Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 275)

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Central Site Remote Access Switch 275

ONFIGURING

DVANCED

RIDGING

Bridge Filters

3. DESTINATION MAC-address DISCARD < distribution list >

This filter allows you to discard MAC frames addressed to the specified MAC address. When

the specified MAC address appears in the destination address field of the MAC frame, the

frame will NOT be forwarded as specified in the distribution list. If no distribution list is

specified, the frame will not be forwarded.

4. DESTINATION MAC-address CONNECT< distribution list >

This filter allows you to connect MAC frames addressed to the specified MAC address. When

the specified MAC address appears in the destination address field of the MAC frame, the

frame will be forwarded as specified in the distribution list.

5. PROTOCOL protocol-Id DISCARD < distribution list >

This filter allows you to discard packets based on the Ethernet type field or the corresponding

802.3 LSAP field. You specify the protocol Id that is to be discarded. The filtering mechanism

will determine if the packet is Ethernet format or 802.3 format. The Ethernet type or LSAP field

will be checked based on packet format. See the section titled "Protocol Definitions" for more

information.

6. PROTOCOL protocol-Id CONNECT< distribution list >

This filter allows you to connect packets based on the Ethernet type field or the corresponding

802.3 LSAP field. You specify the protocol Id that is to be connected. The filtering mechanism

will determine if the packet is Ethernet format or 802.3 format. The Ethernet type or LSAP field

will be checked based on packet format. See the section titled “Protocol Definitions” for more

information.

7. PACKET OFFSET dd MASK xxxxxxxxxxxx VALUE xxxxxxxxxxxx DISCARD <distribution-

list>

This filter allows you to discard packets based on packet data outside the source and

destination MAC addresses or protocol Id. For example, you may wish to filter packets based

on IP address information. You would then specify the offset (dd) into the MAC frame where

the filter comparison is to begin. The mask data indicates which bits within the frame data are

significant and will be compared to the value. The frame data is logically “anded” with the

mask, and then compared to the specified value. The value field must be a subset of the mask

field. That is, the value field logically “anded” with the mask field must equal the value field.

The value and mask fields must have equal lengths.

8. PACKET OFFSET dd MASK xxxxxxxxxxxx VALUE xxxxxxxxxxxx CONNECT <distribution-

list>

This filter allows you to connect packets based on packet data outside the source and

destination MAC addresses or protocol Id. For example, you may wish to filter packets based

on IP address information. You would then specify the offset (dd) into the MAC frame where

the filter comparison is to begin. The mask data indicates which bits within the frame data are

significant and will be compared to the value. The frame data is logically “anded” with the

mask, and then compared to the specified value. The value field must be a subset of the mask

field. That is, the value field logically “anded” with the mask field must equal the value field.

The value and mask fields must have equal lengths.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 275

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