Hello list,
I'm trying to perform traffic shaping on tunnel type gre interface with
Linux-2.2.18. Everything is ok, traffic spikes very sharp (i.e. on bursts with
pauses between). After closer look I found that tunnel devices have not queue
at all:
1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 100
link/ether 00:80:ad:88:36:cd brd ff:ff:ff:ff:ff:ff
46: gre0@NONE: <NOARP> mtu 1476 qdisc noop
link/gre 0.0.0.0 brd 0.0.0.0
47: tunnel0@NONE: <POINTOPOINT,NOARP,UP> mtu 1476 qdisc cbq
link/gre xx.xx.xx.17 peer xx.xx.xx.21
So I decide to try seting queue lenght manualy:
ip link set tx 100 dev tunnel0
47: tunnel0@NONE: <POINTOPOINT,NOARP,UP> mtu 1476 qdisc cbq qlen 100
link/gre xx.xx.xx.17 peer xx.xx.xx.21
After reinitiating cbq traffic flaw smoothly at shaped rate. But where's the
catch? Why tunnel interfaces have not queue by default?
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Theodor Milkov Administrator IP Networks
Davidov Electric Ltd. Phone: +359 (2) 730158
PGP: http://www.zimage.delbg.com/zimage.asc
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