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794
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ip precedence-3640

boblutton
Level 1
Level 1

I'm trying to forward based on IP-precedence bits

pc--->switch--->c1700----->c3640---->3750

The 1700 successfully classifies packets with "ip-precedence critical" (5).

Next step is for Cisco 3640 to prioritize forwarding...how can I do this with a 3640 with older IOS image; this can be upgraded if necessary, but there is limited memory.

On the 3640, do I need an IOS with QOS to "trust" the ip-precedence set on the 1700 ?

Is there a simple way to have the 3640 to forward packets with ip-precedence of 5

2 Replies 2

boblutton
Level 1
Level 1

THis is the route-map in use on the 1700...

It is definately setting the precedence, but when the 3640 gets the packet, how can I force it to read and prioritize the packet ?

route-map prior13net4 permit 20

match ip address 106 107

set ip precedence critical

Joseph W. Doherty
Hall of Fame
Hall of Fame

If your 3640 IOS supports CBWFQ, on your outbound FastEthernet interface (assume Ethernet because of downsteam 3750), you could first try:

policy-map Yourname

interface Fastethernet 0

service policy output Yourname

or

class-map yourclassname

match precedence critical

policy-map Yourname

class yourclassname

priority # (Kbps)

interface Fastethernet 0

service policy output Yourname