From: Alexander Arsenyev (GU/ETL) (alexander.arsenyev@ericsson.com)
Date: Mon Apr 19 2004 - 06:13:35 GMT-3
Hello all,
I've been trying to understand how queueing on subinterfaces works and came to the following conclusion: if shaping is not enabled then there is no per-subinterface queueing. Cisco DQOS book chapter 4 section "Queueing on Interfaces versus Subinterfaces and Virtual Circuits" page 245 says:
<quote>
IOS also supports queueing on subinterfaces and individual VCs when traffic shaping is also enabled"
</quote>
Therefore when meeting a task which asks for Custom Queueing to be enabled on single Frame Relay PVC on multipoint interface I think that the following is an invalid config:
queue-list 1 queue 1 protocol ip tcp telnet
queue-list 1 queue 2 protocol ip tcp ftp
queue-list 1 default 3
queue-list 1 queue 1 byte-limit 3000
queue-list 1 queue 2 byte-limit 3000
queue-list 1 queue 3 byte-limit 1500
class-map frame-relay FR_CQL
frame-relay custom-queue-list 1
interface Serial0/0
no ip address <--- note FRTS is NOT enabled
encapsulation frame-relay
no frame-relay inverse
no arp frame-relay
interface Serial0/0.1 multipoint
ip address 10.10.10.1 255.255.255.0
frame-relay map ip 10.10.10.2 102 broadcast
frame-relay map ip 10.10.10.3 103 broadcast
frame-relay interface-dlci 102
class FR_CQL
I could not find a command which confirms that Custom Queueing is enabled on PVC 102. "show queueing" does NOT take subinterface/DLCI as parameter.
If we have FRTS enabled on main interface S0/0 then "sh traffic-shape" shows us that CQ is indeed enabled on PVC 102.
Inference - if asked to have CQ/PQ enabled on a "link between router X and router Y" then check whether that router pair is connected via multipoint interface(s) and enable Traffic Shaping on main interface (watch for default traffic shaping parameters here) together with building a queue-list and assigning it to subinterface/PVC.
Anyone agree?
> Thanks and regards,
>
> Alexander Arsenyev
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