Default Layer 2 Protocol Tunneling Configuration - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring Layer 2 Protocol Tunneling
Figure 30-8
Customer A
This section contains the following subsections:
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Default Layer 2 Protocol Tunneling Configuration

Table 30-1
Table 30-1
Feature
Layer 2 protocol tunneling
Shutdown threshold
Drop threshold
CoS value
Layer 2 Protocol Tunneling Configuration Guidelines
These are some configuration guidelines and operating characteristics of Layer 2 protocol tunneling:
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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
30-16
Chapter 30
Layer 2 Protocol Tunneling for EtherChannels
EtherChannel 1
VLAN 17
Site 1
VLAN 18
VLAN 19
VLAN 20
Default Layer 2 Protocol Tunneling Configuration, page 30-16
Layer 2 Protocol Tunneling Configuration Guidelines, page 30-16
Configuring Layer 2 Tunneling, page 30-17
Configuring Layer 2 Tunneling for EtherChannels, page 30-19
shows the default configuration for Layer 2 protocol tunneling.
Default Layer 2 Ethernet Interface VLAN Configuration
The switch supports tunneling of CDP, STP, including multiple STP (MSTP), and VTP. Protocol
tunneling is disabled by default but can be enabled for the individual protocols on 802.1Q tunnel
ports, access ports or trunk ports.
Dynamic Trunking Protocol (DTP) is not compatible with Layer 2 protocol tunneling because you
must manually configure asymmetric links with tunnel ports and trunk ports.
Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
Service
Provider
Switch A Switch C
Switch B Switch D
Default Setting
Disabled.
None set.
None set.
If a CoS value is configured on the interface for data packets, that
value is the default used for Layer 2 PDUs. If none is configured, the
default is 5.
EtherChannel 1
VLAN 17
Customer A
VLAN 18
VLAN 19
VLAN 20
Trunk
Asymmetric link
Site 2