Hello Jay,

we do nat have experience with S-series, but I'll try to guve my three cents...

There ist a command "set mtu {enable | disable}":
Enables or disables path MTU discovery protocol.

Did you try "set mtu enable" (should be enabled by default)?

Did you set all ports, which are belonging to this vlan, to jumbo? Or are some l2 ports belonging to this vlan left with default mtu?

Which mtu do you see on issueing a "show interface" command?

Kind regards
Reinhard
Am 25.04.2013 21:54, schrieb Auger, Jay (IS):
Hello world,

I’ve got an S4 connect to a provider’s Ci$co 7600 via 10G interface.
They’re requiring we allow jumbo frames.  All I can find is the command
‘set port jumbo enable tg.x.y’.

Anything else I need to do?  When I ping with anything larger than 1472,
it fails.

ROUTER(S4A)(su)->ping -s 1472 1.2.3.4

PING 1.2.3.4 (1.2.3.4) 1480 bytes of data.

1480 bytes from 1.2.3.4: icmp_seq=0 ttl=255 time=2.24 ms

1480 bytes from 1.2.3.4: icmp_seq=1 ttl=255 time=2.17 ms

1480 bytes from 1.2.3.4: icmp_seq=2 ttl=255 time=1.89 ms

1480 bytes from 1.2.3.4: icmp_seq=3 ttl=255 time=1.73 ms

--- 1.2.3.4 ping statistics ---

4 packets transmitted, 4 received, 0% packet loss, time 2993 ms

rtt min/avg/max = 1/1/2 ms

ROUTER(S4A)(su)->ping -s 1473 1.2.3.4

PING 1.2.3.4 (1.2.3.4) 1481 bytes of data.

--- 1.2.3.4 ping statistics ---

4 packets transmitted, 0 received, 100% packet loss, time 4002 ms

ROUTER(S4A)(su)->

Jay

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