Solved: Set mtu 1500 On Ip tunnel

admin@atrinnet.net · ‎01-31-2025

Hi All nexus Switches in my network support jumbo mtu 9216

Now if customer set on ipip tunnel mtu 1500 Can Cross that mtu without Fragmentaion ?

or maximum Size support by this tunnel is 1480 ?

Joseph W. Doherty · ‎02-01-2025

Depends on what's the MTU available between tunnel physical end point interfaces.

I've done H 1500 R 9k R 1500 H, with tunnels on the routers handling host traffic at 1500 without fragmentation (encapsulated packet larger than 1500).

View solution in original post

marce1000 · ‎02-01-2025

- The overall mtu is determined by the path (interconnection) with the lowest value.

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

admin@atrinnet.net · ‎02-02-2025

I Can ping end to End vlan by 1580 without fragment Can set mtu tunnel 1560? iptunnel ????

Joseph W. Doherty · ‎02-01-2025

Depends on what's the MTU available between tunnel physical end point interfaces.

I've done H 1500 R 9k R 1500 H, with tunnels on the routers handling host traffic at 1500 without fragmentation (encapsulated packet larger than 1500).