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by Justin Wilsonj2
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tunnel

BGP, a single /24 and two diverse non-connected exit points

March 15, 2026November 26, 2020 by j2sw

I am starting to see the following scenario more and more as IPv4 space is hard to get, but isn’t. With ARIN it is still possible to get an IPv4 allotment. Many smaller ISPs qualify for a /24 and can get one if they wait long enough on the ARIN waiting list. a /24 of … Read more

Categories Internet Architecture Tags bgp, ip addressing, tunnel

Ethernet MTU and overhead

March 14, 2026January 16, 2020 by j2sw

how much overhead do I need to account for on my transport network? I have put together a quick list to help when you are calculating your overhead

Categories Network Operations Tags eoip, mtu, overhead, tunnel

Mikrotik passing multiple subnets across a tunnel with multiple policies

May 2, 2019 by j2sw

Recently we had an issue with an IPsec tunnel on Mikrotik passing multiple subnets across a tunnel with multiple policies

Categories Uncategorized Tags ipsec, mikrotik, MTIN, policies, tunnel

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