After IOS upgrade to 12.4(4)T on my 2811 router that among other things serves as IOS VPN Server for Cisco VPN clients I'm able to connect and work with hosts located in my corporate LAN fast as I was before IOS upgrade, but when I telnet into any of devices (cisco or not) I get unacceptable slow response. I'm pretty familiar with QoS stuff such as traffic shaping or policing and there is no any config on this router that could affect telnet traffic to work such slow. If I try to connect to some internal smtp servers using 'telnet host 25' it works fast. SSH also works fine. If I don't telnet trough IPSec tunnel it also works fine. I repeat that everything was ok before IOS upgrade. I'll contact TAC about this tomorrow...
Anyone already affected by this?
B.R. Igor