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7.8.1.0 - Force10 Networks

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Rate-limit BPDUs (optional): To rewrite the well-known destination MAC address to the <strong>Force10</strong><br />

proprietary MAC address, the BPDUs are forwarded to the RPM. You can rate-limit BPDUs and configure<br />

the switch to start dropping BPDUs when the threshold is reached. Use the following command in<br />

CONFIGURATION mode:<br />

Command Syntax Command Mode Purpose<br />

protocol-tunnel rate-limit rate CONFIGURATION Configure a maximum rate at which the RPM<br />

CPU will process L2PT frames.<br />

Default: 75<br />

Range: 75 to 4000<br />

Debugging L2PT (optional): To enable debugging to ensure incoming packets are received and rewritten<br />

to a new MAC address, use the following command in CONFIGURATION mode:<br />

Command Syntax Purpose<br />

debug protocol-tunnel interface<br />

{in | out | both} [vlan vlan-id]<br />

[count value]<br />

VLAN-Stack Configuration Examples<br />

This section contains the following configuration examples:<br />

• Creating a VLAN-Stack network on page 758<br />

• Making a port a trunk port and part of a single-tagged VLAN on page 762<br />

• Making a hybrid port a trunk port and a member of other VLANs on page 763<br />

• Configuring an E-Series VLAN-Stack trunk port to tunnel customer BPDUs on page 764<br />

• Configuring VLAN-Stack IP addresses on page 765<br />

Creating a VLAN-Stack network<br />

For interface, enter one of the following interface type names, followed by<br />

the slot/port information:<br />

For a Fast Ethernet interface, enter FastEthernet.<br />

For a 1-Gigabit Ethernet interface, enter GigabitEthernet.<br />

For Port Channel interface types, enter port-channel followed by a<br />

number from 1 to 32 for EtherScale, 1 to 255 for TeraScale.<br />

For a 10-Gigabit Ethernet interface, enter TenGigabitEthernet..<br />

Then, enter the keyword in, out, or both to debug incoming interfaces,<br />

outgoing interfaces, or both incoming and outgoing interfaces.<br />

Then, optionally, enter the keyword vlan followed by the VLAN ID, or the<br />

keyword count followed by the number of debug outputs, or enter both.<br />

Figure 517 is an example of a VLAN-Stack network. Here, customer traffic enters the network on the<br />

VLAN-Stack access ports in E1200-1 and E1200-2. The traffic is assigned a VLAN-Stack VLAN and<br />

those VLAN-Stack VLANs are switched in E1200-3. In this example, traffic from Customer 3 entering<br />

E1200-2 is switched through E1200-3 to the Customer 3 port on E1200-1.<br />

758 VLAN Stacking

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