
Chapter 4 Configuring Interfaces
Configuring the ATM Uplink Interface (Catalyst 8540)
To create a PVC, perform the following steps, beginning in global configuration mode:
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 | Command | Purpose | 
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| Router(config)# interface atm | Enters interface configuration mode and specifies the ATM | |
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 | slot/subslot/interface | interface to configure. | 
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| Step 2 | 
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| Configures the PVC with VCD value associated with a VPI/VCI | ||
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 | vpi vci  | pair and specifies an encapsulation type. | 
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The atm pvc command allows you to specify additional optional parameters for the connection, including peak, average, and burst transmission rate, and the frequency for generating OAM cells.
Mapping a Protocol Address to a PVC
Cisco IOS supports a mapping scheme that allows you to associate a protocol address with a VCD (for PVCs) or with an ATM NSAP address (for SVCs). To create a mapping, you first create a map list, then associate the map list to an interface.
To map a protocol address to a PVC, perform the following steps, beginning in global configuration mode:
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| Step 1 | 
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| Router(config)#  | Creates a map list and assigns it a name. | |
| Step 2 | 
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| Creates one or more map list entries, associating a protocol | ||
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 | address with a VCD. | 
| Step 3 | 
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| Exits  | ||
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 | Router(config)# | 
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| Step 4 | 
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| Router(config)# interface atm | Enters interface configuration mode and specifies the ATM | |
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 | slot/subslot/interface | interface to configure. | 
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| Step 5 | 
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| Associates the map list with the interface. | ||
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You can create multiple map lists. An interface can have only one map list associated with it, but a map list can be associated with multiple interfaces.
PVC Example
In the following example, PVC 5 is created on ATM interface 1/0/0 by means of LLC/sNAP encapsulation over AAL5. ATM interface 1/0/0 (IP address 1.1.1.1) connects with the ATM interface (IP address 1.1.1.5) at the other end over VC 5.
Router(config)# interface atm 1/0/0
Router(config)# 
Router(config-map-list)# 1.1.1.5 atm-vc  5 broadcast
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 | Layer 3 Switching Software Feature and Configuration Guide | 
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