02-12-2004 09:58 PM - edited 02-21-2020 01:02 PM
I have a WAN link between two IOS routers that will be encrypting all traffic via IPsec. I need to prioritise traffic across this link.
I'm aware of two methods I can use:
a) priority queuing and qos pre-classify
b) manipulation of diffserv bits (TOS) and service policies
One of the routers is running 12.1.22b(GD) and cannot be upgraded to 12.2.
Neither of the above mechanisms appear to be available in 12.1 GD.
Can anyone suggest another way I can achieve this with IOS 12.1 GD?
Thanks in advance for any suggestions.
02-18-2004 11:39 AM
Priority queuing is available with 12.1 and you could use this feature. Below is the link to the QoS configuration guide for 12.1. It'll help you with the options that are available.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/qos_c/index.htm
02-18-2004 02:16 PM
Thanks for that.
I've worked out how I can set IP Precedence bits on the ingress of the IOS12.1 router via route-map, however, I don't know how to manage the traffic on the egress interface, given that all traffic is within an IPsec tunnel, and I cannot see how I can define more than one class. (eg how I could define classes according to IP Precedence bit)
So I end up with one class say IPsecTunnel, and then try and manage congestion within a single class.
eg.
interface Ethernet0/0
ip policy route-map IPsetPrecedence
route-map IPsetPrecedence permit 10
match ip route-source IP-Precedence1-acl
set ip precedence priority
!
route-map IPsetPrecedence permit 20
match ip route-source IP-Precedence2-acl
set ip precedence immediate
interface Serial3/2.1
service-policy output WBC-WANlink
crypto map LOCALMAP
policy-map WBC-WANlink
class IPsecTunnel
bandwidth percent 100
random-detect
random-detect precedence 1 64 256 100
random-detect precedence 2 96 256 100
class-map IPsecTunnel
match protocol ip
Is there a better way? (other than upgrading to IOS 12.2 and using classes based on dscp value
Thanks in advance for any advice.
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