From: robj (rob@warnerbeach.com)
Date: Sun Oct 16 2005 - 12:29:59 GMT-3
Is it possible without using radius or gre tunnels to apply outbound service
policys on an router which is acting as an LNS on a per user basis (per
virtual acces interface)?
Im trying to figure out how you could apply an end to end qos policy over
PPPoATM for LLQ in either direction
bearing in mind LLQ is an outbound capable only
Example Client CPE
I can run a service policy on the outbound of the dialer to ensure
prioritisation when leaving the WAN
interface Dialer1
bandwidth 256
ip address negotiated
service-policy output QOS
ip access-group 116 in
ip mtu 1440
ip audit xx in
max-reserved-bandwidth 100
encapsulation ppp
ip tcp adjust-mss 1390
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname xxxxxx/xxxxxxxx
ppp chap password xxxxxxxxxxxxxxxxxx
I appreciate I have no control of the qos once its on the dsl cloud!
on the LNS I have multiple CPEs terminated via PPPoATM which all get an
interface spawned from the same virtual template
vpdn-group 1
accept-dialin
protocol l2tp
virtual-template 1
terminate-from hostnamexxxxxxxxxxx
local name xxxxxxxxxxxx
lcp renegotiation on-mismatch
source-ip xxxxxxxxxxxx
interface Virtual-Template1
ip unnumbered FastEthernet1/0
service-policy output QOS
no peer default ip address
ppp authentication chap callin
Now I need to ensure that the outbound return traffic the other end of the
ppp conection gets priority but I have multiple outbound virtual interfaces
cloned from the virtual template so am struggling to see how to acheive
this. Unless i assume that the multiple CPEs are all 512k upstream and I
apply a generic policy on the virtual template for everybody , but this
doesnt scale if i have a mixture of upstream bandwidth ADSL technologies. I
cant use multiple templates as you can only bind one template to one vpdn
domain
I cant find any information on Cisco to be able to acheive this. I know in
radius i could use an av-pair for service policy parameters but want a
solution that can be configured on the router for acceptance testing
reasons.
Has anyone tried to do this previously or can anyone help point me in the
right direction?
Hope I made sense:-)
Thanks in advance
!
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