Cisco ASA 5540 User Manual

1-17
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring a Cluster of ASAs
Information About ASA Clustering
Rebalancing New TCP Connections Across the Cluster
If the load balancing capabilities of the upstream or downstream routers result in unbalanced flow
distribution, you can configure overloaded units to redirect new TCP flows to other units. No existing
flows will be moved to other units.
ASA Features and Clustering
• Unsupported Features, page 1-17
• Centralized Features, page 1-18
• Features Applied to Individual Units, page 1-18
• Dynamic Routing, page 1-19
• NAT, page 1-21
• Syslog and Netflow, page 1-22
• SNMP, page 1-22
• VPN, page 1-22
• FTP, page 1-23
• Cisco TrustSec, page 1-23
Unsupported Features
These features cannot be configured with clustering enabled, and the commands will be rejected.
• Unified Communications
• Remote access VPN (SSL VPN and IPsec VPN)
• The following application inspections:
– CTIQBE
– GTP
– H323, H225, and RAS
– IPsec passthrough
– MGCP
– MMP
– RTSP
– SIP
– SCCP (Skinny)
– WAAS
– WCCP
• Botnet Traffic Filter
• Auto Update Server
• DHCP client, server, relay, and proxy
• VPN load balancing

Cisco ASA 5540 Specifications

General

Firewall Throughput	650 Mbps
Maximum Firewall Connections	400, 000
VPN Throughput	225 Mbps
Maximum VPN Peers	5, 000
High Availability	Active/Active, Active/Standby
IPSec VPN Throughput	225 Mbps
Memory	1 GB
IPS Throughput	225 Mbps
Security Contexts	50
Flash Memory	64 MB
Form Factor	1U
Power Supply	Dual
Interfaces	4 x 10/100/1000 Ethernet