Cisco ISE Software Configuration Guide - Page 49

Troubleshooting Tips, Configuring ATM Shaping on AToM VCs

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers How to Configure AToM VCs on the 4-Port ATM ISE Line Card Note OAM Emulation should be configured at both ends of the VC. Example Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# pvc 10/50 l2transport Router(config-if-l2trans-pvc)# encapsulation aal5 Router(config-if-l2trans-pvc)# oam emulation-enable Router(config-if-l2trans-pvc)# oam-pvc manage 0 Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls Troubleshooting Tips To troubleshoot AToM VCs, use the following commands: Command Router# show mpls l2transport vc Router# show mpls l2transport vc detail Purpose Displays information about AToM VCs that have been enabled to route Layer 2 packets on the router. Displays detailed information about the VCs that have been assigned VC IDs. Configuring ATM Shaping on AToM VCs The 4-Port ATM ISE line cards support both VP and VC traffic shaping for AToM. The following ATM shaping options are available: • Constant bit rate (CBR)-Supports real-time applications that request a static amount of bandwidth that is continuously available for the duration of the connection. Use the command cbr pcr. • Real-time variable bit rate (VBR-rt)-Supports real-time applications that have bursty transmission characteristics. Use the command vbr-rt pcr scr. • Non-real time variable bit rate (VBR-nrt)-Supports non-real-time applications with bursty transmission characteristics that tolerate high cell delay, but require low cell loss. Use the command vbr-nrt pcr scr. • Unspecified bit rate (UBR)-Supports non-real-time applications that tolerate both high cell delay and cell loss on the network. There are no network service-level guarantees for the UBR service category, and therefore it is a best-effort service. Use the command ubr pcr. The following tasks illustrate how to configure the ATM shaping queue size and traffic shaping for CBR, UBR, VBR-rt and VBR-nrt classes of service on AToM VCs and VP tunnels in various transport modes. • Configuring Cell Relay over MPLS on PVCs, page 50 • Configuring Cell Relay over MPLS on PVPs, page 52 • Configuring Cell Packing over MPLS on PVCs, page 55 • Configuring Cell Packing over MPLS on PVPs, page 57 • Configuring AAL5 over MPLS on PVCs, page 60 Cisco IOS Release 12.0(27)S 49

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers
How to Configure AToM VCs on the 4-Port ATM ISE Line Card
49
Cisco IOS Release 12.0(27)S
Note
OAM Emulation should be configured at both ends of the VC.
Example
Router> enable
Router# configure terminal
Router(config)# interface atm1/0
Router(config-if)# pvc 10/50 l2transport
Router(config-if-l2trans-pvc)# encapsulation aal5
Router(config-if-l2trans-pvc)# oam emulation-enable
Router(config-if-l2trans-pvc)# oam-pvc manage 0
Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls
Troubleshooting Tips
To troubleshoot AToM VCs, use the following commands:
Configuring ATM Shaping on AToM VCs
The 4-Port ATM ISE line cards support both VP and VC traffic shaping for AToM. The following ATM
shaping options are available:
•
Constant bit rate (CBR)—Supports real-time applications that request a static amount of bandwidth
that is continuously available for the duration of the connection. Use the command
cbr
pcr.
•
Real-time variable bit rate (VBR-rt)—Supports real-time applications that have bursty transmission
characteristics. Use the command
vbr-rt
pcr scr.
•
Non-real time variable bit rate (VBR-nrt)—Supports non-real-time applications with bursty
transmission characteristics that tolerate high cell delay, but require low cell loss. Use the command
vbr-nrt
pcr scr.
•
Unspecified bit rate (UBR)—Supports non-real-time applications that tolerate both high cell delay
and cell loss on the network. There are no network service-level guarantees for the UBR service
category, and therefore it is a best-effort service. Use the command
ubr
pcr.
The following tasks illustrate how to configure the ATM shaping queue size and traffic shaping for CBR,
UBR, VBR-rt and VBR-nrt classes of service on AToM VCs and VP tunnels in various transport modes.
•
Configuring Cell Relay over MPLS on PVCs, page 50
•
Configuring Cell Relay over MPLS on PVPs, page 52
•
Configuring Cell Packing over MPLS on PVCs, page 55
•
Configuring Cell Packing over MPLS on PVPs, page 57
•
Configuring AAL5 over MPLS on PVCs, page 60
Command
Purpose
Router#
show mpls l2transport vc
Displays information about AToM VCs that have been enabled to
route Layer 2 packets on the router.
Router#
show mpls l2transport vc detail
Displays detailed information about the VCs that have been
assigned VC IDs.