Cisco Switching/Routing :: 1841 Dual ISP Fail Over Using Track

Jan 9, 2012

we are trying to configure 1841 with dual Internet connection with failover using track.

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Cisco WAN :: EHWIC-3G-HSPA+7 Fail Over Between Two Connections Are Handled By IP SLA Echo And Track

Dec 3, 2012

I am having problems with these types of 3G cards(EHWIC-3G-HSPA+7) from Cisco.We are using them on ships where we have a SAT connection and the 3G connection. Fail over between the two connections are handled by an IP SLA echo and a track on the cellular interface, towards an public IP where we have configured a static route to via the Cellular interface.
 
Once configured the connection comes up fine, the VPN tunnels comes up and all is good.But after some time the connection dies, the track goes down because no data goes through.a sh cell 0/0/0 all however say that the profile is active.

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Cisco Firewall :: ASA 5505 - Dual ISP SLA Track With Primary PPOE Secondary DHCP

Aug 25, 2011

Cisco ASA 5505 Security Plus 1 link with PPOE dialup for internet access
 
desirable situation: Primary link with a PPOE dialup Secondary Link with DHCP address Asignment
 
Problem: i want to configure Dual ISP Failover modus, but the problem exist when i configure  the ip sla syntax it looks good in the running config. but after a reload the secondary line becomes primary
 
It looks like the ppoe client authentication is busy when the ip sla tracking mechanism becomes active. can i tweak the settings that the ip sla tracking mechanism starts later?
 
What i the correct config for Dual ISP setup with primary PPOE and secondary DHCP

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Cisco Switching/Routing :: Track IP Routes On 6509?

Jul 2, 2012

We have a need to track specifc subnets on our two 6509s, running IOS version 12.2(18)SXF16. Basically, we want to do this:
 
track 1 192.168.0.0 255.255.255.252 reachability
track 2 192.168.1.0 255.255.255.252 reachability
 
However, the 6509 IOS only provides the option to track an interface. Is this a feature that's available in later IOS versions?
 
Is there another way to track these routes? The subnets are used for WAN links at a HQ and DR site and we are doing a specific PBR (sending all http/https traffic) using these subnets. If that WAN link goes down, we want to be able to utilize a backup WAN link to support that traffic.

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Cisco Switching/Routing :: Track Down An Application Response

Nov 28, 2012

I am trying to track down an application response problem on my network (the traffic goes through a 6509 and FWSM).I noticed in one of my WireShark captures, that the client at times seems to be sending ackowledgements (ACKs) over and over again, and I'm not sure if this indicates a problem/ retransmission.
 
 Basically, a web server is delivering images to the client, but end users are complaining of slowness and freezes.Wire-Shark has not flagged this as a problem (comes up "green")

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Cisco Switching/Routing :: Nexus 5596UP Dual-sided VPC Design With Dual Connected

Feb 19, 2012

I would like to make a design with 4 Nexus 5596UP. 2 of them equipped with Layer 3 Expansion Module  so they can serve as core layer and the other 2 Nexus used as Layer 2 for aggregation server layer.The 2 Nexus in the core layer will run HSRP and will peer with ISP via BGP for Internet connection The 2 Nexus in the aggregation layer will be configured as layer 2 device and have FEX and switches connected to them.What I am ensure of is how the vpc and port-channel configuration should look like between the 4 nexus. What I was thinking is to run vpc between the 2 Nexus in the aggregation layer and between the 2 Nexus in the core layer. Than I was thinking of connecting each Nexus in the aggragtion layer to both Nexus in the core layer using port-channel and vice-versa.

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Cisco Switching/Routing :: IP SLA On 3750 Switch To Track Static Route?

Oct 15, 2012

i wonder if i can make a backup static route for an existing link over wan using the below diagram
 
the Core Switch type is 3750 in both sides i`m using only static routing for  all destination like
 
Core1:
ip route 192.168.8.0 255.255.255.0 172.10.10.30
 
Core2:
ip route 172.17.200.0 255.255.255.0 192.168.100.105
 
requirements is to track the reachibility for the core ip address from both sides & change the routing automatically to the backup tunnel line

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Cisco WAN :: Dual Internet Fail Over On 1812 Router?

Dec 27, 2010

I am simply trying to configure fail over configuration in my 1812 router. I have done some configuration on my router but my configuration is not working as i want. My router does not goes to secondary route until i unplug the primary interface cable on my router. when i unplug the primary cable it goes to secondary route and then i plug back primary cable the router come back to primary link.so my configuration is working when my primary gateway down but it is not working when internet goes down from isp end. i have attached my running configuration.

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Cisco WAN :: 1841 / All Sessions Simultaneously Fail EIGRP And Restored Within Seconds

Nov 18, 2012

currently on my Cisco 1841 router I have configured EIGRP protocol, my problem is that all sessions simultaneously fail EIGRP and restored within seconds, all come from different sources. The IOS version is 12.4 (25g).

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Cisco WAN :: 1921 Dual Links Failover And Fail Back

Sep 19, 2012

I have a 1921 router with two wan interface configured, one is primary and the other is standby or backup in case the primary goes down, I was able to configure links to failover from primary to backup once there primary is down, but how do I configure to make sure when primary is up it failbak to to it. [code]

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Cisco Firewall :: ASA 5510 Dual ISP Active / Standby Fail Over

Apr 2, 2013

I have a dual ISP, 1 primary and 1 secondary terminated on fa0 and fa2 on our ASA respectively. ASA was configured so that, when the primary fails, the secondary kicks in.  [code]
 
It was until yesterday that we experienced downtime on the primary ISP that the secondary doesn't do the fail-over. I have to manually configure the device to use the secondary ISP. Currently, I'm looking at maybe this has something to do with the licensing.We are currently using a Base License, should we be upgrading to Security Plus?

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TP-Link Dual-Band Wireless :: Wdr3500 Fail To Transfer File

May 13, 2013

Region : Others
Model : TL-WDR4300
Hardware Version : V1
Firmware Version :

wdr3500 problem with usb external hard drive when I try to transfer files from computer to usb on the router it'll work for small files like MP3. But files like MKV where they can be 1-2gb will cause a disconnect and fail to transfer the file. The whole drive would disconnect and windows will give an I/O error.

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Cisco Switching/Routing :: Web Login Fail With 3750

Jul 28, 2012

I can access to Cisco 3750 with SSH, but fail to login to web http with the same login.I am able to get the login prompt, the login error I get is "The server at level_15_access requires a username and password."Below is my switch config:username admin privilege 15 secret 5 $1$xsdfajiwuoeirlkajsd.

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Cisco Switching/Routing :: 4900 HSRP For LAN Fail-over

Jan 23, 2012

Planning to implement HSRP in layer 3 switch.

We have two numbers of Cisco 4900 ME Switches. Basically want LAN failover from these devices. There are about 400 users in our network. I have attached rough network topology for your reference(I am not good at Microsoft Visio). Need to know implementation of the HSRP in these switches. Two distribution switches(Cisco 4900 ME Switches) are connected to 4 Access switches and these are connected to the LAN.

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Cisco Switching/Routing :: Dup Packet Fail With WS-C4506-E

Dec 20, 2011

What the message below means?  It's from our WS-C4506-E log running Version 03.01.01.SG.
 
Dec 20 16:27:26.182: (Suppressed 851 times)Dup Packet Fail for Sw PortDec 20 2011 16:27:28.068 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet4/22, changed state to upDec 20 2011 16:27:29.070 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/22, changed state to upDec 20 2011 16:29:13.738 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/22, changed state to downDec 20 2011 16:29:14.738 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet4/22, changed state to downDec 20 16:42:37.173: (Suppressed 162 times)Dup Packet Fail for Sw PortDec 20 2011 16:42:39.071 UTC: %LINK-3-[Code]....

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Cisco Switching/Routing :: C6506-E / TestAclPermit Fail In WS-X6748-SFP?

Dec 7, 2011

in my C6506-E installed module WS-X6748-SFP with WS-F6700-DFC3BXL
 
last time a see errors:

18:42:49: %DIAG-SP-6-TEST_RUNNING: Module 3: Running TestAclPermit{ID=23} ...
18:42:51: %DIAG-SP-3-TEST_FAIL: Module 3: TestAclPermit{ID=23} has failed. Error code = 0x1
  23) TestAclPermit -------------------> F
 Current bootup diagnostic level: minimal
Module 3:
Overall Diagnostic Result for Module 3 : MINOR ERROR
Diagnostic level at card bootup: minimal

[code]...

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Cisco Switching/Routing :: C2969-48PST-L - PC Will Fail Authentication Intermittently

Jun 19, 2012

I have a c2969-48PST-L switch running IOS Version 12.2(55) SE. The switch is configured for 802.1x authentication. The radius server is a Cisco ACS 5.2. We are using PEAP and allowing EAP-TLS and EAP-MS-CHAPv2. Windows 7 PCs (HP Elitebooks) are using the "windows" supplicant and configured to 802.1x authentication is enabled using Microsoft Protected EAP (PEAP), we are not validating any certificates and the authentication method is Secured password (EAP-MSCHAP v2). What is occurring every so often is that the PC will fail authentication (intermittently) and the ACS shows the reason as being 5411 EAP session timeout. This is a pretty generic message according to TAC. The interesting part to me is the Authentication Method showing on the ACS when the authentication fails is simply PEAP. However, when it does not fail the Authenication Method is shown as PEAP (EAP-MSCHAPv2). We have the Cisco TAC looking at the ACS and they are saying the issue is the client not reponding to the request correctly from the switch.if the version of IOS softare on the switch maynot be handling the communication to the ACS correctly. I have wireshark traces of a successful authenication and unsuccessful one. There does seem to be any difference from the client side at all.

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Cisco Switching/Routing :: Router 2900 Fail After Power Outage

Apr 22, 2013

I recently copied a configuration from a router 2800 to a 2900. After a power outage no one can connect outside of the network through the new router. Before the outage all was fine. I put back the old router and all is fine which eliminates any cable or switch error. I have the router totally disconnect. I notice the configuration is in place.  My question is there any diagnostics that I can run to see if there is any hardware failure. It seems to boot up fine.

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Cisco Switching/Routing :: WS-C3750X-48T-S - Error On Default IOS / Authentication Fail

Feb 8, 2012

I am getting the below error on my new switch though I can’t find out A. why I am getting the error and obviously B. how to resolve said error as I need to ensure I am operating under the letter of the law and compliance.  The switch is a WS-C3750X-48T-S running C3750E-IPBASEK9-M, per my research IP base is the correct IOS for a T-S switch, the label on the outside of the switch matches the show ver (WS-C3750X-48T-S) so I know that IPBase is the right IOS for the hardware.  Could it be that I don’t have the license file installed? Below is what I get when I do a show license.  Lastly is there a place that I can find what IOS ships default with what switches, not version but type like c3750e-ipbasek9-mz.150-1.SE vs c3750e-ipbase-mz.150-1.SE
 
Error“%ILET-1-AUTHENTICATION_FAIL: This Switch may not have been manufactured by Cisco or with Cisco's authorization.  This product may contain software that was copied in violation of Cisco's license terms.  If your use of this product is the cause of a support issue, Cisco may deny operation of the product, support under your warranty or under a Cisco technical support program such as Smartnet.  Please contact Cisco's Technical Assistance Center for more information.”

[code].....

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Cisco VPN :: 1841 / Dual Wan / VTI Between Two Offices?

May 16, 2012

We have two offices with two 1841 routers. Each office have two wan links (one ADSL with dialer, one SDSL) with fixed IP.The adsl link is the default route with failover.There is only one VTI working properly with the config below (the adsl one). If I remove the route "ip route 0.0.0.0 0.0.0.0 dialer 1 track 1" both VTI are working properly, however all traffic is going to SDSL witch is not the behaviour we would like to get.

get both VTI working with default route to ADSL link ?

------------------------------------------------
track 1 ip sla 1 reachability
delay down 1 up 1
!
!
crypto isakmp policy 1
encr aes

[code]....

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Cisco Switching/Routing :: 7606 Sup720 With MSCF / Upgrade To 122-33.SRE6 Fail?

Mar 25, 2012

I faced with problem while i was attemping to upgrade CISCO7606 (R7000) from 12.2(33)SRE1 to 12.2(33)SRE6.
   
rommon 2 > boot c7600s72033-advipservices-mz.122-33.SRE6.bin
Loading image, please wait ...  
Invalid device specified
Booting from default device  
Initializing ATA monitor library...
string is bootdisk:c7600s72033-advipservices-mz.122-33.SRE1.bin

[code].....

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Cisco WAN :: Simultaneous Dual Wan Access With Nat 1841

Mar 25, 2012

I have a 1841 router with two wan access from two different ISP:throught dialer with fixed ip obtained from dhcp - ATM interface,thought fastethernet 0/1 with fixed ip and a specific gateway - can be use for Internet traffic if dialer is down.I can't manage to make them accessible at the same time (ping and ssh).In a second time I would like to have a VPN client access on one wan and site to site VPN on the other, instead of having the two on one wan.

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Cisco WAN :: 1841 Router With Dual WAN Load Balancing

Oct 9, 2012

We've got a 1841 router with dual-WAN connection, one is Cable and it goes to Fa0/0, another one is ADSL2+ and it goes to WIC-ADSL card.I'm trying to configure a load-balancing and failover using per-packet or per-destination connection.I can configure "ip sla" for both connections pinging 2 different DNS IPs of 2 ISPs. But I can't configure command "track 1 rtr 1 reachability" and "track 2 rtr 2 reachability". There is no "rtr" allowed to type there. And all examples shows that command for load-balancing. What command to use for that or why I cannot use the above command?

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Cisco WAN :: 1841 / Dual WAN With CEF Load Balancing And VPN Client Error

May 7, 2012

I have a Cisco 1841 router connected to two different lines  (same ISP) and I would like to load balance between them. I think I have  achieved this point, but the problem is that remote VPNs do not work (only from Dialer1).This is my diagram:
 
ISP1----ISP Router----------Fa0/1 ROUTER 1841
----------Fa0/0 LAN
ISP2 ----------------pppoe Dialer1 ROUTER 1841
 
I  have tried to redirect all my vpn traffic through the Dialer1 with PBR, but it does not work.

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Cisco VPN :: 1811 / 1841 - Dual-Hub DMVPN With PKI And Subject-name Don't Work

Sep 25, 2011

I have a Dual-Hub DMVPN with PKI dep[oyment infrastructure and with 2 Hub on Cisco 1811 and Spokes on Cisco 1841. When I enter the 'subject-name' parameter (pki trustpoint configuration mode) on a Spoke routers, one of two Tunnel is up, but the second Tunnel is not up. ISAKMP-negotiation select the rsa-sig-mode is correctly. If I select pre-shared-mode or if i remove 'subject-name' from Spokes, DMVPN work is fine!
 
In what there can be a problem?
 
Configuration example:
 
1. HUB:
crypto pki trustpoint TRUSTPOINT-CA1
enrollment mode ra
enrollment url http://.../certsrv/mscep/mscep.dll
password ...
[ code]....

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Cisco Switching/Routing :: Simple Routing Not Being Performed 1841

Feb 6, 2012

I'm just getting started with cisco kit so you will have to bare with me.I have a cisco 1841.i have a very wierd issue of routing...i cannot ping and browse through this.

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Cisco Switching/Routing :: 1841 / Routing Through Sub-interfaces Fails?

May 31, 2013

I have a problem accessing my wireless router through VLAN sub-interface on my Cisco 1841 router. My hardware:
 
Cisco Catalyst 2960 switch (192.168.100.4 /24)
Cisco Catalyst 3550 switch (192.168.100.6 /24)
Cisco 1841 router (192.168.100.7 /24)
Asus RT N66U wireless router (192.168.100.2 /24)
 
Here's my network topology:
 
I have two VLANs - 10 and 20. 2 DHCP pools are configured on 2 1841's interfaces - 192.168.1.0 /25 and 192.168.1.128/26 with default router sitting on 192.168.1.1 and 192.168.1.129 respectively. No issues with obtaining IP address from any of those pools.Laptop connects to L3 3550 switch (switchport access vlan 10), which, in turn, connects to 1841 router through trunk (with VLANs 10 and 20 allowed).3550 is connected to 2960 through trunk with VLANs 10 and 20 allowed.Wireless router is connected to 2960.I can successfully ping my wireless router and outside world from 1841 from fa0/1 interface, but not from fa0/1.10 or fa0/1.20 sub-interfaces -  all packets got dropped. My laptop can obtain IP from both pools (depending on port I connect it to), but can't ping my wireless router and anything beyond it.
 
I attach my configs:Cisco Catalyst 3550:interface FastEthernet0/1 switchport trunk encapsulation dot1q switchport mode trunk switchport port-security mac-address sticky speed 100!interface FastEthernet0/2 switchport trunk encapsulation dot1q switchport mode trunk!interface FastEthernet0/3 switchport access vlan 10 switchport mode access!interface FastEthernet0/4 switchport access vlan 20 switchport mode access!Cisco 1841:
 
ip dhcp pool Vlan10DHCP network 192.168.1.0 255.255.255.128 default-router 192.168.1.1 dns-server 208.67.220.220 domain-name home.local
!ip dhcp pool Vlan20DHCP network 192.168.1.128 255.255.255.192 default-router 192.168.1.129 dns-server 208.67.220.220 lease 0 12
interface FastEthernet0/1 ip address 192.168.100.7 255.255.255.0 duplex auto speed auto!interface FastEthernet0/1.10 description VLAN10 Sub Interface encapsulation dot1Q 10 ip address 192.168.1.1 255.255.255.128!interface FastEthernet0/1.20 description VLAN20 Sub Interface encapsulation dot1Q 20 ip address 192.168.1.129 255.255.255.192!
Routing table on 1841:

[code]....

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Cisco Switching/Routing :: 1841 - Static NAT

Sep 2, 2012

I have a Cisco 1841 router at home with version 12.4(13r)T advanced ip services. The setup is extremely simple:
 
1) PPPOE dialer to my service provider over ADSL
2) Nat overload on the dialer interface.
3) 2 V LAN s one for home network (wired) and one for wireless both v LAN's are connected through interface v LAN s respectively.
 
My problem is when I configure static NAT to map RDP or any other protocol to inside hosts this does n`t work.
 "
ip nat source static tcp 192.168.20.3 2222 interface Dialer1 2222
ip nat source static tcp 192.168.20.3 3389 xx.xx.xx.xx 3389 extendable
ip nat inside source list 20 interface Dialer1 overload


When I open wire shark and sniff the traffic on home computer which is the one I`m trying to reach I can't see any traffic. And While performing Nat debugging I am also not able to see traffic going to that port (for example 3389).

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Cisco Switching/Routing :: 1841 - Using NAT To Expose Certain IPs?

Nov 16, 2011

I've got an 1841 router and am using NAT to expose certain IPs and ports to the outside world so that external users can see internal resources (namely, web sites).  However, I can't seem to get it running such that I can visit the external IP address from inside the network and get the router to turn the request around so that it is redirected back inside the network.  Shouldn't this be possible?  Our previous router (a non-Cisco) was able to do this, but I can't seem to get the new one to do it.
 
A couple of key config lines:
interface FastEthernet0/0
ip address a.b.c.178 255.255.255.240

[Code].....

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Cisco Switching/Routing :: Connection Between 1841 And Linksys?

Apr 9, 2013

I tried to connect a 1841 to a Linksys with a static route. I am able to ping from a computer in the 1841 to a computer in the linksys network, but I can't ping from a computer in the Linksys network to a computer in the 1841 network?

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Cisco Switching/Routing :: 1841 Static Nat Mapping

Jan 5, 2013

I guess i am just getting old and forgot how this works, or i have an IOS load with an undocumented feature in it.A customer of ours wishes to have their exchange server appear to the outside world on a seperate IP address as their public pool address is.in the past this has not been an issue, however in the current configuration we are unable to get the source address to appear per the NAT statement it always sources on the overloaded IP.   below is the relevant NAT config,  am i missing something, or have i hit a IOS feature? [code] There is a 45% chance i have forgotten everything i learned on the NOC desk and a 50% chance that it is somethine really stupid and 5% IOS is broken

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Cisco Switching/Routing :: 1841 / Port Forwarding Via SSH?

May 2, 2012

I want to SSH into a Cisco 1841 router and depending on the suffix added to the SSH (i.e ssh myrouter.myroute.com 2002), would like it to forward this request to a terminal server.Can this be done?  If so, how does one accomplish this?  I have done something similar with RDP but I was not sure about SSH.

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Cisco Switching/Routing :: What Is The Command To Shutdown 1841

Oct 28, 2012

What is the command to shutdown a cisco 1841 (say, to add a module)? I know how to reload / reboot, but does not seem to find any command with an obvious name.

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