Can Layer 3 switches perform FHRP functions?
Because both active and standby FHRP peers can forward Layer 3 traffic, you do not need to configure an aggressive timer for FHRP to provide faster failover and convergence time if an active FHRP peer fails.
What is peer gateway in vPC?
The Peer-Gateway is a vPC feature that allows vPC peer devices to act as a gateway for traffic addressed to the MAC addresses of their peers.
What is layer 3 routing?
Simply put, a layer 3 switch combines the functionality of a switch and a router. It acts as a switch to connect devices that are on the same subnet or virtual LAN at lightning speeds and has IP routing intelligence built into it to double up as a router. This is how a layer 3 switch acts as both a switch and a router.
What are two benefits of FHRP?
Networking
- Assurance and Insights.
- Storage networking.
What is STP bridge assurance?
Spanning-tree Bridge Assurance is one of those STP features that help to prevent bridging loops in your network. When bridge assurance is enabled, BPDUs are sent on all interfaces of your switch, including blocked interfaces like the alternate or backup port. Bridge assurance is only supported by PVRST+ and MST.
Is vPC a Layer 2?
We often hear that vPC is a layer-2 technology. But Layer-3 packets can still travel over these vPC links. Consider the example topology below. One host is connected with vPC.
What is vPC nexus?
vPC (Virtual Port-Channel), also known as multichassis EtherChannel (MEC) is a feature on the Cisco Nexus switches that provides the ability to configure a Port-Channel across multiple switches (i.e. vPC peers). vPC is similar to Virtual Switch System (VSS) on the Catalyst 6500s.
Can a Cisco Nexus 5548 switch perform layer 3 forwarding?
When you use a Cisco Nexus 5548 switch or Cisco Nexus 5596UP switch as a default gateway for hosts, you can deploy the First Hop Redundancy Protocol (FHRP) to provide default gateway redundancy. Beginning with Cisco NX-OS Release 5.0 (3)N1 (1b), an active FHRP peer and a standby peer can perform Layer 3 forwarding when you enable vPC.
What happens if a VPC switch fails layer 3?
The peer gateway is disabled on both vPC switches if the Layer 3 module fails on one switch. For topologies with in-band management, the failure of a Layer 3 module means that the connectivity to the management network and the management system is also lost.
How does n5k-2 work in a layer 3 network?
With the failure of the Layer 3 module, N5k-2 functions as a Layer 2 switch. It forwards the traffic to N5k-1, which forwards the traffic to the Layer 3 network. The return traffic is sent to N5k-1, which sends the traffic directly to the hosts. Note Only the Layer 3 traffic needs to cross the peer link.