Examples - ELSA LANCOM Business Manuel De L'utilisateur

R10 6 ELSA LANCOM Business Internal
is sent first. On the other hand, there is the possibility that a packet already in the send
queue will be removed from it again to make room for the IP packet that is to be sent (see
above).
Packets that are already in the secured or urgent queue are not rejected. If there is no
longer a packet in the normal send, secured or urgent queue, no more packets can be
sent. Received IP packets are therefore rejected even with the D or R bit set.

Examples

With the setting
Setup/IP-router-module/Routing-method/IP TOS
the 'Type of Service' field of the IP header of a received packet is evaluated as described
above, ie IP packets with set D bit are placed in the urgent queue and packets with set
R bit in the secured queue. All other packets are placed in the normal send queue.
This means simultaneously that any "normal" IP packets from "secured" or "urgent"
packets can be removed (with maximum filling of the send queue of this connection) or
changes in the packet sequence can be made.
In the 'normal' setting all IP packets are treated equally, in accordance with the routing
regulations of the Internet protocol.
With the setting
Setup/IP-router-module/Routing-method/ICMP-routing-method
all received ICMP packets are transmitted as if they had the R bit in the 'Type of Service'
field of the IP header. (see above)
This means that the secured transmission of ICMP packet may result in errors in other
data flows. The latency period of the router is however not influenced, because the ICMP
packet is taken into the send queue as the last in spite of this.
With the 'normal' setting ICMP packets are treated like all other IP packets in accordance
with the routing regulations of the Internet protocol.
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