Cpu Utilization - MikroTik RouterOS v2.9 Reference Manual

• default - derive this value from the interface default profile; same as no if this is the interface
default profile
use-vj-compression ( yes | no | default ; default: default ) - specifies whether to use Van Jacobson
header compression algorithm
• yes - enable Van Jacobson header compression
• no - disable Van Jacobson header compression
• default - derive this value from the interface default profile; same as no if this is the interface
default profile
wins-server ( IP address ) - IP address of the WINS server to supply to Windows clients
Notes
There are two default profiles that cannot be removed:
[admin@rb13] ppp profile> print
Flags: * - default
0 * name="default" use-compression=no use-vj-compression=no use-encryption=no
only-one=no
change-tcp-mss=yes
1 * name="default-encryption" use-compression=default use-vj-compression=default
use-encryption=yes
only-one=default change-tcp-mss=default
[admin@rb13] ppp profile>
Use Van Jacobson compression only if you have to because it may slow down the communications
on bad or congested channels.
incoming-filter and outgoing-filter arguments add dynamic jump rules to chain ppp, where the
jump-target argument will be equal to incoming-filter or outgoing-filter argument in /ppp
profile. Therefore, chain ppp should be manually added before changing these arguments.
only-one parameter is ignored if RADIUS authentication is used.
If there are more that 10 simultaneous PPP connections planned, it is recommended to turn the
change-mss property off, and use one general MSS changing rule in mangle table instead, to reduce

CPU utilization.

Example
To add the profile ex that assigns the router itself the 10.0.0.1 address, and the addresses from the
ex pool to the clients, filtering traffic coming from clients through mypppclients chain:
[admin@rb13] ppp profile> add name=ex local-address=10.0.0.1 remote-address=ex
incoming-filter=mypppclients
[admin@rb13] ppp profile> print
Flags: * - default
0 * name="default" use-compression=no use-vj-compression=no use-encryption=no
only-one=no
change-tcp-mss=yes
1 name="ex" local-address=10.0.0.1 remote-address=ex use-compression=default
use-vj-compression=default use-encryption=default only-one=default
change-tcp-mss=default
incoming-filter=mypppclients
2 * name="default-encryption" use-compression=default use-vj-compression=default
use-encryption=yes
only-one=default change-tcp-mss=default
[admin@rb13] ppp profile>
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