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Cabletron Systems 04-0053-01 Manual De Usuario

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8-2   SmartSwitch ATM User Guide
Port ATM Address Filters
  ATM Filtering and Clocking
8.1.3
ATM Address Filter Example
The following is an example of creating a filter, a filter set, and assigning the filter set to an incoming and outgoing 
port.
1.
Use the 
add atmfilter
 command to create filters on source and/or destination addresses
SmartSwitch # add atmfilter
FilterName(FILTER1)                       : Domain1
Src-ATMAddr()                             : 39:00:00:00:00:00:00:00:00:00:1d:a3:
44:00:1d:a3:44:20:11:00
SrcAddrMask(FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF):
Dst-ATMAddr()                             : 39:00:00:00:00:00:00:00:00:00:1d:b4:
d5:00:1d:b4:d5:14:31:00
DstAddrMask(FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF):
FilterType()                              : deny
SmartSwitch #
SmartSwitch # add atmfilter
FilterName(FILTER2)                       : domain2
Src-ATMAddr()                             : 39:00:00:00:00:00:00:00:00:00:1d:71:
04:00:1d:71:04:55:36:00
SrcAddrMask(FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF):
Dst-ATMAddr()                             : 39:00:00:00:00:00:00:00:00:00:1d:7a:
12:00:1d:7a:12:01:57:00
DstAddrMask(FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF):
FilterType()                              : deny
SmartSwitch #
2.
Use the 
add atmfilterset
 command to create a filter set that uses the filters 
domain1
 and 
domain2
SmartSwitch # add atmfilterset
FilterSetName(SET1)                       : Denied_domains
FilterName()                              : domain1
FilterName()                              : domain2
FilterName()                              :    
— Press the Enter key when finished specifying filters
Created Filter Set (Denied_domains) With 2 Filters
SmartSwitch #
3.
Use the 
create portfilterset
 command to assign the filter set to an incoming and outgoing port.
SmartSwitch # create portfilterset
InComingPort()                            : 8a1
OutGoingPort()                            : 8a2
FilteSetName()                            : Denied_domains
SmartSwitch #
Once the filter set is assigned to the incoming and outgoing ports, any call setup attempted through ports 
8a1
 and 
8a2
 
are rejected if they contain the source and destination addresses specified in the filters 
domain1
 and 
domain2
.
Source and Destination Address Masks
When creating an ATM address filter, the 
add atmfilter
 command prompts for an address mask (
SrcAddrMask
 and 
DstArrdMask
). When an entity attempts a call through a port, the address masks determines which bits of the addresses 
presented by the entity are to be compared against which bits of the ATM addresses specified in the filter. This 
bit-filtering is performed by applying the mask to both the call’s address and the specified address in the filter.