07-12-2010 02:42 AM - edited 03-04-2019 09:02 AM
Hi ,
I have a scenarion , R1------R2---( private cloud)----R3------R4
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Description --- 1)R1,R2 are at one site , R2 connects to private cloud.
2) R3,R4 are at another site , R3 connects to private cloud.
3) R1 n R4 have back-up secondary high cost link connection.
Query -- R1 has default route towards R2 ( for internet and all destination of R4(site 2)) , also R1 have wireless slow link with R4.
i dont have access to R2. how can i route traffic for Site 2 destinations on R1 via wireless link If R2 losses its connection to cloud.
NOTE - i dont have access to R2 and there is no dynamic protocol running.
Thanks in Advance,
Mazhar.
Solved! Go to Solution.
07-12-2010 02:53 AM
hello ,
we can use cisco ip sla technology. use route track feature.
reference to , http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst4500/12.2/44sg/configuration/guide/swipsla.html
ip sla 1
.....
ip route 0.0.0.0 0.0.0.0 R2-IP track 10
ip route 0.0.0.0 0.0.0.0 R4-IP 111 track 20
when track 10 down, the route "ip route 0.0.0.0 0.0.0.0 R2-IP" will disappear in route table ,they the route "ip route 0.0.0.0 0.0.0.0 R4-IP" install .
07-12-2010 03:00 AM
Hi
I got a question.
How does it work when a routing protocol is applied between R1--to---R2 and R1---to---R4
example Eigrp and OSPFas Routing Protocol...
07-12-2010 02:53 AM
hello ,
we can use cisco ip sla technology. use route track feature.
reference to , http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst4500/12.2/44sg/configuration/guide/swipsla.html
ip sla 1
.....
ip route 0.0.0.0 0.0.0.0 R2-IP track 10
ip route 0.0.0.0 0.0.0.0 R4-IP 111 track 20
when track 10 down, the route "ip route 0.0.0.0 0.0.0.0 R2-IP" will disappear in route table ,they the route "ip route 0.0.0.0 0.0.0.0 R4-IP" install .
07-12-2010 03:00 AM
Hi
I got a question.
How does it work when a routing protocol is applied between R1--to---R2 and R1---to---R4
example Eigrp and OSPFas Routing Protocol...
07-12-2010 04:10 AM
CASE 1 - If same routing protocol is running between all routers then no further tracking is required, protocol will take care of convergence.
CASE 2 - If routing protocol is running only btwn R1--R2 , R3--R4 , and R2 is not advertizing R4 destinations to R1 then similar tracking suggested by wang is required.
Hope i m not confusing.
Thanks,
Mazhar
07-12-2010 03:17 AM
Hey thanks wang for your reply,
u mean i shld track the ip sla n if sla is down thru R2 then it will install higher admin distance R4 route.
let me try this n come back to you.
07-13-2010 01:07 AM
Hey thanks wang ,
i tryied it n it works, this is a smart solution, thanks for your help.
Regards,
Mazhar.
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