unable to ping dlink switch
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7/25/2019 Unable to Ping Dlink Switch
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Unable to ping/telnet to management interface of switch
Answered Question
Charlie Jones3 years ago
Good morning,
A couple of weeks ago we upgraded about 50 access layer switches at a branch office All of
them are !"#35$0#%&'" (he switches were upgraded to )*" +%%55-".$ *nce the update
was completed, all of the switches were reloaded to complete the upgrade *ne of the 50
switches showed up in our monitoring application as being down after the reload !e had
someone at the office plug in a laptop so we could console into it and the switch
configuration looked correct (he switch is working normally 'C/s and phones working
normally-, but we cannot ping or telnet into this one switch elow is a breakdown of this
site in terms of topology1
Core # % $502
istribution # % 3450g
Access # 35$0 switches
ayer two looks to be running normally in that 6tp is being updated and cdp is working aswell (he trunk interfaces from this switch to the distribution layer switch are up each gig
interface on this 35$0 goes to one of the 3405g switches-
*n this switch, ) ha6e erased the config and deleted the 6landat ) reapplied the config and
re#enabled 7(' and this switch is still not accessible Any suggestions8
) should mention that the management interface is 6lan + ) ha6e tried gi6ing this
management interface a different )' address in case there was a duplicate )' and that does not
work *ther switches that were upgraded and connect up into this 3450g stack work fine
) ha6e this problem too0 6otes
Correct Answerby stephenstackabout 2 years 5 monthsago
Charlie
thats great news, but unfortunate in a way that it was not found eariler
9ot my te:t but the; which will pre6ent the double#encapsulation
attacks (his command globally works on all switchport trunks on that entire .thernet
switch (his command will make sure that the nati6e 7A9 is always tagged on e6ery trunk
on the switch (his is a great best practice and takes care of the issue with a single
command This command should be entered in every switch in the campus? my bold-
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7/25/2019 Unable to Ping Dlink Switch
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(his caused e6ery untagged ingress frame is dropped, so the traffic replies were not reaching
the control plane of the switch
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stephenstack3 years ago
Ei
Can the switch ping out to the network8 is the ip default#gateway set8
Degards
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Charlie Jones3 years ago
E),
(he switch cannot ping out (he default gateway is set as well
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stephenstack3 years ago
can you pro6ide partial rele6ant configuration8 Also, try a debug ip icmp when pinging it to
see if the icmp packets are reaching the switch
Degards
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Charlie Jones3 years ago
) enabled )CF' debugging ) pinged the switch from another switch in this ) and nothing
shows in the log of the failed switch
)nterface 7lan+
ip address +0+20++% %55%55%550
ip default#gateway +0+20+
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glengrant3 years ago
Fake sure ip routing is not turned on the 35$0, otherwise the default gateway statement is
no good )f routing is turned on then you would need a default static route pointing to the
3450 gateway address for that 6lan and get rid of the default gateway statement )s this
switch trunked or Hust an access port 8 Check trunk setup , nati6e 6lan for trunk etc Iou
should be able to get to the switch from 3450 e6en if the gateway is no good because it is
directly attached to the 3450 which is where i assume the 6lan + subnet originates "ource
ping the switch from the 6lan + "7)
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Dichard urts3 years ago
'erhaps the output of show ip interface brief or of show interface status might shed some
light on the issue8
) also wonder what would be in the output of show arp from the problem switch
E(E
Dick
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Charlie Jones3 years ago
Eere is the information you re=uested
)nterface )'#Address *8 Fethod "tatus 'rotocol
7lan+ +0+20++% I." manual up up
ast.thernet0+ unassigned I." unset down down
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ast.thernet0% unassigned I." unset up up
ast.thernet03 unassigned I." unset up up
ast.thernet0& unassigned I." unset down down
ast.thernet05 unassigned I." unset down down
ast.thernet0$ unassigned I." unset up up
ast.thernet04 unassigned I." unset up up
ast.thernet0K unassigned I." unset up up
ast.thernet02 unassigned I." unset up up
ast.thernet0+0 unassigned I." unset up up
ast.thernet0++ unassigned I." unset up up
ast.thernet0+% unassigned I." unset up up
ast.thernet0+3 unassigned I." unset up up
ast.thernet0+& unassigned I." unset down down
ast.thernet0+5 unassigned I." unset up up
ast.thernet0+$ unassigned I." unset down down
ast.thernet0+4 unassigned I." unset up up
ast.thernet0+K unassigned I." unset up up
ast.thernet0+2 unassigned I." unset down down
ast.thernet0%0 unassigned I." unset up up
ast.thernet0%+ unassigned I." unset up up
ast.thernet0%% unassigned I." unset up up
ast.thernet0%3 unassigned I." unset down down
ast.thernet0%& unassigned I." unset up up
Gigabit.thernet0+ unassigned I." unset up up
Gigabit.thernet0% unassigned I." unset up up
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sh arp
'rotocol Address Age min- Eardware Addr (ype )nterface
)nternet +0+20+ 0 )ncomplete AD'A
)nternet +0+20++% # 00+b0c4c+3&0 AD'A 7lan+
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Dichard urts3 years ago
(hanks for the information )t is somewhat helpful, but not enough to diagnose the full
problem )t does confirm the )' address of the 7A9 interface seems to be correct
(he fact that the arp table shows incomplete for the mac address of the gateway +0+20+indicates that arp is failing to resol6e the )' address to a mac address (his typically indicates
some layer % problem Can you post the output of show interface status, and indentify for us
the ports on the switch that connect to the upstream switch8
E(E
Dick
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stephenstack3 years ago
Iou may also want to check what 6lans are allowed an the upstream trunk links with a show
int trunk o this on both sides of the trunks from the affected switch and ensure 6lan+ is
allowed
Degards
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Charlie Jones3 years ago
) think this will hit the last two =uestions ) compared this output to another switch that we
upgraded, and the information matches the functional switch
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(runks on problematic switch
Gi0+ connected trunk full +000 +0+00+000ase(L "'
Gi0% connected trunk full +000 +0+00+000ase(L "'
(runk Mplink "witch +Gi+0+ connected trunk full +000 +0+00+000ase(L
(runk Mplink "witch %
Gi+0% connected trunk full +000 +0+00+000ase(L
"how int trunk from problematic switch
'ort Fode .ncapsulation "tatus 9ati6e 6lan
Gi0+ on K0%+= trunking +
Gi0% on K0%+= trunking +
'ort 7lans allowed on trunk
Gi0+ +#&02&
Gi0% +#&02&
'ort 7lans allowed and acti6e in management domain
Gi0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
'ort 7lans in spanning tree forwarding state and not pruned
Gi0+ +,%5,%4,%2,3+,+%5,+%4,+%2,+3+,503,K5+,K53,235,244,2K5,222,+00+
Gi0% %$,%K,30,3%,+%$,+%K,+30,+3%,K30,K50,2K&,220,22K
"how int trunk from "witch +
'ort Fode .ncapsulation "tatus 9ati6e 6lan
Gi+0+ on K0%+= trunking +
Gi+0% on K0%+= trunking +
Gi+03 on K0%+= trunking +Gi+0& on K0%+= trunking +
Gi+05 on K0%+= trunking +
Gi+0$ on K0%+= trunking +
Gi+04 on K0%+= trunking +
Gi+0%5 on K0%+= trunking +
'ort 7lans allowed on trunk
Gi+0+ +#&02&
Gi+0% +#&02&
Gi+03 +#&02&
Gi+0& +#&02&Gi+05 +#&02&
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Gi+0$ +#&02&
Gi+04 +#&02&
Gi+0%5 +#&02&
'ort 7lans allowed and acti6e in management domain
Gi+0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+
Gi+0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+03 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0& +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+05 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0$ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+Gi+04 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0%5 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
'ort 7lans in spanning tree forwarding state and not pruned
Gi+0+ +,K5+,K53
Gi+0% +
Gi+03 +,K5+,K53
Gi+0& +,K5+,K53
Gi+05 +,K5+,K53
Gi+0$ +,K5+,K53
Gi+04 +,K5+,K53
Gi+0%5 +,%5#3%,+%5#+3%,503,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+
"how int trunk from "witch %
'ort Fode .ncapsulation "tatus 9ati6e 6lan
Gi+0+ on K0%+= trunking +
Gi+0% on K0%+= trunking +Gi+03 on K0%+= trunking +
Gi+0& on K0%+= trunking +
Gi+05 on K0%+= trunking +
Gi+0$ on K0%+= trunking +
Gi+04 on K0%+= trunking +
Gi+0%5 on K0%+= trunking +
'ort 7lans allowed on trunk
Gi+0+ +#&02&
Gi+0% +#&02&
Gi+03 +#&02&Gi+0& +#&02&
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Gi+05 +#&02&
Gi+0$ +#&02&
Gi+04 +#&02&
Gi+0%5 +#&02&
'ort 7lans allowed and acti6e in management domainGi+0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+03 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0& +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+05 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0$ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+
Gi+04 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
Gi+0%5 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#
222,+00+
'ort 7lans in spanning tree forwarding state and not pruned
Gi+0+ +,%$,+%$,K50
Gi+0% +,%$,+%$
Gi+03 +,%$,+%$,K50
Gi+0& +,%$,+%$,K50
Gi+05 +,%$,+%$,K50
Gi+0$ +,%$,+%$,K50
Gi+04 +,%$,+%$,K50
Gi+0%5 +,%5#3%,+%5#+3%,503,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+
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Dichard urts3 years ago
(hanks for the additional information "o far it all looks reasonable and looks like it should
be working-
'erhaps you could post the output of show cdp neighbor from the problem switch and also
from both of the upstream switches
!here is the address +0+20+ located8 on which de6ice-
E(E
Dick
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stephenstack3 years ago
All looks ok
9ot sure if this was done or can be done ut try to remo6e 6lan + completely .lse default
it/s config shut it down and start configuring it from scratch # bring it up only when
configured Ea6e had similar issues with s6i/s in the past
Degards
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Charlie Jones3 years ago
elow is the cdp information you re=uested +0+20+ resides on the core switches 6ia hrsp
'roblematic "witch
CE)#35$0#%$0%Nsh cdp neighbors gi0+
Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge
" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone,
# Demote, C # C7(A, F # (wo#port Fac Delay
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#3450G#%$0+ Gig 0+ +%$ " ) !"#C3450G Gig +0%
CE)#35$0#%$0%Nsh cdp neighbors gi0%
Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge
" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone,
# Demote, C # C7(A, F # (wo#port Fac Delay
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#3450G#%$0% Gig 0% +3+ " ) !"#C3450G Gig +0%
(runk "witch +
Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge " # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1hfPMKRZ3XpMvucCXYzlUssV_pw1dcmq__tYAKMuR-8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=NMV7hRybtjNwSCUKM47-Ym-sJQvU41OsquAqd-8UXL0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=-1tsR071uTgVNRkytO1hT3ZBLyuCa1UzfiJ6TTgXEiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=MgrkmqTMsFCHYR6hFteB5LCCn24zXLUjjdXTvf09Bmghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xub9oaj6yN0KjcFDnF8YKCabrjdR8FzaIEx7Xal_6zAhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1hfPMKRZ3XpMvucCXYzlUssV_pw1dcmq__tYAKMuR-8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=NMV7hRybtjNwSCUKM47-Ym-sJQvU41OsquAqd-8UXL0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=-1tsR071uTgVNRkytO1hT3ZBLyuCa1UzfiJ6TTgXEiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=MgrkmqTMsFCHYR6hFteB5LCCn24zXLUjjdXTvf09Bmghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xub9oaj6yN0KjcFDnF8YKCabrjdR8FzaIEx7Xal_6zAhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/users/foleyacct -
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e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+
(runk "witch %
CE)#3450G#%$0%Nsh cdp neighbors gi+0%
Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge
" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#35$0#%$0% Gig +0% +$5 " ) !"#C35$0#%Gig 0%
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Dichard urts3 years ago
'erhaps we ha6e a clue about the problem ) see that from the problem switch we belie6e that
upstream switch + is using interface gi+0%
CE)#3450G#%$0+ Gig 0+ +%$ " ) !"#C3450G Gig +0%
but on the upstream switch+ it think is it using interface Gig+0+
CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+
) am not sure what causes this mismatch ut ) suspect that this is related to the problem
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Charlie Jones3 years ago
"orry, that was my fault Eere is the correct informaiton on the uplink switches
"witch +
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#35$0#%$0% Gig +0% +$% " ) !"#C35$0#%Gig 0+
"witch %
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#35$0#%$0% Gig +0% +&4 " ) !"#C35$0#%Gig 0%
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Dichard urts3 years ago
*r did you show the incorrect cdp neighbor on the upstream switch +8 "ince the neighbor it
is reporting seems to not be the problem switch8
(runk "witch +
Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge
" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone
e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )
CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+
l am now noticing that it is 35$0#%$0+ and not 35$0#%$0%
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Dichard urts3 years ago
* et us take a slightly different approach !e know that part of the difficulty is that the
problematic switch is not able to arp for the +0+20+ address it shows incomplete in the arp
table- Iou ha6e told us that this address is E"D' on the upstream switches "o can the
problematic switch arp and ping- to the physical interface address not the shared address-
on either or both of the upstream switchesO8
Also ) would be curious to know if the upstream switches can arp for the management
address of the problematic switch8
E(E
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Charlie Jones3 years ago
) went to the upstream switches and attempted to ping the management )' of the problematic
switch, and that times out !hen ) checked the arp on the upstream switches, ) see the
following1
)nternet +0+20++% 0 00+b0c4c+3&0 AD'A 7lan+
)s that what you were looking to see8
"ee Fore
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Dichard urts3 years ago
Ies this is what ) was looking for )t demonstrates that there is successful communication
between the upstream switch and the problematic switch "o the =uestions in this thread
about where interfaces configured correctly, were the trunks set up correctly, were the right
7A9s allowed on the trunk, etc are all answered now !e ha6e successful communication
(he ne:t test ) would like to do is to see if the problematic switch can arp and ping- to the
interface address of the upstream switch
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Charlie Jones3 years ago
)m unable to ping the upstream switches elow is the arp table from the problematic switch
)nternet +0+20+02 0 )ncomplete AD'A
)nternet +0+20++0 0 )ncomplete AD'A
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Dichard urts3 years ago
) am a bit surprised at this ut ) belie6e that it is =uite helpful "omething is pre6enting the
switch from arp to what should be locally connected addresses !ould you turn on debug arp,
try the ping, and post the output of the debug8
)t might also be helpful to turn on debug arp on the upstream switch, try ping from the
problematic switch, and post output to see if the arp gets to the upstream switch
)t would seem that either the problematic switch is not sending the arp re=uest or that the
upstream is not sending the reply (hese tests should show which it is
E(E
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Charlie Jones3 years ago
Eere is the arp debug from the problematic switch to the G
CE)#35$0#%$0%Nping +0+20+
(ype escape se=uence to abort
"ending 5, +00#byte )CF' .chos to +0+20+, timeout is % seconds1
Jan %3 0K13+10+$$4 C"(1 )' AD'1 creating incomplete entry for )' address1 +0+20+
interface 7lan+
Jan %3 0K13+10+$$4 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+10+$$4 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +050++4 000000000000 7lan+
Jan %3 0K13+10%$43 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+103$4% C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +050++4 000000000000 7lan+
Jan %3 0K13+103$K0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+10&$K4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+10&$K4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+105$23 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+10$400 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+104$43 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +050++4 000000000000 7lan+Jan %3 0K13+104404 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
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dst +0+20+ 000000000000 7lan+
Jan %3 0K13+104404 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+10K4+3 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+1024%0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+1+04%4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+Jan %3 0K13+1+04%4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+1++433 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+1+%4&0 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+1+34&$ C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
Jan %3 0K13+1+34&$ C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+1+&453 C"(1 )' AD' throttled out the AD' De=uest for +0+20+
Jan %3 0K13+1+5$4$ C"(1 )' AD'1 creating incomplete entry for )' address1 +050++4
interface 7lan+
Jan %3 0K13+1+5$4$ C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0, dst +050++4 000000000000 7lan+
Jan %3 0K13+1+54$0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
dst +0+20+ 000000000000 7lan+
"uccess rate is 0 percent 05-
!hen ) tried to ping the problematic switch from an upstream switch, ) did not get any debug
messages
!hen ) pinged the G from the problematic switch and had debugging enabled on an
upstream switch, ) was seeing some log entries in the upstream switch
Jan %3 0K13$1%$+02 C"(1 )' AD'1 rc6d re= src +0+20++% 00+b0c4c+3&0, dst +050++4
7lan+
Jan %3 0K13$1%$+23 C"(1 )' AD'1 rc6d re= src +0+20++% 00+b0c4c+3&0, dst +0+20+
7lan+
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stephenstack3 years ago
Charlie,
) know you/6e rebuilt the config on the switch (ake my earlier suggestion and remo6e the
"7) interface 6lan +- and re#add it if you can as it/s not working, i wont do any harm right
now
Degards
@@@@@@@@@@@@@@@@@@@@@@@@@@
http1wwwrConfigcom
A free, open source network de6ice configuration management tool, customiBable to your
needs
# Always 6ote on an answer if you found it helpful
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Charlie Jones3 years ago
) can/t remo6e it completely since it is 6lan + ) remo6ed the )' address, shutdown the port,
added the )' address, and enabled the port again and it is not working ) also tried gi6ing the
6lan interface a different )', and i get the same result
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stephenstack3 years ago
*dd, i can remo6e it on some lab kit i ha6e
A"!Nconf t
.nter configuration commands, one per line .nd with C9(P
A"!config-Nint 6lan +
A"!config#if-Nip add ++++ %55%55%550
A"!config#if-Nno shut
A"!Nsh ip int bri
)nterface )'#Address *8 Fethod "tatus 'rotocol
7lan+ ++++ I." manual up up
A"!Nconf t
.nter configuration commands, one per line .nd with C9(P
A"!config-Nno int 6lan +
A"!Nsh run int 6lan +
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5TwATliFcre30n_JFbR4vU7wLo0wJZo-uCi9gm34JFohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=BKM7_tlUsNO-wTxlY_ZidlX9w7-bMcL1Ry6iGum4ZA4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_Cv8IHcSOdOgZTugeJQthLieUPYtxmByDKnEMECP0fYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=J4wLNsoHjj3zOIgbd9_QDnjPDLQK44VOeTcajvzaDiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OJ3VRdGJuXFMchY4IXGKV1oIaxrJTiy-Cw7m90wR0y4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5TwATliFcre30n_JFbR4vU7wLo0wJZo-uCi9gm34JFohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=BKM7_tlUsNO-wTxlY_ZidlX9w7-bMcL1Ry6iGum4ZA4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_Cv8IHcSOdOgZTugeJQthLieUPYtxmByDKnEMECP0fYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=J4wLNsoHjj3zOIgbd9_QDnjPDLQK44VOeTcajvzaDiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OJ3VRdGJuXFMchY4IXGKV1oIaxrJTiy-Cw7m90wR0y4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/users/stephenstack -
7/25/2019 Unable to Ping Dlink Switch
25/39
R )n6alid input detected at // marker
A"!Nsh ip int bri
)nterface )'#Address *8 Fethod "tatus 'rotocol
@@@@@@@@@@@@@@@@@@@@@@@@@@
http1wwwrConfigcom
A free, open source network de6ice configuration management tool, customiBable to your
needs
# Always 6ote on an answer if you found it helpful
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paul dri6er3 years ago
Charile,
rom this problem switch upto the cores # where in that path are pings succesfull # what switch is able to ping
the cores8
res
'aul
"ee Fore
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http://www.rconfig.com/https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=9R7e58MPt-uwm097OqraCv_3mbDe7847WkorqlZV51Qhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=72wXfpQyqrZZRJPcwj8lqFqM8eWGYDvVEkV5dw81XUIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Drtexmrn8Louck7fy4fxIWa6W2te6ydyeNrr7Tg33vYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=12C1IfhsBQ2orO0hFYjhvigD6pQYI--VWiLSVhfEvw8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=rEc-PoWj08lIg_ML30FFhoM9nIUJs1kTQP0GnoOzfBshttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=urdc3LLQTgWJu7iIJhs0KbWpU6YPDPAkSZO_J3V9AEchttp://www.rconfig.com/https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=9R7e58MPt-uwm097OqraCv_3mbDe7847WkorqlZV51Qhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=72wXfpQyqrZZRJPcwj8lqFqM8eWGYDvVEkV5dw81XUIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Drtexmrn8Louck7fy4fxIWa6W2te6ydyeNrr7Tg33vYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=12C1IfhsBQ2orO0hFYjhvigD6pQYI--VWiLSVhfEvw8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=rEc-PoWj08lIg_ML30FFhoM9nIUJs1kTQP0GnoOzfBshttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=urdc3LLQTgWJu7iIJhs0KbWpU6YPDPAkSZO_J3V9AEc -
7/25/2019 Unable to Ping Dlink Switch
26/39
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Charlie Jones3 years ago
rom the problematic switch, ) can only ping its 7A9 interface, ) can/t ping anything
upstream from it rom the upstream switches, ) can ping the default gateway but not the )'
of the problematic switch
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paul dri6er3 years ago
*kay from the good switch directly attached to the problem switch, and the problem switch
can you post1
https://supportforums.cisco.com/discussion/11714716/unab
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