7-2
Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 7 Configuring Line Interfaces
Line Interfaces
Line Interfaces
•
Information About Line Interfaces, page 7-2
•
How to Configure the Ten Gigabit Ethernet Line Interfaces, page 7-2
•
Changing the Traffic Direction on the Ten Gigabit Ethernet Line Interfaces, page 7-3
The Line Interfaces (Subscriber and Network) are used to connect the Cisco SCE platform to the
network. See the description of network topologies in the “
” chapter of the
Cisco SCE8000 10GBE Installation and Configuration
Information About Line Interfaces
The Cisco SCE 8000 10GBE line interfaces are found on the 1-port Ten Gigabit Ethernet SPAs installed
in subslots 0 through 3 of slot 3. Each 1-port Ten Gigabit Ethernet SPA provides one 10GBE port, which
interfaces with either subscriber or network traffic. These interfaces can be individually configured using
CLI commands in this section.
Flow Control and Bandwidth Considerations
Note
By design, the Cisco SCE platform reacts to Ethernet flow control and does not activate it. Therefore, a
situation could arise in which flow control stalls the Cisco SCE platform by overflowing the Cisco SCE
platform queues, thereby causing traffic to be dropped on the Rx interfaces. If this situation persists for
more than five seconds, it may trigger the internal sanity checks mechanism within the Cisco SCE
platform, which may in turn trigger a reload of the Cisco SCE platform in an attempt to recover.
However, the technical support file may not be generated when the Cisco SCE platform recovers after
reloading several times.
Maximum Packet Size
The MTU value for the Cisco SCE 8000 traffic processing is 9238 bytes. However, in the current version,
packets larger than 1600 bytes are bypassed and are not handled by the service control application.
How to Configure the Ten Gigabit Ethernet Line Interfaces
The 10GBE line interfaces are configured in TenGigabitEthernet mode.
Step 1
At the SCE# prompt, enter
configure
and press
Enter
.
Enters Global Configuration mode.
Step 2
At the SCE(config)# prompt, enter
interface TenGigabitEthernet 3/
bay number
/0
and press
Enter
,
where
bay number
is the number of the selected SPA bay (0-3). Currently, the slot number is always 3
and the port number is always 0.
Enters Interface Configuration mode for the selected 10 GBE interface.