type-code 16-bit hexadecimal number written with a leading 0x; for
example, 0x6000. You can specify either an Ethernet type code for
Ethernet-encapsulated packets, or a DSAP/SSAP pair for 802.3 or
802.5-encapsulated packets. Ethernet type codes are listed in the appendix
Ethernet Type Codes.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/8rb
ook/8rtypeco.htm
wild-mask 16-bit hexadecimal number whose ones bits correspond to bits in
the type-code argument that should be ignored when making a comparison. (A
mask for a DSAP/SSAP pair should always be at least 0x0101. This is because
these two bits are used for purposes other than identifying the SAP codes.)
Examples
The following example permits only LAT frames (type 0x6004) and filters out
all other frame types:
access-list 201 permit 0x6004 0x
The following example filters out only type codes assigned to Digital
(0x6000 to 0x600F) and lets all other types pass:
access-list 202 deny 0x6000 0x600F
access-list 202 permit 0x 0x
Use the last item of an access list to specify a default action; for
example, permit everything else or deny everything else. If nothing else in
the access list matches, the default action is normally to deny access; that
is, filter out all other type codes.
Manoj Sekhar Hi all,
I have client want to connect two Branch offices using DDR and
access a netbios based program form one branch to the server
on the other branch. They got one 801 and 803 with ip only IOS.
The DDR is configured with IP and the routers are getting
connected over ISDN. Now the netbios program is the problem.
I thought of two options a) use IP tunnel and b) Transperant Bridging.
I was looking in the Cisco Cd for the info and got the explanation
and sample config on transperant bridging. But one point of defining
interesting traffic I couldn't grasp. The info from the CD is as given
below
access list access-list-no {permit|deny}type-code[mask]
(Permits packets according to ethernet type code)
The corresponding line in sample config was
access-list permit 0x0800 0xFFF8
Can anyone please explain type-code and mask in the command
and the values in the sample config.
Hope the background info doesn't bother you.
Thanks in advance
Manoj
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