From: Mosley, Arthur (Arthur.Mosley@xxxxxxxx)
Date: Sun Mar 26 2000 - 19:50:29 GMT-3
I am confused also! Here's one I posted earlier this month.
Art
p.s. I guess this is one for the CCIGs (lower case g od). I'll test it if
I can find the time and equipment.
-----Original Message-----
From: Mosley, Arthur [mailto:Arthur.Mosley@wang.com]
Sent: Sunday, March 12, 2000 11:54 PM
To: 'ccielab@groupstudy.com'
Subject: DLSW clarification on mac address filter/ICANREACH exchange
Are the masks for mac address filters and ICANREACH commands the opposite of
each other? I cannot find a good example that explains the ICANREACH mask.
Art
Vendor code filter - filters explorer packets sent out from router
vendor portion/any portion of Mac address
700-799 48-bit MAC address access list
access-list 704 deny 0260.8c00.0000 0000.00FF.FFFF - deny's 3Com NICs
access-list 704 permit 0000.0000.0000 FFFF.FFFF.FFFF - permit all others
dmac-output-list - mac address filter
F's are don't care
0's must match
ICANREACH - will prevent a router from sending out an explorer packet
because it is learned during the capabilities exchange process.
dlsw icanreach mac-address 0006.e9db.31ce mask ffff.ffff.ffff
F's mush match
>From Configuring Cisco Routers for Bridging, DLSw+ & Desktop Protocols
Mcgraw-Hill publishing - written by Tan Nam-Kee
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