HSRP version 1:-
·
Maximum number of group supported –256 ( 0 -255
)
·
Mac used – 0000.0c07.ac00 to 0000.0c07.acff (which
can conflict with CGMP leave processing)
·
Hello packet multicast address is 224.0.0.2
· Default version
( in both catalyst and Nexus switches )
· Only Text authentication with cisco password is supported.
· Millisecond Timers are not advertised or learned.
· The active router will send hello messages with source MAC address of the HSRP virtual MAC address
.
· Millisecond Timers are not advertised or learned.
· The active router will send hello messages with source MAC address of the HSRP virtual MAC address
.
HSRP version 2:-
·
Maximum number of group supported – 4096 ( 0 –
4095 ).
·
Mac address used – 0000.0c9f.f000 – 0000.0c9F.FFFF.
·
Hello packet multicast address 224.0.0.102 which
removes the problem with version1
·
Need to enable version 2 explicitly.
·
Supports MD5 authentication
· Millisecond Timers can be advertised or learned.
· The active router will send hello messages with source MAC address of the interface MAC address.
· The active router will send hello messages with source MAC address of the interface MAC address.
Note :-
- HSRP version 1 and 2 have different Packet format
- Both are not compatible to each other. Both side of interface must have identical version.
Mac address is in a wrong format and there is missing a letter
ReplyDeleteMac address used – 0000.0c9f.f000 – 0000.0c9ffff
Should be:
Mac address used – 0000.0c9f.f000 – 0000.0c9f.ffff
What about the msec timers that hsrp v2 provide?
ReplyDeleteHSRP Versions
ReplyDeleteThere are two versions of HSRP: version 1 and version 2. The difference between them in terms of general functionality is small, but there are several improvements that Cisco made when updating to version 2. Some of these improvements include:
HSRP version 2 now advertises and learns millisecond timer values, improving the stability of HSRP.
The total number of HSRP group numbers increases from 256 to 4096 (not necessarily to utilize this many groups on a single interface, but to match local VLAN numbers—on sub-interfaces—for easy troubleshooting and documentation).
HSRP version 2 includes the addition of an identifier field (which contains the physical MAC address of the source) within the HSRP packet that allows the ability to easily track which device sent an HSRP packet (this is because the active HSRP router will send traffic using the virtual MAC address).
HSRP version 2 changes the multicast address that is used for HSRP communication to avoid conflict with Cisco Group Management Protocol (CGMP).
Some other differences are not really improvements, per se. HSRP version 1 utilizes the MAC address range from 0000.0C07.AC00 through 0000.0C07.ACFF (00 = Group 0, FF = Group 255), while HSRP version 2 utilizes the MAC address range from 0000.0C9F.F000 through 0000.0C9F.FFFF (000 = Group 0, FFF = Group 4095). HSRP version 1 uses the multicast address 224.0.0.2, while HSRP version 2 uses the multicast address 224.0.0.102. HSRP version 1 and version 2 are not compatible and use different packet formats.
that is a truh differences
ReplyDelete