Planning To Build A Stack With 802.1Br Switch Port Extender Capability - Arris Ruckus ICX 7850 Series Configuration Manual

Fastiron stacking configuration

Table of Contents

NOTE

If STP is not enabled, there may be a loop issue when multiple cables are used to connect a standalone unit to a stack.

The loop does not affect stack formation. The loop issue disappears after the multiple links are converted to stacking

trunks when the standalone unit is integrated to the stack. However, temporary looping may cause some data traffic

interruption.

NOTE

If you want to enlarge a live link or change a linear stack to a ring in a production network, it is better to use stack-port

or stack-trunk commands or, for live links, multi-stack-trunk commands to make the configuration changes before

you connect the new links. If you connect new links first without the new configuration, the new links cause Layer 2

loops and possible data traffic interruption. After you run stack interactive-setup to discover these new links and

generate new configuration for the new links, the loop issue disappears.

•

When you have a stack of eight or more units, you may need to increase the trap hold time from the default (60

seconds) to five minutes (300 seconds). This will prevent the loss of initial boot traps. To increase the trap hold time, use

the following command.

device# configure terminal

device(config)# snmp-server enable traps holddown-time 300

Planning to build a stack with 802.1br switch

port extender capability

If you are planning to create an 802.1br SPX configuration with an ICX 7650 or ICX 7750 core stack, there are a few

considerations.

In general, Ruckus stacking and 802.1br SPX configuration are independent. Here are a few details to keep in mind:

•

Only ICX 7650 devices or ICX 7750 devices can serve as the control bridge (CB). The CB can be a standalone unit or a

stack of multiple units.

•

ICX 7150, ICX 7250, and ICX 7450 devices can be configured as PE units attached to the CB. PE units can be attached to

any CB unit.

•

While a stack may include up to 12 units, a CB stack of no more than four units is recommended.

•

ICX 7750 breakout ports can be used with an 802.1br SPX configuration; however, they can be enabled only in a

standalone ICX 7750 unit.

•

SPX runs over LLDP protocol at Layer 2. When you enable SPX with the spx cb-enable command, the lldp run command

is also executed if LLDP has not previously been enabled.

•

You will need to plan a server location from which images and manifest files can be downloaded to PE units.

•

In general, ICX 7650 and ICX 7750 devices in the CB retain all capabilities. The feature set of devices operating as PE

units, however, may be affected.

For detailed information on 802.1br SPX configuration, including protocol considerations, refer to the Ruckus FastIron Campus

Fabric Configuration Guide.

Ruckus FastIron Stacking Configuration Guide, 08.0.90

Part Number: 53-1005572-01