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[DBR90] How can NETBUI packets be filtered on a DECbrouter 90?
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Copyright (c) Digital Equipment Corporation 1996. All rights reserved.
PRODUCT: DECbrouter 90 Software Microcode, All Versions
COMPONENT: NETBUI
SOURCE: Digital Equipment Corporation
QUESTION:
How can NETBUI packets be filtered on a DECbrouter 90?
ANSWER:
A Service-Access-Point (SAP) filter, using IEEE 802-encapsulated
packets, must be used. NETBUI cannot be filtered using Ethernet V2 or
SNAP-encapsulated packets, as the filter is applied against the
two-byte TYPE field.
The NETBUI SAP number is F0. The filter should be applied to the
client side of the network on the E0 interface as follows:
!
interface ethernet 0
bridge-group 1 input-lsap-list 201
!
!
access-list 201 deny 0xF0F0 0x0101
access-list 201 permit 0x0000 0xFFFF
!
An Ethernet V2 filter may be applied to the same interface at the
same time for TYPE filtering using a different access list number.
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