Cisco Switching/Routing :: 3750 / 6509 - Upgrade Core Switch Without Disrupting Network?

Feb 2, 2013

I am planning to upgrade the current core switch(3750) to 6509 series switch. Since we have a production network running we have to plan for an online core switch upgrade.

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Cisco Switching/Routing :: Upgrade IOS For Production Core 3750 Switch

May 7, 2013

I want to upgrade IOS for my production core 3750 switch. Below is Show version/fash output. I have IOS image "c3750-ipservicesk9-mz.122-55.SE7", need to confirm below concerns:-
 
1-As this is stackable switch do i need to upgrade on all Switch..i can see there are 3 flash while doing show flash?
2-Is above IOS image support with  my switch? do i able to enable ssh?
3-is flash memory is enough to succefully upgrade IOS?
4-Any other point which i should keep in mind before upgrading..any special feature which this IOS wont support.

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Cisco Switching/Routing :: 2 Internet Connection Connected To Same Core Switch 6509

Jan 25, 2012

i'm already has one internet connection is conecting directily to the Core Switch 6509, and the Switch is route any internet request with default route:
 
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.170.10.10
 
10.170.10.10 is --> Next hop for the DSL router internal IP, and it's working fine.
 
We have a new internet connection with another ISP/ with another DSL router, how to connect both of them to exit from the Core Switch 6509.
 
is it ok if i make another default route to the Next hop to the new DSL router as:
 
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.80.10.10
 
10.80.10.10 is --> Next hop for the new DSL router internal IP.

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Cisco Switching/Routing :: 6509 Core Switch Command / IP PIM Sparse-dense-mode

Oct 23, 2011

What is PIM? give me an example when I will use and not use the PIM command.

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Cisco Switching/Routing :: Limit For Creation Of Port Chanel In Core Switch 6509 And 6513

Feb 20, 2012

How much is the limit for the creation of PortChanel in a Core Switch 6509 and 6513?Is there a limitation byu hardware?

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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 :: Upgrade Software Of Core Switch 4503e?

Nov 2, 2011

i am trying to upgrade the software of the core switch 4503e, i could not get the managemenet ip address up and running. what i did is the following :
 
interfave vlan 1
ip address 192.168.1.1 255.255.255.0
no shu
  
then my laptop ip address is 192.168.1.100 255.255.255.0?result pinging from CLI is request time out.is there any els command where i need to input ?

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Cisco Switching/Routing :: 3750 Stackable Switches And 6509 Core Switches

Nov 14, 2011

If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?

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Cisco Switching/Routing :: Any Challenge To Upgrade Core Switch 6500 Series From Nexus 7009 Which Runs NxOS

Jan 28, 2013

Is there any challenge to upgrade core switch 6500 series from Nexus 7009 which runs NxOS, because i have 3750X series switches connected at distribution and access layer in my network topology??
 
Is there any challenge if we place NxOS in core and IOS in distribution and Access layer??? how we are able to match sh run config in existing 6500 switch to Nexus 7009 NXOS?

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Cisco Switching/Routing :: 3750 Switch IOS Upgrade Failed

Oct 4, 2012

I have upgraded my 3750X switch from

c3750e-universalk9-mz.122-53.SE3
c3750e-universalk9-mz.122-55.SE5.bin
 
later that by mistake i typed delete /force /recursive flash:now, I am unable to load new IOS error loading "flash:c3750e-universalk9-mz.122-55.SE5.bin" Interrupt within 5 seconds to abort boot process.Boot process failed...

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Cisco Switching/Routing :: 3750 - Firmware Upgrade Of Switch Stack Fails

May 9, 2012

I have a stack of 4 Cisco Switch 3750 (1 x WS-C3750G-24T, 2 x  WS-C3750-48P and 1 x WS-C3750V2-48PS) and I want to do an firmware upgrade of this stack. Actually, all the 4 switches are at the firmware version 12.2(50) SE1 "IPBase" and I want to upgrade them to 12.2(55)SE5 IPBase. According to the release notes, all the switches in my stack are supported.
 
To upgrade the firmware, I use the command "archive download-sw /imageonly /overwrite tftp://IP_Address/c3750-ipbaselmk9-tar.122-55.SE5.tar" The firmware gets uploaded correctly but then I get the error message "There is insufficient space in flash: to install the required image. Clean up some old images, and try again."
 
When I do a "show flash", I see that the switch has 5650944 bytes free of 15998976 bytes.
 
How can i upgrade my switches? Is there an error in my command which I use? Do I need to add an other option?
 
The problem is, the switches are located in a branch office and there is no direct access to them. Everything must be done remotely.

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Cisco Switching/Routing :: Using 6509 Series As Core Switches

Jun 2, 2012

we are using cisco 6509 series switches as core switches. and Cisco 4510,4507 series switches as edge switches. all the vlans are created at core switches and propogating to edge switches through VTP. we are using OSPF as routing protocol at core switch for internal routing. till now we are using 4510,4507 switches as layer 2 switches. Since, 4510 & 4507 switches are hign end swithces i want use them as layer 3 switches instead of layer 2.if i change these switches from layer 2 to layer 3 does it make any impact on our network or better to keep them as layer 2 switches.if i change these switches to layer 3 is there any advantage i will have.

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Cisco :: 3750 Via Vlan250 From Core 6509 - Getting Connection Refused?

Apr 11, 2013

We just replaced our ancient 6509 dedicated SAN switch with a Nexus 5548UP (with 4 2248 FEXs).Our old SAN 6509 was completely separated from the Core 6509, and that Core 6509 doubled as a Datacenter switch. We've now segmented the "Datacenter" and "Core." The SAN and servers are connected to the Nexus gear rather than the Core. The old SAN had only 3 vlans. One for SAN data (Vlan16), one for management interfaces (Vlan250), and one for switch management (Vlan15).

As part of my cleanup, I want to get rid of that Vlan15 and use vlan250 for switch management. In another building, we have a 3750 that provides SAN (Vlan16) and management (Vlan250) connectivity to a single Equallogic box and a Dell PowerVault tape drive for backup purpose. That 3750 is the only device that still has an address on Vlan15 (other than the core). Refer to the drawing below.

The Core 6509 is the gateway for Vlan250 and Vlan15. I have created an interface for Vlan250 on the 3750. ACLs exist on vty connections of each switch allowing telnet access ONLY from the Mgmt 2960. There are no ACLs on the Vlans themselves.From the Mgmt 2960, I can telnet to the 3750 using either its Vlan250 IP address or its Vlan15 IP address. However, if I shut down Interface Vlan15 on the Core 6509, I can no longer telnet to the 3750, not even using its Vlan250 IP address.

The connection times out. If I attempt to telnet to the 3750 via Vlan250 from the Core 6509, I get connection refused (which I should get due to the ACL on the vty connections). I can still telnet to other devices on Vlan250 (such as the management interfaces on the Nexus 5Ks). Why am I able to telnet to the 3750's Vlan250 Interface only when the Core's Vlan15 Interface is Up?

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Cisco Switching/Routing :: 6509 VSS Implementation As A Service Module Core

Jun 8, 2011

I m planning to implement VSS in core but want some inputs on IOS as i have FWSM as a service module Core :- Ii am running 12.2(33)SXH2a on my Core 6509  and i checkd cisco sites and Fwsm release notes but it states only  I-Train of IOS while mine is H-Train so can I directly upgrade to  I-Train or I was thinking of SXH8b IOS.

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Cisco Switching/Routing :: Adding UCS 6248UP To 6509 Core Switches?

Apr 21, 2013

In the next couple weekends I'm planning to add 2 CISCO UCS 6248UP Interconnects to 6509 Core Switches via 10G links.
 
Is there any impact anticipated?  It's a production environment and no loss of up-time is acceptable.

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Cisco Switching/Routing :: 6509 To 6509-E Chassis Upgrade?

Nov 21, 2011

I currently have a couple of 6509 chassis (router/switches) with the following hardware blades:

     x3     48 ports
     x1     NAM
     x2     Sup720
     Running 12.2(18)SXF3
 
I am keeping the four Sup720 modules and have purchased new versions of the others blades including two new 6509-E chassis?Can I take my stand-by Sup720 out of the production machine and insert it into the new chassis?

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Cisco Switching/Routing :: Upgrade Of 6509 To 6509-E Chassis

Nov 21, 2011

I currently have a couple of 6509 chassis (router/switches) with the following hardware blades:

x3     48 ports
x1     NAM
x2     Sup720

Running 12.2(18)SXF3.I am keeping the four Sup720 modules and have purchased new versions of the others blades including two new 6509-E chassis. Can I take my stand-by Sup720 out of the production machine and insert it into the new chassis?

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Cisco Switching/Routing :: Connecting 5548 Pair To 2 6509 Core Switches / No Vss

Jun 8, 2012

connecting a 5548 pair to our core 6509s.  Just want to be sure we don't introduce any issues into the network.The 6509's are connected and perform all the routing.  Essentially, we're moving away from a 3750 stack in the data center and the 5548s are the replacement.  We'd want to limit the vlans to the specific server network vlans. Our current setup is a port channel between the 3750 and each of the 2 6509s for redundancy. I'd like to use the same functionality when we connect the 5548's but I'm looking for what the config should look like to ensure no spanning tree loops are introduced and that it is configured optimally.

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Cisco Switching/Routing :: View Capacity Throughput (backplane) Of Core Switches (6509)?

May 30, 2012

How i can view the capacity throughput (backplane) of core switches (6509)? How i know much is in use?

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Cisco Switching/Routing :: Dual Core / SUP 720 6500 IOS Upgrade?

Apr 29, 2012

Doing a bug scrub on our dual core, dual Sup 720 6500s tonight. We are going from s72033-advipservicesk9_wan-mz.122-33.SXI4a.bin to SXI9. I want to get a second set of eyes on my script since I have not done this for about 1 1/2 years. Following this doc:[URL]  
 
Script:
 
Backup
sh ver
remote command switch show version

[Code].....

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Cisco WAN :: 6509 - MAC Address Flapping In Core Switch

Dec 28, 2010

I am getting following error in Cisco 6509 switch.BUt there is no impact in the switch.
 
: %MAC_MOVE-SP-4-NOTIF: Host 0000.0c07.ac01 in vlan 694 is flapping between port Te8/1 and port Te7/1
29:33.959: %MAC_MOVE-SP-4-NOTIF: Host 0000.0c07.ac01 in vlan 269 is flapping between port Te7/1 and port Te8/1

[Code].....

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Cisco WAN :: VPC Configuration Template With Two Core 6509 Switch

Jan 3, 2013

What is the VPC configuration template with two core 6509 switch.Pls find the attachment for Network topology.

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Cisco Switching/Routing :: 3750 EtherChannel / Stacking In Core Layer

Nov 23, 2011

As 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.

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Cisco Firewall :: 6509 Core Switch - How To Create DMZ Vlan

Oct 31, 2012

I need to create a DMZ Vlan.  Core switch is a 6509.  FW is an ASA5520.  Need to create a VLAN for DMZ purposes for outside facing servers.  NAT is used on ASA.

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Cisco Switching/Routing :: 3560G / 4948 / 3750 / 3600 - DC Core Design

Jun 19, 2012

I'm working designing a switch system for our core/data center.
 
We have 5 esx hosts, 2 sans with 3 nodes each.  We have voice servers, a couple of routers and a few odds and ends.  There are 7 other locations aggregating into this data center via 1-2gbps fiber connections.  The bandwidth usage on these links is minimal, but there is a total of about 3000 devices aggregating into the system. My main concern right now is the 3560G's are seeing many output drops, due to the small buffer size on those switches.  I have been looking at couple of options to resolve this issue, including the 4948E, 4507E, and 3750X switches.
 
Budget being the biggest factor, I am finding that the 4507 might be out of the price range.  So I was leaning towards the 4948E switches for connecting the servers and iscsi san's as the 3750X is not recommended for iscsi.  Redundancy is important so I would like to have two. The second concern is that I need to aggregate the fiber connections and for that I was looking at the ME-3600X or possibly the WS-C3750X-12S-E.  I'm running eigrp, so this switch would need to have full routing, as it would also serve as the core switch for the 4948E's.
 
So in the end I was thinking that two 4948E switches up linked to the ME-3600X which would do full routing for the fiber aggregation and any routing needed for the servers and sans.
 
Servers and Sans_________4948E________ME-3600X_________7 fiber connections
                    |____________4948E_____________|
 
I would look at a second ME-3600X in the future for redundancy.  This is the lowest cost biggest buffer solution that I could find.

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Cisco :: Core Switch 6509 - Route Each Vlan To Exit From Spacific DSL

Jan 26, 2012

i'm already has one internet connection is connecting directly to the Core Switch 6509,Vlan 500 (1921.168.1.0) and the Switch is route any internet request with default route:
 
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.170.10.10
10.170.10.10 is --> Next hop for the DSL router internal IP, and it's working fine.
 
The Problem: We have a new internet connection with new Vlan 600 (172.16.1.0) another ISP/ with another DSL router, so i need your kindly support and suggest how to connect both of them to exit from the Core Switch 6509. is it ok if i make another default route to the Next hop to the new DSL router as:
 
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.80.10.10
10.80.10.10 is --> Next hop for the new DSL router internal IP.
 
is there any way like default route , route-map or any other features to :

route Vlan 500 (192.168.1.0) to exit from DSL 1 --> 10.170.10.10
route Vlan 600 (172.16.1.0) to exit from DSL 2 --> 10.80.10.10

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Cisco Switching/Routing :: 3750 / 4507 - Upgrading Core Switches With Nexus 7010

Feb 8, 2012

The company I work have finally decided to enter the 21st century and invest in a new telephone system (Interactive Intelligence) to replace the legacy system which has served us well for the past 10 years. The project has only just started and involves upgrading sections of CAT3 cabling to CAT6, replacing Cisco 3550 switches in one area of the building with Cisco 4507 switches and upgrading our Core switches with Cisco Nexus 7010's. The area that concerns me most is enabling the network for qos as I have very little experience with it. At the moment Im trying to read as much documentation as I can on QOS to bring myself up to speed.
 
The access layer switches will consist of a mixture of Cisco 3750 & 4507 switches connected to Cisco Nexus 7010 switches which will form a collapsed aggregation & core layer.
 
Basically, how I should approach this daunting task of making sure the network will support VOIP.

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Cisco Switching/Routing :: Configure 3750 Stack As Core / 2960 As Access Layer Switches

Sep 29, 2012

I configure 3750 stack switch as core and 2960 stack switches as access layer switches.I connected my laptop to one of my core stack in VLAN 10 and I am pinging to one of my server in VLAN 1. What will be the minimum latency at the time of inter VALN routing

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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 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 :: How To Configure 1 Core Switch 4500

Jun 2, 2013

i configure the uplinks as etherchannel, i configure two svi interface on core switch int vlan 51(192.168.51.1) and int vlan 50(192.168.50.0) for this two svi int i configured two dhcp pool , when any of the pc is requesting for dhcp add i am getting dhcp request failed/

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Cisco Switching/Routing :: 2960G Core Switch For 400 Users

Jun 7, 2012

I'm trying to decide what switch to use as a core for 500 users. I'm currently looking at either 2 x 3750X stacks or 2 x 4500s with dual SUPs and PSUs, both options will provide the number of switchports required without the need for additonal access layer swiches. Which switch option is best to go for here? All of our services will be located in our data centre which will be connected using 2 1000Mbps MPLS circuits. I wont need any advanced L3 features and we are not likley to scale over 450 users. Also is it ok to use the dual switch stacks or chassis to provide the collapsed core/access layer or is it best to have a dedicated core (using one of the above options with less switchports) and having a dedicated accesss layer using 2960Gs for example. Our structured cabling terminates in a single comms room so we wont need to distribute switches throughout the office.

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Cisco Switching/Routing :: How To Connect Two Core Switch C4510R+E SUP 7-E

Nov 4, 2012

I have 2 units core swicth C4510R+E SUP7-E  need to connect together for redundant purpose , i bought also 4X 10GE uplinks for each core switches .May i know how i shall connect both core switches together using my spec Catalyst 4500 E-Series 12-Port 10GbE (SFP+) ?

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