From: asadovnikov (asadovnikov@comcast.net)
Date: Sun Feb 15 2004 - 23:02:36 GMT-3
I think it refers to direct encapsulation, not to FST encapsulation (see a
note at the very end of the example section under
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos
_r/qrfcmd6.htm#1036440).
Otherwise I agree with Scott, it is a common mistake and will do no good for
TCP encapsulation.
Best regards,
Alexei
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: Sunday, February 15, 2004 11:11 AM
To: 'Michael Snyder'; ccielab@groupstudy.com
Subject: RE: Access-list for DLSW port numbers.
That's a common mistake... This use of "dlsw" as a protocol refers to FST
encapsulation. Doesn't do anything for TCP encapsulation.
FST isn't really tied to UDP or TCP, it's kind of it's own little IP
sub-protocol.
The nomenclature could be a little more useful, and that would avoid plenty
of confusion... But I guess that would also take all the fun out of it! :)
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIS, et al. IPExpert CCIE Program Manager IPExpert Sr. Technical
Instructor swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Michael Snyder
Sent: Sunday, February 15, 2004 11:00 AM
To: ccielab@groupstudy.com
Cc: 'Scott Morris'
Subject: RE: Access-list for DLSW port numbers.
Hi Scott, thank you for your response.
What's up with this? The requirement was to use a priority-list for dlsw
transit traffic between peers.
I did.
priority-list 1 protocol ip high tcp 2065
The solution shows
priority-list 1 protocol dlsw high
Ok, what port(s) does this command cover? I have a very hard time believing
it is doing some level 4 check, which means just has to be doing some ports.
TCP 2065, 1981-1983, what about fst? I'm guessing that fst is an udp rtp
protocol. In fact I don't think I've ever seen a reference to fst being a
protocol or udp port.
It bugs me because dlsw isn't a protocol like ipx or appletalk, it shouldn't
be listed this way. It could be the local dlsw layer 2 stuff on the lan
interface, but that wouldn't apply to transit remote peer traffic.
Thanks in advance,
Michael
------------------------------------------------------------------------
R7(config)#priority-list 1 protocol ?
aarp AppleTalk ARP
apollo Apollo Domain
appletalk AppleTalk
arp IP ARP
bridge Bridging
bstun Block Serial Tunnel
cdp Cisco Discovery Protocol
clns ISO CLNS
clns_es ISO CLNS End System
clns_is ISO CLNS Intermediate System
cmns ISO CMNS
compressedtcp Compressed TCP
decnet DECnet
decnet_node DECnet Node
decnet_router-l1 DECnet Router L1
decnet_router-l2 DECnet Router L2
dlsw Data Link Switching
ip IP
ipx Novell IPX
llc2 llc2
pad PAD links
pppoe PPP over Ethernet
qllc qllc protocol
rsrb Remote Source-Route Bridging
snapshot Snapshot routing support
stun Serial Tunnel
vines Banyan VINES
xns Xerox Network Services
R7(config)#priority-list 1 protocol dlsw h R7(config)#priority-list 1
protocol dlsw ?
high
medium
normal
low
R7(config)#priority-list 1 protocol dlsw high
-----Original Message-----
From: Scott Morris [mailto:swm@emanon.com]
Sent: Sunday, February 15, 2004 8:53 AM
To: 'Michael Snyder'; ccielab@groupstudy.com
Subject: RE: Access-list for DLSW port numbers.
The ports 1981, 1982 and 1983 are ONLY involved when you are using the
"priority" feature. Otherwise, in a standard configuration, 2065 is the
only one used. You'll just have to figure out which direction your
connection is going! :)
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIS, et al. IPExpert CCIE Program Manager IPExpert Sr. Technical
Instructor swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Michael Snyder
Sent: Sunday, February 15, 2004 1:08 AM
To: ccielab@groupstudy.com
Subject: Access-list for DLSW port numbers.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1826/products_feature_
guide09186a0080080ed8.html
I'm trying to figure out which port numbers I need just for normal tcp dlsw
traffic.
Is it safe to say that 2065 and 1982 is the only ones needed for normal dlsw
configs?
priority
(Optional) Enables prioritization features for this remote peer. Valid TCP
port numbers are the following: . High-2065 . Medium-1981 . Normal-1982 .
Low-1983
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