Cisco WAN :: 1841 / Router ISP Failover Feature - IP SLA
Feb 13, 2012
I got a simple office: one flat LAN, one single 1841 router and 2 ISPs.LAN is 10.10.20.0/24 and is connected to a port on an HWIC card I installed in the 1841. Then FA0/0 connects to ISP1 and FA0/1 connects to ISP2.
Everything is fine except that I am having some issues with the Failover feature. Currently, I am using Object Tracking with SLAs. I am pinging 2 hosts located on the internet and then I have an SLA OR statement which basically say if ANY of the 2 objects are unreachable, DO NOT trigger a failover to ISP2. If in the case that BOTH objects become unreachable, then DO trigger a failover. It works like a charm.
The problems:Any internet hiccup obviously makes the router activate the tracks and redirects all traffic to ISP2. However, 99% of the time ISP1 is back online within minutes or seconds, so after 180 seconds the traffic gets redirected back to ISP1. So in essence, the customer suffers 2 interruptions.
Besides internet hiccups, I have also noticed that every time any user tries to copy a big file accross the tunnel (the 1841 has site to site tunnels with 2 branches) the tracks go crazy and the objects become unreachable so a failover is triggered. We were breaking our heads and fighting with the ISP1 provider because every time this happened, we called them but every time they kept telling us that their line was UP and running without any problems. So after careful investigation, I do admit they were right.... it is not so much that the ISP1 experiences hiccups, it is actually the fact that users putting heavy load into the router are causing it to have its track to stop reaching the objects.
Lately we have been comsidering an upgrade in our organization involving a 1921 router. The main role it will play is a load balancer/failover between 2 connections from 2 different ISPs. what additions are required to be added to this piece of equipment to make the configuration work. Im researching the matter now and it seems an extra card whould be purchased in addition to the router. Also, i cant seem to find much information on the available licenses to go with the router. will i need a special license to utilize the balancer/failover feature? (ip base, data, SEC).
I am going to design one network. I had queries with this design.Let me explain scenario first( it was attached below).I have two sites, Site-A and Site-B, repectively.
In site-A i have one Cisco 1841 router, one Cisco ASA 5510 firewall and One cisco 3560 layer 3 switch. in site-B i have one Cisco 1841 router, one Cisco ASA 5505 firewall and One Cisco 3560 layer 3 switch.
From ISP side
I have point-to-point leased line between sites A and B. And both sites have internet connectivity from another ISP.
I planned to terminate leased line in cisco 1841 router in both branches for branch to branch connectivity.
I will configure site to site VPN between two sites, A and B.
Here my query was i want make VPN as failover connectivity if leased line fails. In both the cases, i need internet to the inside users in both sides.
Summary requirement:Leased line is Primary and VPN is Back-up, if leased line fails. In both cases internet is needed to inside users.
I have Cisco 2651XM and currently running old IOS c2600-is-mz.123-26.bin (IP PLUS) which I used the NAT protocol. I was wondering can I use IP-BASE on this router and I am not sure if this feature set has NAT protocol.
I'm just wondering if there is any documentation that confirms if the 2 built-in Gigabit ports on a Cisco 2851 router support (or otherwise) auto-mdix.I can find information for the modules but not the 2 built-in ports.
Me to a 2951 router with fireawall featureset. Ive begun to move the ACLs that where in the pix. However some of the rules are allowed to be typed in bur when i look at the ACL afterwards they are not what i typed in.
I have a 2911 router with 15.1(4) Ios Version. I need to enable the evaluation sna feature but when I try to enter the command "license feature snasw" but I get an error, the command "License feature" does not exist.
Cisco Router 2851 connected with one ISP using 2 serials. the case is :
1)s0/0/1.1 is the only utilized and s0/0/0.1 utilization is zero. 2)when shutting down s0/0/1.1 : the other ,not utalized, link work perfect and forward all the traffic.
Attached the configuration file with output of show interfaces command.
I have an E900 connected to my LAN acting as a wireless access point (router functions disabled). Can I use the DDNS feature of the router in this configuration? I attempt and get ‘No Internet Connection’.
I am trying to connect to the internet using the PPPoE feature of the router but the router configuration is not successful. Says something like "WAN connection not successful". I have supplied the correct username and password. The connection is ok in my laptop if i directly connect my laptop to the Ethernet port of the modem without the router. Is this a sharing problem from the ISP?
I switched from comcast to att uverse. I was happy about the guest-access feature of E3000 when using the comcast, where I can directly connect my e3000 to the modem (basically you can see two network, one is XXX, the other is XXX-guest). However, the ATT uverse has a gateway that combines the modem and router together, in order to use my e3000 instead of the built-in router of the gateway, I have done a LAN-to-LAN connection and I can access internet without any problem. But in this case, I can not enable my guest-access feature. When I use Cisco Connect to set up e3000, it says "cannot connect to your router". how to set up the guess-access feature of e3000 when using ATT uverse.
i have a Linksys modem BEFSR81 v.3 and am trying to reset my wifi password for secure connection. When i log into the the admin page, to my surprise, I could not find the security feature to create WPA or WEP password. i'm stumped. This has never occurred to me before on this modem.
I'd like to configure HA between an ISP router and a firewall ASA like shown in the document. I was thinking about HSRP but can I use HSRP between a router and a firewall?Another information.I have 1 asa 5520 on my site connected to an ISP 1, and a second asa 5520 at a second ISP's datacenter. My aim is that if the 2nd ISP is not available, all trafic go through the asa on site and to the first ISP.
All- we have a client that has a data center in Boston and a DR in New York with more than 10 site-to-site VPN tunnels. Each remote site runs IPSec with GRE tunnel with BGP connected to the Data Center in Boston. The client requests to build the failover VPN router at DR in New York, and between New York and Boston, there is a MPLS via eBGP.
I am attaching the network diagram. Should I run the same AS 65003 on the failover VPN router 2 as the router 3 since the router 2 and 3 are VPN terminated end points? or should I run the different AS than the AS 65003?
I have been given a task, where I need to create a failover setup from a 1800 Cisco router to a LAN network 2 hobs away (see topology).The reason I have been given this task is because the wireless links are not so realiably, but necessary.I'm thinking of doing this failover task with IP SLA on the routers fiber 1 and fiber 2 link, so when/if one off the links goes down, it instantly chooses the other link.I have also been thinking about implementing STP instead, and replace the router with a switch, but i'm not sure exactly how to implement it. Unfortunately I'm not able to test anything, as we are still waiting for the fiber lines, but I want to be prepared as much as possible.
Leased line is between dammam to dubai and the dammam office is getting internet from dubai.The ip address of Dammam office is class A (Public IP) x.x.x.x and for dubai it is y.y.y.y which we are using as proxy for accessing internet.I purchase the local DSL direct line connection through cable from Local Provider and this ip address range is 192.168.1.0 - 192.168.1.254.Is it possible to use the DSL line as failover, so if one line goes down the user should remove proxy and can use local internet.The router which is using is cisco 1800.
I believe that failover is possible, 100%, but would like to know how I can do it and requesting for sharing more inputs about failover in this case.
Currently I'm looking for a way to failover our internet connection from one site to another site over our MPLS line, should that internet connection go down.
My layout: Internet > Cable internet modem (Site B) > ASA 5510 (Site B) > 2821 Router (Site B) > MPLS Line > 2821 Router (Site A) > ASA5510 (Site A) > ISP provider internet router (Site A) > Internet
Facts:Site B is the one with the internet issues.The MPLS line is routed using BGP. [URL]
I am looking for the procedure of the router 3900 series failover. I have got two 3900 series router with the same ISO and other interface cards. What are the main things that I should watch ? Does the standby router takes the same ip of active router if the active router fails ? How should I configure it.
I wanted to configure failover internet between two routers Cisco 3800 Series. Each router is connected to an ISP. I have configured HSRP protocol on my interfaces and my HSRP configuration works well. I want to configure my routers to switch my internet traffic in case of failure. For example,if the first ISP internet connection fails, traffic will switch at the second ISP. I want to know how I should proceed to do this.
configure a router 1812 as failover, I walk with fixed ip internet link in Fe0 (need to determine the mac) and a dynamic ip link in FE1, other ports with a single vlan dhcp 172.20.16.1
I managed to do DHCP, connect to internet, to make nat vlan. But I could not do failover and load balance neither.
I have 2 cisco 1841 routers the one is connected to my local network and the other is the stub router and it only has 2 fastethernet interfaces. fao/1 connected to the local network and fa0/0 connected to the internet and to the other router. How can i configure NAT on the fa0/0 which is sharing the internet and local network
1841 & 3845 router. We send 30 GB data on 100 Mbps link. First time we use 3845 router for sending the data and 47 Min are required to complete the data, during this link utilization was 100%. After that we send same data through 1841 router & 46 Min are required for the same. Only difference in data transfer is CPU Utilization of 1841 router goes 30% & 5 % of 3845 router Can we use 1841 router instead of 3845 router ? .
I have got a cisco 1841 router. I need to do many nat. I have got a lots of virtual interface on this router. How many nat inside and outside does it supports ? Can I do more than one nat insdie and outside in different virual interfaces on the same single router.
A client was having some email issue and was requested to change the 1841's LAN and WAN interface MTU to 1400 bytes. i've used 'mtu' command but was rejected and got an error like to one attached. so i used 'ip mtu' instead to make the change.
What's the difference between the 2 commands and if this would achieve the said change. I've checked using the show interface it's still showing MTU of 1500 bytes.
I m trying to make the vpn session using m GRE tunnel between cisco 891/k9 and 1841 router.. there is the fixed ip add with the 1841 router, and another one doesnt have the static ip from the ISP, In this case, im going to use DMVPN, The problem is , after completing the configuration, the tunnel inteface of the 1841 router will be seen like this.
I want to connect my office network through anyconnect software and want to have the access of the whole network at my office, so that I can feel that I am at office. I have got 1841 router at my office. Is it possible to do VPN with anyconnect on 1841 router. Which IOS is required for SSL vpn ?
We have 1841 router (Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.4(9)T1, RELEASE SOFTWARE (fc2)), currently the router up and running on "c1841-advsecurityk9-mz.124-9.T1.bin" and when we try to upgrade the IOS with "c1841-advsecurityk9-mz.124-24.T7.bin" its not taking the new IOS. [code]
