NS3 DCE and ip commands

[Dattaraj Vernekar]

Hi,

i am using ns3-DCE dev version with net-next-sim-3.14.0 version with iperf-2.6.38.
When i run the "ip addr show command" i get the following output:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: sit0: <NOARP> mtu 1480 qdisc noop state DOWN
    link/sit 0.0.0.0 brd 0.0.0.0
3: ip6tnl0: <NOARP> mtu 1452 qdisc noop state DOWN
    link/tunnel6 :: brd ::
4: sim0: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether 00:00:00:00:00:01 brd ff:ff:ff:ff:ff:ff
    inet 10.1.1.1/30 scope global sim0
       valid_lft forever preferred_lft forever
    inet6 fe80::200:ff:fe00:1/64 scope link
       valid_lft forever preferred_lft forever

My issue is the sim0 device has " mtu 1500 qdisc noqueue state UNKNOWN " where as if i run the same command on a linux pc i get the following output:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
    link/ether 28:d2:44:3d:a5:3c brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 40:f0:2f:57:45:26 brd ff:ff:ff:ff:ff:ff
    inet 10.50.45.124/22 brd 10.50.47.255 scope global wlan0
       valid_lft forever preferred_lft forever
    inet6 fe80::42f0:2fff:fe57:4526/64 scope link
       valid_lft forever preferred_lft forever

So the etho has " mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000".

I want to set pfifo_fast queue for the sim0 in ns3 DCE.

I have tried using simple tc commands like : "tc qdisc ls dev sim0", but they result in following error :

RTNETLINK answers: No such file or directory
Dump terminated

Is it possible to make tc commands work in DCE?

[Dattaraj Vernekar]

CORRECTION it is iproute-2.6.38