Cisco 15327 - Manual (Page 268)

17-16
Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
Cisco Proprietary RPR Cisco IOS Configuration Example
Figure 17-8 Cisco proprietary RPR Bridge Group
Caution All Layer 2 network redundant links (loops) in the connecting network, except the Cisco proprietary
RPR topology, must be removed for correct operation. Or if loops exist, you must configure STP/RSTP.
To configure the needed interfaces, perform the following procedure, beginning in global configuration
mode:
Cisco Proprietary RPR Cisco IOS Configuration Example
Figure 17-5 on page 17-9 shows a complete example of a Cisco proprietary RPR Cisco IOS
configuration. The associated Cisco IOS code is provided in Examples 17-1 , 17-2 , and 17-3 . The
configuration assumes that ML-Series card POS ports are already linked by point-to-point SONET/SDH
circuits configured through CTC.
Example 17-1 SPR Station-ID 1 Configuration
ML-Series# show run
bridge irb
interface SPR1
no ip address
no keepalive
spr station-id 1
ML-Series Card
134983
Ethernet
Port 0
Ethernet
Port 1
Bridge Group
POS 0
POS 1
SPR (RPR)
Interface
Command Purpose
Step 1 Router(config)# interface type number Enters interface configuration mode for the Ethernet
interface joining the bridge group.
Step 2 Router(config-if)# no shutdown Enables the interface.
Step 3 Router(config-if)# bridge-group
bridge-group-number
Creates the specified bridge group and assigns the bridge
group to the interface. Creating the bridge from the
interface configuration disables STP or RSTP
(spanning-disabled), which is recommended for
Cisco proprietary RPR.
Step 4 Router(config)# interface spr1 Enters interface configuration mode for the SPR
Step 5 Router(config-subif)# bridge-group
bridge-group-number
Associates the SPR interface to the specified bridge
group.