - How To Set Switch On Auto Terminal Server

Apr 22, 2012

I have a switch(6500) with 2 vlans(2 SUBNETS) and from the other side of my network i have 2 terminal servers.

I want to have a VIP in my 6500 switch which i have the 2 vlans and when the first vlan(network) try to connect to the VIP

my switch will forward to first terminal.When the second vlan try to connect to VIP the switch will forward to second terminal.
I'd like the switch to decide in wich terminal server will forwared the packet based on source network.
I am not sure how i can do this???I use VIP with SLB???I use NAT???PBR?

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Cisco Switching/Routing :: Enable STP To Specific VLans In 6500 Switch?

Jun 13, 2013

I have 6500 with this STP configuration:
spanning-tree mode rapid-pvst
no spanning-tree vlan 1-4094
I need to enable STP on vlan 100 and vlan 103.
When I do "spanning-tree vlan 100,103 root primary" and then "show spanning-tree".I see that STP is not enable on these vlans (100,103).
I tried to do "no spanning-tree vlan 1-99,101,102,104-4094" and it is not work.
There is a way to enable STP on vlans 100,103 without to do "spanning-tree vlan 1-4094"

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Cisco Switching/Routing :: Etherchannel - Redundant 6500 To 3750 Datacenter Switch?

Mar 27, 2012

I 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)?

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Cisco Switching/Routing :: Layer 3 Port Channel From 6500 VSS Switch To Two Standalone

Jul 30, 2012

Configured Layer 3 portchannel from 6500VSS enabled switch to two different 6500 standalone switch. Configured first ip on VSS switch, second ip on standalone switch1 and third IP on standalone switch2. My question is
1. Will the portchannel be up?
2. If port channel is up, will I able to ping the connected IP's.

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Cisco Switching/Routing :: How ACL Respond On Normal Switch 6500 When Applied On Respective Vlans

Nov 22, 2011

I am confused on how acl's respond on normal cisco switch (eg.6500) when applied on respective vlans. this is my scenario:on a 6506, i have 2 main vlans in question: Vlan 100 ( vendor1 - ) & Vlan 200 ( vendor2 - ). the requirement is,
 - vendor1 should be able to access/ping vendor2 end points

- vendor2 should not be able to access/ping vendor1 end points

Now, if i ping from a host in vlan 100 to another host in vlan 200, will i be able to get a successful response ?

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