Cisco :: Auto Failover Of Core Switch With Other Route

Apr 18, 2013

I want my core switch auto failover to other route if the primary route is link down it will go to the secondary route

example
ip route 0.0.0.0 0.0.0.0 1.1.1.1
ip route 0.0.0.0 0.0.0.0 2.2.2.2 100

if my core switch detect next-hop 1.1.1.1 it will re-route and go to the 2.2.2.2 for the next-hop my core switch using static route and cant support ip sla

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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 WAN :: Auto Failover On The Cat3560?

Sep 20, 2012

I have got a Branch Office with two redundant links connecting from Head Office A and Head Office B. Both links are LES 100MB and carry only VLAN 33 traffic. Head Office A has an ASR 1002, Head Office B has Cat3550 and the Branch Office has Cat3560. Both Cat3550 and Cat3560 at L3 switches.At the moment if one link fails i have to manually disable or activate ports/interface on either Head Office A or Head Office B devices and ammend the default gateway on Branch Office switch to either Head Office A or B device, which ever is working.I am looking for an automated and reliable solution for this so that i dont have to make any changes on the devices and failover happens automatically.

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Auto VPN Failover Using Multiple WAN Gateways

May 9, 2012

We our currently using site-to-site VPN tunnels to connect our multiple offices using static public IP's via ADSL connections.We wanted to get an additional ADSL connection from a different ISP so that if one connection drops, the other could be used.Are there any hardware devices or tricks we can use to automatically get our networks to failover to use the backup ADSL connection and have our VPN traffic remain up?

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Cisco Switching/Routing :: 1941 Auto Failover With Load Balancing?

Jan 27, 2013

One of our customer has  3 ISP Line, out of which Two are Broadband and One is Leased Line.   All 3 ISP interfaces are Etherent.
 
Now, they want Auto Failover with Load balancing among these 3 ISP lines.
 
Can we do same implementation in Cisco 1941 Router??  What licenses required in router for same?

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Cisco Switching/Routing :: IP SLA On 3750 Default Route Failover

Jul 27, 2010

IP SLA configuration fails over but cannot ping the 4.2.2.2 via Site B.  Here is the output on Cisco 3750...

SW2#show runBuilding configuration...
Current configuration : 2901 bytes!version 12.2no service padservice timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname SW2!boot-start-markerboot-end-marker!!!!no aaa

[Code].....

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Cisco Application :: Failover ACE / Default Route Redundancy / 6500

Jun 20, 2011

Since the ACE supports only static routing, when pointing a default route from the ACE what is your preferred method when using multiple 6500s with an ACE in each in a failover scenario to prevent just pointing at one 6500? Static route to an HSRP address? Multiple static routes on the ACE, etc?

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Cisco WAN :: 1921 OSPF To Two Routers Sending Default Route From Failover

May 28, 2013

Have a 1921 that has 3 eth connections (1 LAN, and 2 WAN) - I have 2 seperate OSPF processes (2 areas) on the WAN Ints - both upstream WAN's are sending defaults back to the 1921, and the 1921 is sending it's LAN range to them.
 
I have ip ospf cost 150 set on the "failover" WAN connection interface (Both on the 1921 and upstream), but the 1921 is preferring the default route from the "failover"?
 
The default routes are both being received by the 1921, but it's preferring the "failover" Int with the ip ospf cost 150 configured?

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Cisco Switching/Routing :: 7600 Static Route ECMP Failover?

Apr 29, 2012

I have run into a problem testing static route failovers using ECMP.  I have an edge device (SUT) that has 2 NIC interfaces to an internal Loopback.  Each NIC is a unique Gi port on an 7609 VLAN tagged with unique IP subnets.  The 7600 is configured to route the loopback via the 2 NIC.  I am using CEF in the network for other traffic performance testing.  Using an external sniffer we can verify that when a ping is initiated externall to the SUT loopback a specific path is selected by the router. 
 
Ping host ------Network-----7609 Gi1/21 (172.16.110.9)-----------SUT Nic1 (172.16.110.10)
                                        |                             |
                                        |                             -------Loopback 137.168.68.114/32
                                        |                             |
                            7609 Gi2/21 (172.16.110.73)------------SUT Nic2 (172.16.110.74)

[code]....

Now, when the selected path is taken out of server (pulling cable for example), the 7609 is not clearing the routing table to indicate that particular path is down and failing over to the secondary path.  Other things I have noticed is the show ip cef still shows both peers as well as the arp table but the interface shows down (show interface gi1/21 for example).  I am running 15.1.  My understanding is that since the ports are directly connected to the router, the ports should be detected as down and any association of the IP for the down port should removed.  This should trigger the static route to update the static route for the end destination to use the second path and traffic should continue. 
 
ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)BOOTLDR: Cisco IOS Software, c7600s72033_rp Software (c7600s72033_rp-ADVENTERPRISEK9-M), Version 15.1(1)S1, RELEASE SOFTWARE (fc1)

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Core Switch Getting Hanged?

Jun 6, 2011

In my Company there is a core Switch 4500 series , to which in the 1st module servers are connected and in the second module 2960 , 3750 series Switches are connected, problem is that the Utilization of Core switch is very high and the core gets hanged. the configuration of the senerio is VTP domain i.e core is Server and the rest are Clients....

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Cisco :: Connecting Servers To Core Switch?

Jul 19, 2011

there are more than 15 servers which include xen,esx,vmware,also san etc..which are connected to L3 core switch directly. And vlans are created for each.....xen,iscsi,vmware,xen,server. wanted to know is there any other technology other than directly connecting servers to core switch and assigning vlans that can be used in place?

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Cisco :: L3 Core Switch VLAN Monitoring With IPS?

Jun 10, 2012

We have a L3 core switch with multiple VLANs setup. Is there a way to place an IPS so as to monitor the traffic passing between, lets say, VLANS 1-3 and VLANs 4-10?

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Cisco :: LMS 4.0 - Core Switch Is Showing In RED Color

Aug 31, 2012

I am facing issue with LMS 4.0. The Core Switch is showing in RED color,and device type as UNKNOWN. It was working fine but some how it is showing this problem.

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Set Modem / Router To Auto-switch Off At Particular Time?

Apr 11, 2012

I usually put some stuff up for downloading and go to sleep. Now I setup my computer to auto-shutdown at a particular time via cmd, but I want o know whether it is possible for me to put some time settings in my modem+router so that it switches off at a particular time or something like that.Then when I get up next morning, start using it again. I don't want to keep my router on after it's not needed. Also I don't wanna keep it vulnerable after it's not needed, even though I have set it up quite securely. ( WPA2 PSK, and MAC filtering)

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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 Wireless :: WLC5508 Link To Switch Core Down?

May 16, 2012

I tried to implement WLC5508 in my network but when I came to connect it to the switch core which is a Catalyst 4000 the link didn't get up. This switch module is a fastethernet, I wonder if that might be the problem since I also tried connecting my laptop to the WLC and the link got up.
 
If that might be the cause, is it possible to get WLC to 100 Mbps?

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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 WAN :: Core Switch 4507R Suddenly Restarted

Apr 20, 2012

My CORE Switch 4507R Suddenly restarted (Powe is good) , and gets the business down for 30 Mts,my boss came to me and asks why it has restarted , what is the root cause of this restart, i dont have any syslog or NMS enabled in my  network to be informed

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Cisco WAN :: DHCP Configuration On Core Switch 4507R

Jul 9, 2011

DHCP configuration on CISCO core switch 4507R switch.With one vlan and multipul vlan both configuration using any ip address range.

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Cisco Security :: WS-C3560X-24 Needs To Be Connected With Another Core Switch

Dec 5, 2012

I got new task moving WS-3560X24 port layer 3 core switch from one branch to be moved  to my  branch and connect WS3560 layer 3 core switch my site network. Both core switch has got 3-4 cisco 2960 switch underneath and lots of vlan offcourse. I am thinking about creating etherchannel between these two switch.

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L3 Core Switch VLAN Traffic Monitoring With IPS

Jun 9, 2012

I have a L3 core switch with multiple VLANs setup. Is there a way to place an IPS so as to monitor the traffic passing between, lets say, VLANS 1-3 and VLANs 4-10?

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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 :: Flash File Location In 6500 Core Switch?

Apr 18, 2013

what is location of flash file in 6500 Series switch and how can we take back of IOS image for 6500 series.

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Cisco Application :: Configure New ACE 30 Module On Top Of 6500 Core Switch

Jan 12, 2013

i have configure new ACE 30 module on top of 6500 core switch , the issues am facing whenver i want to access to https://ACE_IP and after i enter the user name and the password , it's forwared me to the follwoing page: is there anything should i configure to avoid this page ?

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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 WAN :: Windows 7 Cannot Obtain An IP Address From 4503 Core Switch

Dec 14, 2011

we have Core-Siwtch 4503 in the main building which is connected to another Core 4503-E in another building ,, now our PCs connected to the 4503-E ,,, any XP M/C can  pick an Dhcp-ip but and M/C run Win.7 Cannot !!

action taken :
 
1st we try to connect our win 7 pc in the node which was connected to xp M/C ,, and it didnot take ip from the DHCP . ,, 2
 
2nd we ensure from the core-switch configuration and its normal with no mistake
 
3rd trying to use tool from Microsoft Fix-it Center whih name is ( Microsoftfixit 50475 ) which is just .msi file but the problem face us is that this tool donnot accept to run on win 7 cause its made for vista .
 
4th after some researchs we notic that there is some modifications have to be performed on registery by disabling the dhcp broadcast flag we did it but nothing change yet
 
5th now we are waiting to perform another action which is Disable the IP Helper service in win 7

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Cisco :: LMS 4.0 Manually Added Core 3750 Switch Into System

Jun 25, 2011

I am doing an evaluation of LMS 4.0.  I have loaded the system on Windows and manually added my core 3750 switch into the system.  Device availability is showing the device as available.  However, the other pollers like link utilization, error count, etc. all show that there is no data.  When I go into the poller config, the pollers for link utilization and errors show 0 devices associated and a status of "instance not found".  The CPU and availability pollers show active with my one device added.  I have verified the credentials and if I go into Inventory -> Port and module and select my 3750 I do get a list of all the interfaces and the descriptions so LMS is connecting to the switch and pulling data. 
 
So how do I get the pollers for link utilization and errors to start populating data?
 
Second question, during install I did configure the software update section and it said there was an LMS 4.0.1 available which I told it to download.  Now I have a psu_download directory and some more directories like cm, cmf, etc. but I don't see any file on what to do with them.  What do I need to do to install the new package files that were downlaoded to psu_download?

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Jul 15, 2012

At our site we have a 4510 core switch and 3750x switches in our IDFs. The 3750 switches are connected to the core via DOT1Q trunks in a server client setup. We are putting in an Informacast/Berbee server witch will send pages and text to the cisco phones. We also have 1 3750 switch connecting to the core via a layer 3 port channel. If we put the Informacast server on the phones vlan would I just need to enable ip pim sparse-dense mode on that vlan only and enable multicast routing, ip multicast routing?

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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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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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Cisco WAN :: 6500 / 6513E - Filtering Core Switch Ports?

Apr 15, 2013

Nowadays i have a project @ my work , the project consists of replacing our Cisco 6500 Core Switch with two other Core switches 6513E .
 
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Apr 30, 2011

Is this a good idea to connect access layer directly to core layer with fiber and omit the distribution layer?

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