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David Leutgeb
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MIBS/arista/ARISTA-NEXTHOP-GROUP-MIB
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MIBS/arista/ARISTA-NEXTHOP-GROUP-MIB
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ARISTA-NEXTHOP-GROUP-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY, OBJECT-TYPE,
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Unsigned32, Counter64 FROM SNMPv2-SMI
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MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF
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TEXTUAL-CONVENTION FROM SNMPv2-TC
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aristaMibs FROM ARISTA-SMI-MIB;
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aristaNexthopGroupMIB MODULE-IDENTITY
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LAST-UPDATED "201604170000Z"
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ORGANIZATION "Arista Networks, Inc."
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CONTACT-INFO
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"Arista Networks, Inc.
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Postal: 5453 Great America Parkway
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Santa Clara, CA 95054
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Tel: +1 408 547-5500
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E-mail: snmp@arista.com"
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DESCRIPTION
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"This MIB contains information about NextHop Groups (NHG).
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General L3 routing creates routing table entries, each of
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which are associated with a nexthop. If multiple paths
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exist for a specific route, the route points to a set of
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nexthops (commonly referred as ECMP or Equal Cost
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MultiPath).
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Arista devices support a feature which allows customers to
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manually create a nexthop list, and use this list to
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route packets to the specified set of nexthop
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addresses. Customers can associate a tunnel type (GRE,
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for example) with the nexthop group, allowing relevant
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packets to be tunneled as well. The packet forwarding or
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routing decision happens in hardware.
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Nexthop group feature gives customers full control of how
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a route should be forwarded (tunneled or otherwise). The
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number of entries in the nexthop group is also determined
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by the user, and directly translates to the number of
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nexthop entries in the hardware for the specified route.
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Let's provide an example, looking at EOS CLI example.
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nexthop-group foo type ip-in-ip
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ttl 64
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entry 0 tunnel-destination 10.1.1.1
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entry 1 tunnel-destination 20.1.1.1
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!
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ip route 30.1.1.0/24 Nexthop-Group foo
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In the above configuration, any packet destined to
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30.1.1.0/24 will be forwarded by the nexthop group
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'foo'. Each entry inside the nexthop group specifies a
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particular nexthop ('tunnel destination') chosen by the
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customer. In this example, packets can be forwarded via
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either of the nexthop (traffic split equally between the 2
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entries).
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This MIB module provides information relevant to the
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nexthop group feature, specifically the status of various
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nexthop groups configured, and traffic statistics."
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REVISION "201604170000Z"
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DESCRIPTION
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"Initial revision of the MIB module."
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::= { aristaMibs 21 }
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aristaNexthopGroupMibObjects OBJECT IDENTIFIER
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::= { aristaNexthopGroupMIB 1 }
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aristaNexthopGroupMibConformance OBJECT IDENTIFIER
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::= { aristaNexthopGroupMIB 2 }
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-- Textual Convention
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NexthopGroupName ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "255a"
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STATUS current
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DESCRIPTION
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"Each nexthop group configured by the user is associated with
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a name, by configuration."
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SYNTAX OCTET STRING (SIZE (0..255))
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NexthopGroupType ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A nexthop group is associated with a type, which determines
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the packet forwarding behavior.
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Type 'ip' refers to L3 IP routing. A route pointing to a
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nexthop group in this case is equivalent to multiple static
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route configuration entries each with a particular nexthop.
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Types 'gre', 'mpls', 'ip-in-ip' all refer to tunnel types. In
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this case a route pointing to the specified nexthop group is
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used to tunnel packets using the appropriate encapsulation to
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a tunnel destination. The encapsulation information depends on
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the tunnel type itself."
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SYNTAX INTEGER {
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invalid(0),
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ipInIp(1),
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gre(2),
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mpls(3),
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ip(4),
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mplsOverGre(5)
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}
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-- Nexthop Group table
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aristaNexthopGroupTable OBJECT-TYPE
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SYNTAX SEQUENCE OF AristaNexthopGroupEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table contains information about the nexthop groups
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that are present in the device."
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::= { aristaNexthopGroupMibObjects 1 }
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aristaNexthopGroupEntry OBJECT-TYPE
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SYNTAX AristaNexthopGroupEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"A conceptual row, containing information for a specific
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nexthop group."
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INDEX { aristaNexthopGroupId }
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::= { aristaNexthopGroupTable 1 }
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AristaNexthopGroupEntry ::= SEQUENCE {
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aristaNexthopGroupId Unsigned32,
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aristaNexthopGroupName NexthopGroupName,
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aristaNexthopGroupType NexthopGroupType
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}
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aristaNexthopGroupId OBJECT-TYPE
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SYNTAX Unsigned32
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"Unique index identifying a nexthop group."
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::= { aristaNexthopGroupEntry 1 }
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aristaNexthopGroupName OBJECT-TYPE
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SYNTAX NexthopGroupName
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"Unique name identifying a nexthop group."
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::= { aristaNexthopGroupEntry 2 }
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aristaNexthopGroupType OBJECT-TYPE
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SYNTAX NexthopGroupType
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"The type of the nexthop group. The encapsulation information
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provided for each entry in the nexthop group corresponds to
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the type."
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::= { aristaNexthopGroupEntry 3 }
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-- Nexthop Group counter table
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aristaNexthopGroupCounterTable OBJECT-TYPE
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SYNTAX SEQUENCE OF AristaNexthopGroupCounterEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"Each nexthop group contains several entries - each
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entry specifies a particular nexthop through which a packet
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can be forwarded. There is packet and byte counter information
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associated with each such nexthop.
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This table represents the per nexthop counter information for
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every nexthop group."
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::= { aristaNexthopGroupMibObjects 2 }
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aristaNexthopGroupCounterEntry OBJECT-TYPE
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SYNTAX AristaNexthopGroupCounterEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"A conceptual row, containing counter information for every
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nexthop defined inside the nexthop group."
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INDEX { aristaNexthopGroupId,
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aristaNexthopGroupEntryIndex
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}
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::= { aristaNexthopGroupCounterTable 1 }
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AristaNexthopGroupCounterEntry ::= SEQUENCE {
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aristaNexthopGroupEntryIndex Unsigned32,
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aristaNexthopGroupCounterIndex Unsigned32,
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aristaNexthopGroupCounterPacketCount Counter64,
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aristaNexthopGroupCounterByteCount Counter64
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}
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aristaNexthopGroupEntryIndex OBJECT-TYPE
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SYNTAX Unsigned32
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"As described in the beginning of the MIB module each nexthop
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group can have multiple entries, one per 'destination' or
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'nexthop'. Each entry within a nexthop group has a number or
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index as configured by the user. This MIB object represents
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the entry index within the nexthop group."
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::= { aristaNexthopGroupCounterEntry 1 }
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aristaNexthopGroupCounterIndex OBJECT-TYPE
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SYNTAX Unsigned32
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"For every nexthop within a nexthop group, packet and byte
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counters are maintained by the device. Counters can be shared
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by multiple such nexthops and the counter index will be the
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same for all of those nexthops."
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::= { aristaNexthopGroupCounterEntry 2 }
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aristaNexthopGroupCounterPacketCount OBJECT-TYPE
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SYNTAX Counter64
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"The number of packets forwarded through the specific
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nexthop. Note that since counters are shared with multiple
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nexthops, the packet count is an aggregate of packets
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forwarded through all the relevant nexthops."
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::= { aristaNexthopGroupCounterEntry 3 }
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aristaNexthopGroupCounterByteCount OBJECT-TYPE
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SYNTAX Counter64
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"The byte count of packets forwarded through the specific
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nexthop. Note that since counters are shared with multiple
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nexthops, the byte count is an aggregate of packets
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forwarded through all the relevant nexthops."
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::= { aristaNexthopGroupCounterEntry 4 }
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-- Conformance and Compliance
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aristaNexthopGroupMibCompliances OBJECT IDENTIFIER
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::= { aristaNexthopGroupMibConformance 1 }
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aristaNexthopGroupMibGroups OBJECT IDENTIFIER
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::= { aristaNexthopGroupMibConformance 2 }
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aristaNexthopGroupMibCompliance MODULE-COMPLIANCE
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STATUS current
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DESCRIPTION
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"The compliance statement for Arista switches that implement
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the ARISTA-NEXTHOP-GROUP-MIB."
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MODULE -- this module
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MANDATORY-GROUPS {
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aristaNexthopGroupGroup,
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aristaNexthopGroupCounterGroup
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}
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::= { aristaNexthopGroupMibCompliances 1 }
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aristaNexthopGroupGroup OBJECT-GROUP
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OBJECTS {
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aristaNexthopGroupName,
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aristaNexthopGroupType
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}
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STATUS current
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DESCRIPTION
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"The collection of objects that provide nexthop group
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information in the system."
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::= { aristaNexthopGroupMibGroups 1 }
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aristaNexthopGroupCounterGroup OBJECT-GROUP
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OBJECTS {
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aristaNexthopGroupCounterIndex,
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aristaNexthopGroupCounterPacketCount,
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aristaNexthopGroupCounterByteCount
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}
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STATUS current
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DESCRIPTION
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"The collection of objects that provide counter information
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for every nexthop in the nexthop group."
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::= { aristaNexthopGroupMibGroups 2 }
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END
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