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.
Unfortunately, ip sla isn't even an option in our IOS:
Global IP configuration subcommands:
sap Global IP Multicast SAP Commands
scp Scp commands
security Specify system wide security information
slb Server Load Balancing
source IP source
source-route Process packets with source routing header options
ssh Configure ssh options
sticky-arp Allow the creation of sticky ARP entries
subnet-zero Allow 'subnet zero' subnets
This is why I asked the original question (sorry, I forgot to mention that). I would have used ip sla, but since it's not available, I wondered if there was another option. Seems like we're limited with our options.
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