Cisco Cisco ISA550W Integrated Security Appliance Release Note

3

The following table lists the known issues in version 1.1.13 . As with any upgrade, 
review these known issues before upgrading the firmware.

CSCua43844

The Usage Report may display the public IP addresses 
instead of the private IP addresses on the LAN. Typically 
this issue occurs after topology changes, especially for 
WAN Interfaces.

CSCuc40174

Interaction between Spanning Tree Protocol (STP) and 
Cisco Discovery Protocol (CDP) can cause a traffic 
outage when STP blocks a port due to a physical loop in 
the network.

Work Around: Remove the physical loop, or disable STP, 
CDP, or both features.

CSCuc47788

The Bandwidth Usage Report by IP Address displays the 
server’s public IP address instead of the SSLVPN client’s 
IP address.

CSCuc89697

Sometimes a mobile phone using AnyConnect Mobile 
Client loses connectivity.

CSCud06033

When the VRRP priority is changed, the update is not sent 
to the PC. For example, after adjusting the priority to 
make one router act as a backup, both routers may act as 
the master.

Work Around: Disable STP.

CSCud10160

UPNP processes may cause the CPU to run at 100%.

Work Around: Open the Device Management > 
Discovery Protocols > UPnP page, disable UPnP, and then 
enable it again.

CSCub91801 

With AnyConnect 3.1.00496 or above releases, SSL VPN 
connection may fail during MTU renegotiation.

Work Around: Change the MTU size to default value of 
1500 on the PC.