Cisco Switching/Routing :: 3825 How To Configure A Broadband Backup For MPLS Circuit
Apr 16, 2013
I thought I saw a post/question in regards to "how to" configure a Broadband backup for a MPLS circuit.. What I am trying to do is use a cable/dsl/ broadband (secondary) connection as a backup to a MPLS circuit (primary). I have EIGRP and BGP configured on both the branch endpoint and the tunnel headend. The tunnel is used by the interface that connects to the secondary circuit. The branch location router is a 1841 and the "headend" tunnel router is a 3825. I am wondering about the configuration/syntax of a "weight" or static route that can be used to have data flow over the tunnel when the MPLS circuit goes down - and then switch back to the MPLS circuit when it comes back on line.
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Jan 10, 2011
Imagine you have 5 sites, one router each site (2851 as CE) connected to MPLS network. All sites have max 3xT1.Requirement:In case CE router or circuit to MPLS fails in any of those sites, I need to provide backup circuit to reach MPLS network.
Proposal:Bring one Internet circuit to each of those sites and create DMVPN to every site.
Question:Let's say Site1-MPLS circuit goes donwn.
Then all traffic from Site1-MPLS should flow thru the IPSec tunnel to all other MPLS sites. Am I right that the traffic coming from Site1-MPLS will ingress via the 2851 CE routers, correct? Is this the typical design? How to accomplish this, I'd like to setup a lab to simulate it.
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Apr 17, 2012
how to configure the 2nd WAN port to support 4G/LTE connectivity that will serve as the backup circuit to the primary MPLS circuit?
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Jul 24, 2012
how to configure a backup route to the internet. My client has 2 ISP and basically they want to use 1 ISP and in case the ISP fails, use the other one as backup route to the internet.
The problem I’m facing is that each ISP is plugged to a dedicated ASA 5510, so 1 ISP in one firewall and 1 in the other. Both ASA are plugged to an internal network in a dedicated VLAN with a L3 switch and that L3 switch manages the internal network.
My question is, how can I tell my switch to use ASA1 to go out to the internet and in case the ASA 1 OR THE LINK TO INTERNET used by ASA 1 fails, use ASA 2? It would be great if I can send traffic to the internet thru both connections at the same time. Also, I know the ASA has High Availability configuration, but that applies only if both licenses in the devices are the same and I have a mismatch with the SVPN license, and also I don't know if with my current topology I can use the High Availability model, so I think I can’t use that option and the solution must be applied in the L3 switch, but I don’t know how to tell it to use ASA1 and if failure of the device or the outside interface plugged to ISP 1, then use ASA2. Besides, I would like to know how to optimize this config to do the switch between internet connections seamless to the users if possible (there are VoIP calls on this floor, so I don't want to drop the calls).
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Mar 21, 2013
We currently have 3* offices located in London, Reading and Oxford which have a (ISP) VPLS service to interconnect all sites.I am using RIPv2 for intersite routing between all offices. We plan on implementing a backup circuit at the Oxford office for resiliency.There are 2* Core 4500 Switches, Core 1 is uplinked to the Primary circuit and Core 2 will be uplinked to the Backup circuit.At the moment Core 2 learns all of its routes from Core 1.My question is, if the Primary circuit goes down, how do we get the Routing on the Core Switches to than point out of the backup circuit?
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Sep 16, 2012
I'm trying to configure scp for secure configuration backup. I've configured the SCP server with an account and password but, I keep getting the no such file or directory error
AP-C2R1C5-3750#sh run | b arch archive path scp://mchenry:PASSWORD@172.20.22.229//C:/Program_Files/OpenSSH/Cisco_Configs/Switch_Config
username mchenry privilege 15 password 7 XXXXXXXXXXXXXXXXXXXXX
ip scp server enable
Error: %scp: /C:/Program_Files/OpenSSH/Cisco_Configs/Switch_ConfigSep-17-16-04-44.172-1: No such file or di
SWITCH#ping 172.20.22.229 Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 172.20.22.229, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 33/33/34 ms
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Feb 18, 2013
Installation of 2 x 4 Mbps MPLS circuit on primary router (CISCO 2951) and 1 x 8 Mbps Ethernet link on secondary router (Cisco 2951). We have successfully implement the primary router with 2 x 4 Mbps MPLS circuit. Site is having two computer room CR1 and CR2 and distance between both room is 200mts. CR1 is having primary core router and primary core switch where the service provider terminated the new MPLS circuit and we have done the successful implementation. CR2 is having Secondary core router and secondary core switch where we needs to have the termination of Ethernet link but service provider has delivered the Ethernet link on the CR1 which is incorrect DMARC Location.
Both the computer rooms are connected via optical copper can we use that copper to connect the circuit on CR2, as per my understanding we can use the optical fiber to connect the wind circuit on secondary router on CR2 by using the media connector.
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Jul 10, 2012
I have a question regarding Circuit-speed WAN performance. I purchased a 1Gbps Internet Link and want to know what my max through put would be on that router.
The Data Sheet states 35Mbps, why buy this router if I can not utilize this 1gig circuit.
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Sep 4, 2011
I need a configuration example of MPLS with VPN as a backup Router cisco 2851
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May 14, 2013
I am designing a remote site that will have MPLS as primary and a site2site as backup, both connections on the same 2921 router. My problem is monitoring the connection status of the connections? Testing reachability to the MPLS router at the data center would allow bringing up the VPN, but once the VPN is up the data center router is reachable again. Is there a way to track reach ability through a specific interface?
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Feb 28, 2011
what is MPLS VPN and VPN over broadband. BSNL is providing VPN over broadband using MPLS.
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Jul 27, 2012
I have the task of replicating the router config on a 3825 router on a 3750 switch. Reason is we are taking out the router and replacing it with the switch to make use of the router for other functions.
Below is main part of the router config:
!
ip source-route
ip cef
!
!
multilink bundle-name authenticated
!
license udi pid CISCO3825 sn FCZxxxxxxx
!
vlan internal allocation policy ascending
[code].....
The 3750 switch I have runs C3750E-UNIVERSALK9-M, Version 12.2(55)SE3 on a LAN BASE license.
The first thing I have done is to order for a license upgrade to IP BASE which would give the support for OSPF routing.I do not see much of an issue with the Interface configs, however, I am not too sure about replicating the routing config on the switch.
My question is can I run the commands as shown for the OSPF routing on the switch? If not, can I get suggestions on how best to set this up on the switch?
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Apr 9, 2012
I have a 3825 router that I have setup with the following: [code]
Its on a trunked port to my 3750 switch. I am new to this compnay and havent changed it over to IP routing on the switch quite yet.Both Vlans are setup on the 3750 without an SVI. All hosts on VLAN 1 can ping both interfaces without issue.
If I put a host on the 172 VLAN it cannot ping anything on the router. If I put another host on the VLAN they can ping each other. If I put an SVI on switch the 172 VLAN hosts can ping the switch, but still not the router. ONce I put the SVI on the switch, it can no longer ping the router. I am giving the SVI ip 172.22.1.5/24.
I have verfied with TAC that the trunk is allowing the vlans to the router.
I have been working with TAC. They have asked me to update the code on the switch, but I think they are just punting. [code]
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Jul 17, 2012
I have a cisco 3825 router with two GE interfaces. GE0/0 is connected to a switch through ethernet cable. I have configured the GE0/0 interface with IP address. I have also configured static route for the local network. However, now I can only ping the GE0/0's own IP from the router. Here are the running-config:
hostname Router
!
boot-start-marker
boot-end-marker
!
!card type command needed for slot 2
enable secret 5 $1$4gxa$sykc0mcaxpCIrGc86i1ZE.
[code]...
The 10.1.52.1 is the current gateway on the 10.1.52.x LAN.
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Apr 23, 2013
Can the new Cat 3850 run MPLS ?
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Dec 16, 2012
configure, or enable voice over ip (voip) on my router cisco 3825, I have Ip phone 7905G and 7960.
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Jan 22, 2013
After formatting the CF, the router is able to see the flash without a problem. I copied files to the flash - still able to see the contents okay. The problem ia that if i restart the router with the new flash, i get this error:
Jan 22 17:44:12.454 MSK: %SYS-5-CONFIG_I: Configured from console by bt_admin on
vty0 (10.10.10.44)
Jan 22 17:45:41.847 MSK: %SYS-5-RELOAD: Reload requested by bt_admin on vty0 (1
0.10.10.44). Reload Reason: Reload Command.
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: [URL]
[code].....
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Dec 16, 2012
implement VOIP on my router 3825 I have Ip phone 7905G and 7960.
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Feb 4, 2012
I have a Cisco 3825 router with a sfp module .(multi mode Cisco sfp ) connected to a Alcatel switch with fiberxon sfp. On a Cisco router the sfp card is been recognized and is seen when i used " show ip int brief " or show inventory commands. However the line protocol is down.
is their any compatibility issue with one side Cisco sfp and other side fiberxon sfp ? we have tested Cisco sfp -------Cisco sfp works fiberxon ----------------fiberxon works .
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Feb 22, 2010
I have 2*3825 routers configured with GLBP, but traffic is moving only with one router it only fallback on other router when the 1st router is isolated.
diagram: LAN=======>ASA(Routed mode with active-standby)======>one Cisco L2 switch========>2 *3825 Router
When trace route from LAN PC show that traffic is only taking via single router. LAN gateway is defined as ASA inside address and in ASA a default route pointed to GLBP address.
RTR1 config:
==========
int g0/0
ip address 1.1.1.2 255.255.255.0
glbp 1 ip 1.1.1.1
glbp 1 preemt
RTR2 config:
==========
int g0/0
ip address 1.1.1.3 255.255.255.0
glbp 1 ip 1.1.1.1
glbp 1 preemt
Is there any other config is required?
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Aug 9, 2009
Below is config on 3825. [code]
when the client get an ip from the DHCP works for same day and all of suddenly ip get released while user working and again it doesn't ip,if the same is assigned manually it works. [code]
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Sep 3, 2012
I was wondering if there was a way to disable the RPS in a 3825? When I do a Sho Env All I get the following;
Redundant Power System is present.
RPS is in standby state
Redundant Power System is present.
RPS is in standby state
How ever there is no RPS in the system. At least not that I know of. There is only one power supply.
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Dec 3, 2012
I have two Motorola MC9090's that will no longer connect through my MPLS back to coperate. They both stopped working at the exact same time yesterday.
They connect to a Cisco WAP321 that is connected to a Catylist 3750 that is connected to a Cisco 1921.
Each device can ping anything on that network. Both the switch and the router can ping the devices.
But if I try to ping a device on the coperate network the devices timeout.
The PC's connected to the switch via CAT5 have no issues connecting back to coperate (RDP to server)
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Apr 21, 2010
I'm going to start the evaluation of implementing the virtualization of our campus LAN using MPLS.We'll get many inter-VLAN routing domains per VRF on the same LAN infrastructure.The LAN infrastructure is based on C6500 implementing VSS.Do you have experience with this kind of setup?Any known/faced issue that might prevent the setup of MPLS on VSS enabled C6500?
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Oct 29, 2011
Does 2650 and 2620 support MPLS ? If yes what IOS version should i download?
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Jan 1, 2012
I have a 2921 router and want to use mpls feature. Right Now we are using c2900-universalk9-mz.SPA.151-4.M1 image but mpls static cross connect” is not working with this image. And will this image(c2900-universalk9-mz.SSA) be worked?
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Jun 26, 2012
I want to configure PAT on the router I have no configuration yet
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Jan 17, 2012
We have one 3825 router used as voice gateway. For redudancy, we want to connect it to two different switches which has STP and HSRP running. Can I create a port-channel with two Giga interfaces in 3825 and connect to two different switches? Should I configure port channel in switch with only one port in each port-channel? I know server can be connected to different switches with NIC teaming. I just want to mimic that kind of setup. I did one time for port-channel in 3825, but it was connected to a stacked 3750X. So it's different case now.
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Dec 11, 2012
I just ran into an interesting issue. VG Cisco 3825 crashes regularly with the following message in a crashinfo.
%ALIGN-1-FATAL: Illegal access to a low address 16:26:07 CET Tue Dec 11 2012
addr=0x0, pc=0x603EFF38z , ra=0xFFFFCC41z , sp=0x702E3C28
%ALIGN-1-FATAL: Illegal access to a low address 16:26:08 CET Tue Dec 11 2012
addr=0x0, pc=0x603EFF38z , ra=0xFFFFCC41z , sp=0x702E3C28
16:26:08 CET Tue Dec 11 2012: TLB (store) exception, CPU signal 10, PC = 0x603F32F8
Router: Cisco 3825
IOS: c3825-spservicesk9-mz.151-3.T3.bin
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Apr 17, 2012
I have a router cisco 3825, it is configured with netflow for monitoring traffic with WhatsUpGold, but I can't monitor this router I don't know what is the problem.Device: Router Cisco 3825 IOS: C3825-ADVENTERPRISEK9-M 12.4. [code]
I have a switch4500 12.2 and a router 2801 IOS 15.1 and this device work well with the WhatsUp but these devices have the same configuration.I see diferents ouputs when I use show ip flow export, this output is for a router that work well with WhatsUp. [code]
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Apr 30, 2012
I've studied and labeled out MPLS and MPLS VPNs several times. The situation I'm presented with is a little different from most of the case studies I've seen in my MPLS books. I've attached a diagram.
We have a IPsec site to site tunnel from our main HQ router to a Cisco ASA 5510 in the core network in the colo. This allows our HQ office to reach the private sub nets in our core without using a Cisco VPN client. The problem we are running into is that this seems to be putting undue strain on the Cisco 2811. I feel like the 2811 should be able to handle it but doing any kind of upload or download through the tunnel spikes the CPU/Interrupts and makes the router CLI basically stop responding until the traffic transfer is stopped or completed. During this time, certain Cisco SCCP phones on our Broad works platform cycle while the SIP phones on the same platform are OK. We are trying to alleviate the load on the 2811 by setting up a VRF from the HQ network to the private VRF used in the Core for private sub net communication. The problem I'm having is the the HQ also has some public traffic that I do not want to include in the VRFs and would like to have it travel through the P2P circuit we have and access the internet or other public devices through the core public IP Internet routing table.
The flow would be this:
-going to a public address use the public internet routing table
-going to private address in the 10.x.x.x or 172.x.x.x - use VRF to core Private network.
This is a little different of a set up from most of the VRF VPN examples I've seen. Most of those the CE devices is completely private. This is not the case at our HQ.
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Dec 27, 2011
We have the problem that MPLS labeled packets are not being processed on EHWIC-1GE-SFP-CU if L3PDU + Shim-Header exceeds 1500 bytes.When we move the config exactly to the on-board Interface Gi0/0 it works with put any problems. [code]
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Sep 11, 2012
I need to confirm internet access from remote network through MPLS cloud to another site. Let me explain. We have a MPLS network with Wind stream as listed in the visio drawing; site 1 has internet access through the Time-Warner cloud for all users. Site2 has internet access through the Wind stream MPLS router. Site three has no internet access, and only has LAN access layer2 through Windstream routers to Site1 for networks 192.168.0.0/24, 10.1.1.x/24. My question is can we give everyone at Site 3 internet access through the MPLS network down into Site 1 using the Time-Warner ISP cloud.
I placed routes on the Site 3 3750 stack IP route 192.168.50.x 255.255.255.0 to the interface of the MPLS router at site3, then at site 1 we have IP route 192.168.50.x 255.255.255.0 to the MPLS interface, and able to ping all anything on the 192.168.50.0 network. I added the IP route 0.0.0.0 0.0.0.0 192.168.50.x the MPLS router interface, we do not have internet access at Site 3 using Site 1 network.
I confirmed at Site 1 from the Cisco 3750 switch we can ping 4.2.2.2 = Google. How to confirm this will work and what’s required to complete this connection to give everyone at site 3 internet access through Site 1 Time-Warner.
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