Cisco SGE2000 Configuration Guide - Page 105

How to Con the Connection Mode, How to Set the Link Mode, Connection mode

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Chapter 6 Cabling the Line Ports and Completing the Installation Information About Cascaded Systems • Connection mode - Redundancy is achieved by cascading two SCE platforms. Therefore the connection mode for both SCE platforms may be either: - Inline-cascade - Receive-only-cascade • Physically-connected-links - For each of the cascaded SCE platforms, this parameter defines the number of the link (Link 0 or Link 1) connected to this SCE platform. • Priority - For each of the cascaded SCE platforms, this parameter defines whether it is the primary or secondary device. • On-failure - For each of the cascaded SCE platforms, this parameter determines whether the system cuts the traffic or bypasses it when the SCE platform either has failed or is booting. How to Configure the Connection Mode Use the following command to configure the connection mode, including the following parameters: • inline/receive only • physically connected links • behavior upon failure of the SCE platform • primary/secondary Step 1 From the SCE 2000(config if)# prompt, type connection-modeinline-cascade/receive-only-cascade[ physically-connected-links {link-0/link-1}] [ priority {primary/secondary}] [ on-failure {bypass/cutoff}] and press Enter. EXAMPLE 1 Use the following command to configure the primary SCE platform in a two-SCE platform inline topology. Link 1 is connected to this SCE platform and the behavior of the SCE 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 EXAMPLE 2 Use the following command to configure the SCE platform that might be cascaded with the SCE platform in Example 1. This SCE platform would have to be the secondary SCE platform, and Link 0 would be connected to this SCE 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 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 How to Set the Link Mode The SCE platform has an internal hardware card used to maintain the links even when the SCE platform fails. This hardware card has four possible modes of operation: • bypass • forwarding OL-7824-06 Cisco SCE 2000 4xGBE Installation and Configuration Guide 6-13

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6-13
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-06
Chapter 6
Cabling the Line Ports and Completing the Installation
Information About Cascaded Systems
•
Connection mode
— Redundancy is achieved by cascading two SCE platforms. Therefore the
connection mode for both SCE platforms may be either:
–
Inline-cascade
–
Receive-only-cascade
•
Physically-connected-links
— For each of the cascaded SCE platforms, this parameter defines the
number of the link (Link 0 or Link 1) connected to this SCE platform.
•
Priority
— For each of the cascaded SCE platforms, this parameter defines whether it is the primary
or secondary device.
•
On-failure
— For each of the cascaded SCE platforms, this parameter determines whether the
system cuts the traffic or bypasses it when the SCE platform either has failed or is booting.
How to Configure the Connection Mode
Use the following command to configure the connection mode, including the following parameters:
•
inline/receive only
•
physically connected links
•
behavior upon failure of the SCE platform
•
primary/secondary
Step 1
From the SCE 2000(config if)# prompt, type
connection-mode
inline-cascade/receive-only-cascade
[
physically-connected-links {link-0/link-1}
] [
priority
{primary/secondary}
] [
on-failure
{bypass/cutoff}
] and press Enter.
EXAMPLE 1
Use the following command to configure the primary SCE platform in a two-SCE platform inline
topology. Link 1 is connected to this SCE platform and the behavior of the SCE 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
EXAMPLE 2
Use the following command to configure the SCE platform that might be cascaded with the SCE
platform in Example 1. This SCE platform would have to be the secondary SCE platform, and Link 0
would be connected to this SCE 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 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
How to Set the Link Mode
The SCE platform has an internal hardware card used to maintain the links even when the SCE platform
fails. This hardware card has four possible modes of operation:
•
bypass
•
forwarding