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Chapter 6 Cabling the Line Ports and Completing the Installation
Installing a Cascaded System
SCE 2000 4xGBE Installation and Configuration Guide
6-14
OL-7824-02
To configure the connection mode:
Step 1
From the
SCE 2000
(config if)#
prompt, type
connection-mode
inline-
cascade/receive-only-cascade [p
hysically-connected-links
{link-0/link-1}]
[
priority
{primary/secondary}]
[
on-failure
{
bypass/cutoff}
]
and press
Enter
.
E
XAMPLE
1
Use the following command to configure the primary
SCE 2000
platform in a two-
SCE 2000
platform inline topology. Link 1 is connected to this
SCE 2000
platform and the behavior of the
SCE 2000
platform if a failure occurs is
bypass
.
SCE 2000
(config if)#
connection-mode inline-cascade physically-connected-links
link-1 priority primary on-failure bypass
E
XAMPLE
2
Use the following command to configure the
SCE 2000
platform that might be cascaded with the
SCE 2000
platform in Example 1. This
SCE 2000
platform would have to be the secondary
SCE
2000
platform, and Link 0 would be connected to this
SCE 2000
platform, since Link 1 was
connected to the primary. The connection mode would be the same as the first, and the behavior
of the
SCE 2000
platform if a failure occurs is also bypass.
SCE 2000
(config if)#
connection-mode inline-cascade physically-connected-links
link-0 priority secondary on-failure bypass
Link Mode
The
SCE 2000
platform has an internal hardware card used to maintain the links even when the
SCE 2000
platform fails. This hardware card has four possible modes of operation:
•
bypass
•
forwarding
•
cutoff
•
sniffing
Normally, the link mode is selected by the
SCE 2000
platform software according to the
configured connection-mode. However, the
link-mode
command can be used to enforce a
specific desired mode. This may be useful when debugging the network, or in cases where we
would like the
SCE 2000
platform just to forward the traffic. (Note that this is only relevant to
inline topologies even though the configuration is available also when in receive-only mode.)
The following link mode options are available:
•
Forwarding:
forwards traffic on the specified link to the
SCE 2000
platform for processing.
•
Bypass:
stops all forwarding of traffic on the specified link to the
SCE 2000
platform. Traffic
still flows on the link, but is not processed in any way by the
SCE 2000
platform.
This does not affect the redundancy states.