Hello my friend,
First of all, let me tell you thanks for your cooperation.
1. I´m using SolarWinds software with NTA module in order to analyze the netstream information.
2. That´s point it´s complicated for me, because the server isn´t under my responsibility. I can connect to server with terminal server as a reader. I checked the firewall and it is desconected. I set up a netstat -anob and I couldn´t see any connection with upd 2055 port.
3.There isn´t any firewall in the middle, although, I will try to check that with again.
4.<Router>disp ip netstream statistic
Origin ingress entries : 108870
Origin ingress packets : 370473
Origin ingress octets : 183357733
Origin egress entries : 106829
Origin egress packets : 388098
Origin egress octets : 225814948
Origin total entries : 215699
Agility ingress entries : 0
Agility ingress packets : 0
Agility ingress octets : 0
Agility egress entries : 0
Agility egress packets : 0
Agility egress octets : 0
Agility total entries : 0
Handle origin entries : 215698
Handle agility entries : 0
Handle As aggre entries : 0
Handle ProtPort aggre entries : 0
Handle SrcPrefix aggre entries : 0
Handle DstPrefix aggre entries : 0
Handle Prefix aggre entries : 0
Handle AsTos aggre entries : 0
Handle ProtPortTos aggre entries : 0
Handle SrcPreTos aggre entries : 0
Handle DstPreTos aggre entries : 0
Handle PreTos aggre entries : 0
5. I changed the sampling to 50
ip netstream sampler fix-packets 50 inbound
ip netstream sampler fix-packets 50 outbound
ip netstream inbound
ip netstream outbound