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Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 7 Configuring Line Interfaces
Tunneling Protocols
Note
Asymmetric routing topology' support and 'asymmetric tunneling support' are two separate features.
Asymmetric routing topology refers to topologies where the Cisco SCE platform might see some flows
only in one direction (upstream/downstream). Asymmetric tunneling support (asymmetric L2 support)
refers to the ability to support topologies where the Cisco SCE platform sees both directions of all flows,
but some of the flows may have different layer 2 characteristics (like MAC addresses, VLAN tags, MPLS
labels and L2TP headers), which the Cisco SCE platform must specifically take into account when
injecting packets into the traffic (such as in block and redirect operations). Note as well, that in order to
support asymmetric layer 2, the Cisco SCE platform switches to
asymmetric flow open
mode, which
incurs a certain performance penalty, as well as reducing capacity. This is NOT the case for asymmetric
routing topology.
From the SCE(config if)# prompt, type:
Displaying the Tunneling Configuration
From the SCE# prompt, type:
How to Display the 6to4 Configuration
From the SCE# prompt, type:
How to Display the DS-Lite Configuration
From the SCE# prompt, type:
Command
Purpose
asymmetric-L2-support
Enables asymmetric L2 support.
Command
Purpose
show interface linecard 0
(MPLS|VLAN|L2TP|IP-tunnel)
Displays the current configuration for the
specified tunnel option.
Command
Purpose
show interface linecard 0 IP-tunnel 6to4
Displays the current configuration for the 6to4
tunnel option.
Command
Purpose
show interface linecard 0 IP-tunnel DS-Lite
Displays the current configuration for the DS-Lite
tunnel option.