Backup of lease line

Manojtanwar used Ask the Experts™
We have a lease line which is terminate on Cisco router 2811 and hosted a website on one of static ip of this pool like Problem occurred when sometime this lease line link down and my website down. We have another lease line from another ISO can I use this lease line as backup when first lease line down . Cisco router have one wan port where main lease line terminate and second port use as internal lan port for giving internal lan ip through dhcp. Second ISP static ip pool is different from first. How can I use second line as backup is any hardware required for this or any change required in my website name server or anything else
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Most Valuable Expert 2014
You need to put a dual WAN router in front of the web server, so that you only have a single default gateway.
Then use a web based load balancing service to manage the traffic inbound.
That could be something like a Kemp load balancer in Azure.

You could put both IP addresses in to DNS, but DNS has no service availability, so if one line was down, traffic would still be sent to the down connection by DNS.



SORRY command is this
rotocol [ip]: ip
Target IP address:
Repeat count [5]: 5
Datagram size [100]: 100
Timeout in seconds [2]: 2
Extended commands [n]: y
Source address or interface: fa0/1
% Invalid source. Must use IP address or full interface name without spaces (e.g
. Serial0/1)
Source address or interface:
Type of service [0]: 0
Set DF bit in IP header? [no]: no
Validate reply data? [no]: no
Data pattern [0xABCD]: 0xABCD
Loose, Strict, Record, Timestamp, Verbose[none]: NONE
% No such option - "NONE"Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]: N
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:
Packet sent with a source address of
Success rate is 0 percent (0/5)

still no answer
Most Valuable Expert 2014

I don't understand what that post has to do with the original question.
If you have two lines in to the network, then you need to use a dual WAN router. Otherwise you will be unable to connect on the second connection because a server can only have one default gateway configured at a time.


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