Hi everyone.
I have recently removed an application from a LAN subnet and placed it across the WAN on a Citrix server farm. The LAN subnet is connected to the rest of the company via a wireless bridge and a T1.
LAN A (citrix client) ---T1&Wireless---LAN B--HSSI---LAN C (citrix and application server)My problem is that although the wireless link has 6MBps throughput, it also has high latency. Bulk traffic moves well across the wireless bridge, but interface traffic is very choppy and poor.
I use EIGRP which automatically sends all traffic across the wireless bridge and only uses the T1 if the wireless is down. The wireless bridge is connected to fastEthernet interfaces on either end.
If I shut off the wireless, user interface traffic improves, but bulk traffic suffers. I have tried policy-based routing.
First I attempted to send the traffic to the T1 using port matching for Citrix and Terminal Services:
access-list 101 permit tcp any any eq 1494
access-list 101 permit tcp any any eq 3389
access-list 101 permit udp any any eq 1604
I created a route-map:
description User Interface Traffic
match ip address 101
set interface Serial0/0
and applied it to the FE interface where the client traffic originates:
interface FastEthernet0/0
ip address 10.0.0.1 255.255.255.0
no ip route-cache
no ip mroute-cache
ip policy route-map citrix
Then on the way BACK I set up the route map as such on router B:
access-list 101 permit tcp any 10.0.0.0 0.0.0.255 eq 1494
access-list 101 permit tcp any 10.0.0.0 0.0.0.255 eq 3389
access-list 101 permit udp any 10.0.0.0 0.0.0.255 eq 1604
route-map citrix permit 10
match ip address 101
set interface Serial2/2
interface Hssi3/0
description IMUX to LAN C
bandwidth 6000
ip address 192.168.253.110 255.255.255.252
ip directed-broadcast
no ip route-cache
no ip mroute-cache
ip policy route-map citrix
It seemed to improve performance somewhat, but using only the T1 is still more responsive. When I switch the wireless back on I immediately start getting calls about the performance.
I also tried creating a new access list to send ALL traffic to and from those servers on the t1, and changed the route-map to use access-list 102:
LAN A:
access-list 102 permit ip any host 192.168.110.20
access-list 102 permit ip any host 192.168.110.21
LAN B:
access-list 102 permit ip host 192.168.110.20 10.0.0.0 0.0.0.255
access-list 102 permit ip host 192.168.110.21 10.0.0.0 0.0.0.255
But it *still* isn't as fast as merely using only the T1. Can someone point out what I am doing wrong?
**edited to correct a typo**
