10-10-2012 08:04 AM - edited 03-04-2019 05:49 PM
Hi All.
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.
Does anybody know what command to use for that or why I cannot use the above command?
Thanks in advance.
Regards
Solved! Go to Solution.
11-12-2012 04:09 AM
I suppose you are running on 1841 IPbase image. It seems does not support IP SLA.
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_bulletin0900aecd802edc81.html
Please rate helpful posts.
11-12-2012 04:32 AM
If you have valid service contract with Cisco you can download it from cisco.com.
Otherwise you need to buy a new license if I'm not wrong.
Contact with Cisco partner.
Software upgrade procedure
http://www.cisco.com/en/US/products/ps5855/products_tech_note09186a00801fc986.shtml
10-10-2012 08:39 AM
As I know, that's not directly possible, because the ADSL WAN is a back-up from the main line.
Anyway, if you want to split the destination, may be you can use metrics to make a manual balance (thru ip route commands).
Cheers!
10-10-2012 08:58 AM
Hi Alex.
Thanks for your reply.
At the moment I'm using this config:
track 1 interface FastEthernet0/0 ip routing
ip route 0.0.0.0 0.0.0.0 188.1.2.3 track 1
ip route 0.0.0.0 0.0.0.0 Dialer0 10
As you can see all traffic goes to Fa0/0 port and Dialer0 is used as backup, right?
When I remove a distance 10 then Dialer0 becomes static default route and all traffic goes to it, but I prefer to use Fa0/0 or both of them.
So I'm not sure how to setup them equal and how to test that.
Cheers,
10-10-2012 09:50 AM
Hi,
track 1 ip sla 1
ip route 0.0.0.0 0.0.0.0 x.x.x.x track 1
ip route 0.0.0.0 0.0.0.0 x.x.x.x
By default load-sharing is done by CEF so it is per src-dst IP pair.
in IP sla configure source-interface so ping tests will always be sourced via primary path.
Regards.
Alain
Don't forget to rate helpful posts.
11-12-2012 01:39 AM
Thanks to everybody for your replies.
I've been looking after that connection for last few weeks and I don't really like how it works.
If I put "ip routes" equal then ATM interface (ADSL) is loaded more then Fa0/0 interface (Cabel) and as we monitor both interfaces using SNMP monitoring the cabel connection after a while start showhing drops (it maybe a packet lost). And customer complaints about speed.
Then I add administrative distance to ADSL connection to 2, and speed is better but there is no load-balancing, right?
Is it possible to setup as 1st interface for 70% of traffic and 2nd for 30%. Or the only way is to assign a specific traffic going through specific interface.
Couldn't find any docs explaining that.
Thanks in advance.
11-12-2012 01:50 AM
Hi,
Have a look on these links
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080950834.shtml
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a00808d2b72.shtml
and this one very useful for your situation
https://puck.nether.net/pipermail/cisco-nsp/2011-July/079665.html
https://supportforums.cisco.com/docs/DOC-8313
please rate helpful posts.
Message was edited by: Abzal Sembay
11-12-2012 03:58 AM
Hi.
Yes, I was checking those articles before, but some commands don't exist in router
"track 123 rtr 1 reachability"
The config I use is the same as in first article, but my ADSL connection is loaded more (reliability 255/255, txload 1/255, rxload 226/255) then Cable connection (reliability 255/255, txload 1/255, rxload 13/255), but I prefer otherwise, as cable connection is faster.
And other articles are build on:
track 10 rtr 1 reachability
delay down 1 up 1
Which I can't use.
Cheers,
11-12-2012 04:09 AM
I suppose you are running on 1841 IPbase image. It seems does not support IP SLA.
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_bulletin0900aecd802edc81.html
Please rate helpful posts.
11-12-2012 04:20 AM
Yes, it's:
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.4(15)T7, RELEASE SOFTWARE (fc3)
Can I just upgrade a software or I need to buy a new feature license then?
Regards,
11-12-2012 04:32 AM
If you have valid service contract with Cisco you can download it from cisco.com.
Otherwise you need to buy a new license if I'm not wrong.
Contact with Cisco partner.
Software upgrade procedure
http://www.cisco.com/en/US/products/ps5855/products_tech_note09186a00801fc986.shtml
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