ATM and Frame Relay SVCs, and SPVCs 8-11
Network Management
Other Redundancy Options
Figure 8-7 illustrates only a single ESP-to-BXM redundancy option. There are four ESP-to-BXM
redundancy options possible:
1 A single ESP with a Y-cable to redundant BXMs.
2 Two ESPs (a redundant pair), each attached to a single port on a single BXM.
3 Two ESPs (a redundant pair), each attached to a single port on two separate (redundant) BXMs.
4 Two ESPs (a redundant pair), each attached to different ports with Y-cables on two separate
(redundant) BXMs.
Y-cables are for connecting the ESP’s ATM Network Interface Card to redundant BXMs. They do
not necessarily indicate that the ESP is connected in the redundant pair configuration (that is, an
active and standby ESP). The Cisco WAN Service Node Extended Services Processor Installation
and Operation document contains further information about ESP Y cables.
Network Management
As shown in Figure 8-5, the BPX switch can have an Ethernet LAN connection to a Cisco
StrataView Plus Workstation. Cisco StrataView Plus discovers and monitors the ESP similarly to the
way it does an MGX 8220 interface shelf. Cisco StrataView Plus discovers the existence of the ESP
when it is added to the BPX switch with the addshelf command. After discovery, the ESP will be
displayed on the Cisco StrataView Plus topology map as a shelf attached to the BPX switch.
Cisco StrataView Plus manages the BPX switch by providing:
• Telnet access to the ESP Configuration Interface.
• Configuration backup and restore
• Image download allows the user to select an ESP from the topology map and then select Image
Download from a pull-down menu. A dialog screen displays the list of available image files and
prompts the user to select a file. The selected file is sent to the ESP.
Resource Partitioning
During provisioning, resources on all UNI ports (both ATM and Frame Relay) are partitioned
between SVCs and PVCs. Partitioning is performed using the BPX switch and MGX 8220 command
line interfaces. This partitioning information is retrieved from the BPX switch by reading its port and
trunk tables and from the MGX 8220 by reading the resource partitioning tables in the AUSM and
FRSM MIBs.
The BPX switch line and routing or feeder trunk resources to be partitioned are:
• LCN range
• VPI range
• Port Queues
• Egress Queue pool size
• Bandwidth
MGX 8220 Feeder Trunk (BXM/BNI) resources to be partitioned are:
• LCN range
• Bandwidth
