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| - Set Local GRE interface IP address (for example, 10.0.0.254) | | - Set Local GRE interface IP address (for example, 10.0.0.254) |
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− | <nowiki>###</nowiki> GRE netmask should be an entire subnet, /24 or however many spokes we expect to connect to this hub
| + | - Set GRE interface netmask to 255.255.255.0 (for entire subnet or according to how many spokes we expect to connect to this hub) |
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− | <nowiki>###</nowiki> We can still use 10.0.0.254, but with a netmask of 255.255.255.0 for example
| + | - Set GRE MTU value to 1420 (or even slightly lower - 1400 if a mobile interface is used) |
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− | - Set GRE MTU value to 1476 | + | - Outbound/inbound keys are optional, for this example we will leave it at default |
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− | <nowiki>###</nowiki> One note - if we use mobile, I recommend using lower MTU value, maybe 1420 or even lower, down to 1400 or so. I think using 1420 in this example would be better
| + | - Set IPsec Pre-shared key (we used simple 123456 for this example) |
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− | <nowiki>###</nowiki> There have been situations when mobile MTU is not consistent, depending on carrier, which would break connections when packets had to be fragmented
| + | <br>[[File:Dmvpn phase3 example1.png|alt=|border]] |
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− | <nowiki>###</nowiki> Outbound/inbound keys are optional, but worth to mention why they are here and what they are for
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− | | |
− | - Set IPsec Pre-shared key (we used simple 123456 for this example)
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− | | |
− | <br>[[File:DMVP_HUB_phase3_example1.png|border|class=tlt-border]] | |
| ---- | | ---- |
| <b>Step 2</b>: configure DMVPN Phase 1 parameters: | | <b>Step 2</b>: configure DMVPN Phase 1 parameters: |