Hi,
If you advertise the /24 to both ISPs, you should already have load sharing, as each provider customers will use the local provider network to get to your /24.
Advertising a different /25 on each ISP is possible, but will not help as ISP won't propagate prefixes longer than /24 to their upstream provider. This is to avoid aggravating the Internet routing size.
Regards,
Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
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