| cHsrpGrpNumber |
.1.3.6.1.4.1.9.9.106.1.2.1.1.1 |
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This object along with the ifIndex of a particular interface
uniquely identifies an HSRP group.
Group numbers 0,1 and 2 are the only valid group numbers
for TokenRing interfaces. For other media types, numbers
range from 0 to 255. Each interface has its own set of group
numbers. There's no relationship between the groups configured
on different interfaces. Using a group number on one interface
doesn't preclude using the same group number on a different
interface. For example, there can be a group 1 on an Ethernet
and a group 1 on Token Ring. More details can be found from
RFC 2281.
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| cHsrpGrpAuth |
.1.3.6.1.4.1.9.9.106.1.2.1.1.2 |
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This is an unencrypted authentication string which is
carried in all HSRP messages. An authentication string
mismatch prevents a router interface from learning the
designated IP address or HSRP timer values from
other HSRP-enabled routers with the same group number.
The function of this object is not to supply any sort of
security-like authentication but rather to confirm that what's
happening is what's intended. In other words, this is meant for
sanity checking only.
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| cHsrpGrpPriority |
.1.3.6.1.4.1.9.9.106.1.2.1.1.3 |
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The cHsrpGrpPriority helps to select the active
and the standby routers. The router with the highest priority
is selected as the active router. In the priority range of
0 to 255, 0 is the lowest priority and 255 is the highest
priority.
If two (or more) routers in a group have the same priority,
the one with the highest ip address of the interface is the
active router. When the active router fails to send a Hello
message within a configurable period of time, the standby
router with the highest priority becomes the active router.
A router with highest priority will only attempt to overthrow
a lower priority active router if it is configured to preempt.
But, if there is more than one router which is not active, the
highest priority non-active router becomes the standby router.
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| cHsrpGrpPreempt |
.1.3.6.1.4.1.9.9.106.1.2.1.1.4 |
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This object, if TRUE, indicates that the current router
should attempt to overthrow a lower priority active
router and attempt to become the active router. If this
object is FALSE, the router will become the active router only
if there is no such router (or if an active router fails).
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| cHsrpGrpPreemptDelay |
.1.3.6.1.4.1.9.9.106.1.2.1.1.5 |
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This delay is the time difference between a router power up
and the time it can actually start preempting the currently
active router.
When a router first comes up, it doesn't have a complete
routing table. If it's configured to preempt, then it will
become the Active router, but it will not be able to provide
adequate routing services. The solution to this is to allow
for a configurable delay before the router actually preempts
the currently active router.
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| cHsrpGrpUseConfiguredTimers |
.1.3.6.1.4.1.9.9.106.1.2.1.1.6 |
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HSRP routers learn a group's Hellotime or Holdtime from hello
messages.
The Hellotime is used to determine the frequency of
generating hello messages when this router becomes the active
or standby router. The Holdtime is the interval between the
receipt of a Hello message and the presumption that the
sending router has failed.
If this object is TRUE, the cHsrpGrpConfiguredHelloTime and
cHsrpGrpConfiguredHoldTime will be used. If it is FALSE,
the Hellotime and Holdtime values are learned.
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| cHsrpGrpConfiguredHelloTime |
.1.3.6.1.4.1.9.9.106.1.2.1.1.7 |
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If cHsrpGrpUseConfiguredTimers is true,
cHsrpGrpConfiguredHelloTime is used when this router is an
active router. Otherwise, the Hellotime learned from the
current active router is used. All routers on a particular
LAN segment must use the same Hellotime.
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| cHsrpGrpConfiguredHoldTime |
.1.3.6.1.4.1.9.9.106.1.2.1.1.8 |
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If cHsrpGrpUseConfiguredTimers is true,
cHsrpGrpConfiguredHoldTime is used when this router is an
active router. Otherwise, the Holdtime learned from the
current active router is used. All routers on a particular
LAN segment should use the same Holdtime. Also, the Holdtime
should be at least three times the value of the Hellotime and
must be greater than the Hellotime.
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| cHsrpGrpLearnedHelloTime |
.1.3.6.1.4.1.9.9.106.1.2.1.1.9 |
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If the Hellotime is not configured on a router, it can be
learned from the Hello messages from active router, provided
the Hello message is authenticated. If the Hellotime is not
learned from a Hello message from the active router and it
is not manually configured, a default value of 3 seconds is
recommended.
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| cHsrpGrpLearnedHoldTime |
.1.3.6.1.4.1.9.9.106.1.2.1.1.10 |
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If the Holdtime is not configured on a router, it can be
learned from the Hello message from the active router.
Holdtime should be learned only if the Hello message is
authenticated. If the Holdtime is not learned and it is not
manually configured, a default value of 10 seconds is
recommended.
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| cHsrpGrpVirtualIpAddr |
.1.3.6.1.4.1.9.9.106.1.2.1.1.11 |
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This is the primary virtual IP address used by this group.
If this address is configured (i.e a non zero ip address),
this value is used. Otherwise, the agent will attempt to
discover the virtual address through a discovery process
(which scans the hello messages).
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| cHsrpGrpUseConfigVirtualIpAddr |
.1.3.6.1.4.1.9.9.106.1.2.1.1.12 |
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If this object is TRUE, cHsrpGrpVirtualIpAddr was a
configured one. Otherwise, it indicates that
cHsrpGrpVirtualIpAddr was a learned one.
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| cHsrpGrpActiveRouter |
.1.3.6.1.4.1.9.9.106.1.2.1.1.13 |
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Ip Address of the currently active router for this group.
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| cHsrpGrpStandbyRouter |
.1.3.6.1.4.1.9.9.106.1.2.1.1.14 |
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Ip Address of the currently standby router for this group.
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| cHsrpGrpStandbyState |
.1.3.6.1.4.1.9.9.106.1.2.1.1.15 |
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The current HSRP state of this group on this interface.
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| cHsrpGrpVirtualMacAddr |
.1.3.6.1.4.1.9.9.106.1.2.1.1.16 |
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Mac Addresses used are as specified in RFC 2281. For ethernet
and fddi interfaces, a MAC address will be in the range
00:00:0c:07:ac:00 through 00:00:0c:07:ac:ff. The last octet is
the hexadecimal equivalent of cHsrpGrpNumber (0-255).
Some Ethernet and FDDI interfaces allow a unicast MAC address
for each HSRP group. Certain Ethernet chipsets(LANCE Ethernet,
VGANYLAN and QUICC Ethernet) only support a single Unicast
Mac Address. In this case, only one HSRP group is allowed.
For TokenRing interfaces, the following three MAC addresses
are permitted (functional addresses):
C0:00:00:01:00:00
C0:00:00:02:00:00
C0:00:00:04:00:00.
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| cHsrpGrpEntryRowStatus |
.1.3.6.1.4.1.9.9.106.1.2.1.1.17 |
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The control that allows modification, creation, and deletion
of entries. For detailed rules see the DESCRIPTION for
cHsrpGrpEntry.
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