Topology-Related Parameters For Redundant Topologies; How To Configure The Connection Mode; How To Set The Link Mode - Cisco SCE 8000 Installation And Configuration Manual

CLI Commands for Cascaded Systems
Connect the traffic port of Cisco SCE 8000 platform 2. This causes a momentary down time until the
Step 9
network elements from both sides of the Cisco SCE 8000 platform auto-negotiate with it and starts
working (when working inline). (See
When full control is needed, change the link mode on both Cisco SCE 8000 platforms on both links to
Step 10
'forwarding'. It is recommended to first configure the active Cisco SCE 8000 platform and then the
standby. (See
CLI Commands for Cascaded Systems
This section presents CLI commands relevant to the configuration and monitoring of a redundant system.
•
•
•
•

Topology-Related Parameters for Redundant Topologies

All four of the topology-related parameters are required when configuring a redundant topology:
•
•
For backward compatibility, the physically-connected-links parameter is still recognized.
Note
•
•
Cisco SCE8000 GBE Installation and Configuration Guide
6-20
How to Set the Link Mode, page
Topology-Related Parameters for Redundant Topologies, page 6-20
How to Configure the Connection Mode, page 6-21
How to Set the Link Mode, page 6-21
Monitoring a Cascaded System, page 6-22
Connection mode—Redundancy is achieved by cascading two SCE platforms. Therefore the
connection mode for both SCE platforms is:
Inline-cascade
–
sce-id—In cascaded topologies, defines which link is connected to this SCE platform.
The sce-id parameter, which identifies the SCE platform, replaces the physically-connected-link
parameter, which identified the link. This change was required with the introduction of the
Cisco SCE 8000 GBE platform, which supports multiple links.
In the Cisco SCE 8000 10 GBE, the number assigned to the sce-id parameter (0 or 1) is defined as
the of number of the physically connected link.
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 via an external optical bypass module when the SCE platform either
has failed or is booting.
If either the bypass or external-bypass option is configured, the optical bypass module must be
properly installed. If an optical bypass device is not detected, the command is executed but a
warning is issued. The system then enters warning mode until either the command is changed, or the
presence of an optical bypass device is detected.
Chapter 6 Cabling the Line Ports and Completing the Installation
Dual Link: Two Cisco SCE 8000s Topology, page
6-21.)
6-3.)