Contents
Does HSRP load balance?
Only one active and one standby router are allowed per HSRP group. Thus, HSRP provides Layer-3 redundancy, but no inherent load balancing.
What is asymmetric route support?
4.0 introduces support for asymmetric routing. Asymmetric routing is when the flow of packets in one direction passes through a different interface than that used for the return path. Routers forwarding packets to networks through the cluster may choose any of the Cluster Nodes as the next-hop.
What is meant by HSRP?
In computer networking, the Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway.
When does asymmetric routing occur in a firewall?
Asymmetric routing is when the flow of packets in one direction passes through a different interface than that used for the return path. This can occur when traffic flows across different layer 2 bridged pair interfaces on the firewall or when it flows across different firewalls in a high availability cluster.
How does asymmetric routing work in a cluster?
The result is asymmetric routing, in which the flow of packets in one direction go through a node different than that used for the return path. This difference in flow causes traffic to be dropped by one or both Cluster Nodes as neither is “seeing” all of the traffic from the flow.
What happens if an active router fails to run HSRP?
If the active router fails, the standby assumes the packet forwarding duties. Although an arbitrary number of routers may run HSRP, only the active router forwards the packets that are sent to the virtual router IP address.
Which is the only address available for HSRP?
These three addresses are the only addresses available for use with HSRP: Therefore, you can configure only three HSRP groups on Token Ring interfaces, unless you configure the standby use-bia parameter. HSRP peer routers that protect a subnet are able to provide access to all other subnets in the network.