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Welcome to Cisco Support Community. We would love to have your feedback.

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SNMP & Etherchannel

With the following command, any interface that goes up or down will have a trap sent:

snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart

However, if you have 4 interfaces in one Etherchannel, is the linkup or linkdown trap sent for the specific interface if it goes down? Please confirm.

Thanks for your help in advance.

1 ACCEPTED SOLUTION

Accepted Solutions

Re: SNMP & Etherchannel

Yes, any ports that form the etherchannel should go up/down will trigger an SNMP trap to be sent.

See below.

SW1-3550#

1w0d: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to up

1w0d: SNMP: Queuing packet to 1.1.1.1

1w0d: SNMP: V1 Trap, ent products.485, addr 172.30.1.21, gentrap 3, spectrap 0

ifEntry.1.10 = 10

ifEntry.2.10 = FastEthernet0/10

ifEntry.3.10 = 6

lifEntry.20.10 = up

1w0d: SNMP: Packet sent via UDP to 1.1.1.1

1w0d: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/10, changed

state to up

SW1-3550#show etherchannel 1 ?

detail Detail information

port Port information

port-channel Port-channel information

protocol protocol enabled

summary One-line summary per channel-group

SW1-3550#show etherchannel 1 summ

Flags: D - down P - in port-channel

I - stand-alone s - suspended

H - Hot-standby (LACP only)

R - Layer3 S - Layer2

u - unsuitable for bundling

U - in use f - failed to allocate aggregator

d - default port

Number of channel-groups in use: 1

Number of aggregators: 1

Group Port-channel Protocol Ports

------+-------------+-----------+-----------------------------------------------

1 Po1(SU) - Fa0/10(P) Fa0/11(P)

Pls. rate the post if it helped.

HTH,

Sundar

2 REPLIES

Re: SNMP & Etherchannel

Yes, any ports that form the etherchannel should go up/down will trigger an SNMP trap to be sent.

See below.

SW1-3550#

1w0d: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to up

1w0d: SNMP: Queuing packet to 1.1.1.1

1w0d: SNMP: V1 Trap, ent products.485, addr 172.30.1.21, gentrap 3, spectrap 0

ifEntry.1.10 = 10

ifEntry.2.10 = FastEthernet0/10

ifEntry.3.10 = 6

lifEntry.20.10 = up

1w0d: SNMP: Packet sent via UDP to 1.1.1.1

1w0d: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/10, changed

state to up

SW1-3550#show etherchannel 1 ?

detail Detail information

port Port information

port-channel Port-channel information

protocol protocol enabled

summary One-line summary per channel-group

SW1-3550#show etherchannel 1 summ

Flags: D - down P - in port-channel

I - stand-alone s - suspended

H - Hot-standby (LACP only)

R - Layer3 S - Layer2

u - unsuitable for bundling

U - in use f - failed to allocate aggregator

d - default port

Number of channel-groups in use: 1

Number of aggregators: 1

Group Port-channel Protocol Ports

------+-------------+-----------+-----------------------------------------------

1 Po1(SU) - Fa0/10(P) Fa0/11(P)

Pls. rate the post if it helped.

HTH,

Sundar

New Member

SNMP & Etherchannel

I have found the SNMP to monitor if a port in a EtherChannel fails.

dot3adAggAggregateOrIndividual

http://ipmsupport.solarwinds.com/mibs/IEEE8023-LAG-MIB/item.aspx?id=dot3adAggAggregateOrIndividual

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