Avaya Configuring Traffic Filters and Protocol Prioritization Instrukcja Użytkownika Strona 84

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Configuring Traffic Filters and Protocol Prioritization
5-2
Specifying MAC Address Ranges
When you create a filter that includes a Source or Destination MAC Address
criterion, you specify the MAC address range in either most-significant-bit (MSB)
or canonical format. Table 5-1 lists the address formats to use.
When defining outbound traffic filters you can specify a MAC address in either
MSB or canonical format, but the default is canonical.
Source Routing Bridge Source MAC Addresses
When specifying Source MAC addresses for SRB traffic filters, set the most
significant bit (MSB) to one.
For example (Token Ring packets):
1. The Source MAC address to be filtered is 0x40000037450440.
2. Add the First Bit Set MAC Address 0x800000000000.
3. Enter the filter criteria range as 0xC00037450440.
Bit 0 (the 0x80 bit) of Byte 0 (the leftmost byte) is the Routing Information
Indicator bit, which indicates the presence of the Routing Information Field (RIF).
This bit is set to 1 if the RIF field is present and to 0 if there is no RIF field. Keep
this in mind if you use a sniffer to analyze packets for their Source MAC address.
For example, a sniffer would decode LAA with the first byte of 40 as
0x400031740001. If the RIF bit is set, the hexadecimal value of the packet is
0xC00031740001.
Table 5-1. Format for Specifying Source-Routing MAC Addresses
Address Type Address Format
PPP MSB
Bay Networks Standard Frame Relay Canonical
Bay Networks Proprietary PPP Canonical
Token Ring MSB
Ethernet Canonical
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