HP 2600 - Manual (Page 190)

Port Status and Basic Configuration
Jumbo Packets on the Series 2800 Switches
Jumbo-Enabled VLAN
VLAN 10
Non-Jumbo VLAN
VLAN 20
Port 3 belongs to both VLAN 10 and VLAN 20.
Jumbo packets received inbound on port 3 can be
forwarded out the Non-Jumbo ports 4, 5, and 6.
1 5 2 3 4 6
Figure 10-7. Forwarding Jumbo Packets Through Non-Jumbo Ports
Jumbo packets can also be forwarded out non-jumbo ports when the
jumbo packets received inbound on a jumbo-enabled VLAN are routed to
another, non-jumbo VLAN for outbound transmission on ports that have
no memberships in other, jumbo-capable VLANs. Where either of the
above scenarios is a possibility, the downstream device must be config­
ured to accept the jumbo traffic. Otherwise, this traffic will be dropped
by the downstream device.
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