getting huge number tcp-retransmissions 7& TCP Dup ACK packets.
I was working with a issue, in which we were observing that the citrix application page is freezing intermittently for 5-10secs and again working without any discosnnections.
On troubleshooting I did nt observe any abnormal latency or packet loss on the GRE tunnel from source vlan till server destiantions.
The citrix traffic flows via a GRE tunnel to remote location then via plain internet flows to a internet facing citrix server behind a firewall.
On analyzing the traffic using Ethereal I have observed huge number of duplicate ACK packets and TCP retransmissions, hence i derived it has some thing to do with packet fragmentations.Hence I modified that TCP MSS size to 1400 from 1412.
Hence I modified the GRE tunnel configs as below
Router#sh run int tu 691
ip address X.X.X.41 255.255.255.252
ip mtu 1500
ip tcp adjust-mss 1400
tunnel source Loopback69
tunnel destination X.X.X.X
Still there is intermittent issue.Can you pls help me to find out where excatly the issue can lie.
VMware Trunk Port Group is supported from ACI version 2.1
VMM integration must be configured properly
ASA device package must be uploaded to APIC
ASAv version must be compatible with ACI and device package version
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