Hi,
I have a requirement to ensure all traffic across certain links have
particular CoS markings. Applying QoS polices on the links works but
doesn't capture router originated traffic - BGP, ARP, IPv6 ND etc.
As a potential solution I have tested using IPv4 and IPv6 PBR to force
router traffic via lo0
route-map LP permit 10
set interface Loopback0
ip local policy route-map LP
ipv6 local policy route-map LP
and have set a QoS policy on lo0
interface Loopback0
service-policy input LOOP0-IN
this sets a qos-group which is matched the outgoing non-loopback
interface and sets CoS as required.
As far as I can tell it works pretty well but I have a few questions
1) I don't think this works for ARP. I tried to match protocol arp
using the loopback0 policy but
router(config-if)#service-policy input LOOP0-IN
'match protocol arp' is not supported on input service-policy
is there anyway to set the CoS value for ARP traffic from the router,
ideally only on some interfaces?
2) Is this configuration going to kill my router - maybe I am forcing
some process switching?
Thanks
Ivan
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