Difference between HSRP, VRRP and GLBP Protocols, Hot Standby Router Protocol, Virtual Router Redundancy Protocol, Gateway Load Balancing Protocol. Used Port: UDP port no-1985: Protocol no-112: UDP port no-3222: Timers. IP6 Support: Yes: No: Yes: Virtual MAC Address: HSRP version 1- 0000. HSRP version 2- 0000. Hot Standby Router Protocol. HSRP routers sends its hello messages to the '224.0.0.2' (all routers) multicast address for version 1 or '224.0.0.102' for version 2 by using 'UDP port 1985' to other HSRP-enabled routers, which defines the priority between the routers.
Network system for establishing a fault-tolerant default gatewayIn computer networking, the Hot Standby Router Protocol ( HSRP) is a redundancy protocol for establishing a. Version 1 of the protocol was described in in 1998. There is no RFC for version 2 of the protocol.The protocol establishes an association between gateways in order to achieve default gateway failover if the primary gateway becomes inaccessible. HSRP gateways send hello messages to other gateways to notify them of their priorities (which gateway is preferred) and current status ( active or standby). Contents.Operation The primary router with the highest configured priority will act as a virtual router with a pre-defined gateway IP address and will respond to the or request from machines connected to the LAN with a virtual.
This section does not any. Unsourced material may be challenged. ( June 2019) Version 2 of the protocol introduces stability, scalability and diagnostic improvements. It is not compatible with version 1 HSRP.
There is no RFC for version 2 of the protocol. Provides IPv6 support. Increases the number of HSRP groups from 256 to 4096See also. standards-based alternative to HSRP. Cisco proprietary router redundancy solution providing load balancing.
open source, patent-free and unrestricted alternative to HSRP and VRRP. List of default gateway redundancy protocolsReferences.
A friend of mine trying to filter or block the hsrp multicast traffic over a QnQ trunk link because it is causing some issue on the network. Can you please advise if there is any possibility to block the hsrp multicast over trunk link.Here is the scenario.We have two DCs, lets assume DCA and DCB and there is QnQ link has been setup between two and all the vlans are going across that link and HSRP is using VLAN 10 and same group 10 on both sites, we dont want to change either the group or vlan.Please let me know your thoughts on this and feel free to ask for more information.Thank you in advance.
Hi JamieI am actually the friend that Muhammed has posted this on behalf of.I have managed to finally get this working with proper hardware, to over come the limitations of emulated equipment. The VACL would have been a good idea, but it would have also probably blocked the legitimate HSRP traffic between Switch 1 and Switch 2 at Site A (and also at site B). So really it had to be done with IP based ACLs on the trunk link itself.I cant have the ACLs in an outgoing direction, so I guess I'll have to live with the superfluous traffic going across the link, but using the ACL (as suggested by Daniel):access-list 101 deny tcp any eq 1985 host 224.0.0.2access-list 101 deny udp any eq 1985 host 224.0.0.2access-list 101 permit ip any anyif this is placed at both ends of the trunk the HSRP messages from one side don't 'override' the settings on the other side, still seeing the traffic but thats something I'll have to live with.ThanksStuart.