Port Status and Basic Configuration

Jumbo Packets on the Series 2800 Switches

 

 

1

 

 

2

 

 

 

3

 

4

 

5

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Non-Jumbo VLAN

Jumbo-Enabled VLAN

 

 

 

 

 

 

 

 

 

 

 

 

 

VLAN 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

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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