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Beginner

UDP port 10000 and IPv6 ports listening

Afternoon all,

I've several production Catalyst switches that are listening on the same IPv4 and IPv6 ports. The problem is I don't want the switches listening on the IPv6 ports.

OUTPUT FROM SWITCH:

switch#sh ip sock

Proto       Remote     Port     Local       Port In Out Stat TTY OutputIF

17       --listen--         192.168.1.1     123   0   0 1001   0

17(v6)   --listen--         --any--           123   0   0 20001   0

17       --listen--         192.168.1.1     1975   0   0   11   0

17     0.0.0.0             0 192.168.1.1     2228   0   0   211   0

17     0.0.0.0             0 192.168.1.1        67   0   0 2211   0

17     192.168.1.2   63706 192.168.1.1       161   0   0 1001   0

17       --listen--         192.168.1.1       162   0   0 1011   0

17       --listen--         192.168.1.1     52919   0   0 1011   0

17(v6)    --listen--         --any--           161   0   0 20001   0

17(v6)   --listen--         --any--           162   0   0 20011   0

17(v6)   --listen--         --any--         54464   0   0 20001   0

17     192.168.1.2     514 192.168.1.1     61483   0   0 400201   0

switch#

As far as I know, this IOS code DOES NOT support IPv6.

Code: c3560-ipbasek9-mz.122-58.SE2.bin

Hardware: WS-C3560G-24PS-S

switch#sh ipv6 route
% Specified IPv6 routing table does not exist
switch#sh ipv6 protocols

switch#

Does anyone have any idea how to shut down these listening ports?

I also have a few production switches listening on UDP/10000 and I cannot determine why this port is listening.

OUTPUT FROM SWITCH:

switch#sh ip sock
Proto    Remote      Port      Local       Port  In Out Stat TTY OutputIF
17   --listen--          192.168.1.1 10000   0   0   11   0
17 192.168.1.2   162 192.168.1.1     60310   0   0    0   0
17 0.0.0.0             0 192.168.1.1  2228   0   0  211   0
17 0.0.0.0             0 192.168.1.1    67   0   0 2211   0
17 192.168.1.2    63706 192.168.1.1    161   0   0 1001   0
17   --listen--          192.168.1.1   162   0   0 1011   0
17   --listen--          192.168.1.1 58064   0   0 1011   0
17   --listen--          --any--       161   0   0 20001   0
17   --listen--          --any--       162   0   0 20011   0
17   --listen--          --any--     60653   0   0 20001   0
17   --listen--          192.168.1.1   123   0   0    1   0
17 192.168.1.2   514 192.168.1.1 61686   0   0 400201   0
switch#

Code: c3750-ipbasek9-mz.122-55.SE6.bin
Hardware: WS-C3750G-12S-S

I've seen where UDP/10000 is Network Data Management Protocol and is related to Storage networks, but I've also seen where UDP/10000 is the default port for IPSEC data.

I don't believe UDP/10000 is related to either NDMP or IPSEC data, though I could be very wrong.

Any help is very appreciated.

Everyone's tags (6)
5 REPLIES 5
Beginner

UDP port 10000 and IPv6 ports listening

Can anyone confirm if Cisco Stack Discovery Protocol uses, by default, UDP/10,000? I believe SDP is the service behind this port, though I've not come across any documentation that covers this aspect of SDP.

Beginner

UDP port 10000 and IPv6 ports listening

Hi Khagler24,

Did you ever find an answer? I've got the same issue on an edge 3560-X switch

Thanks,

Rob

Beginner

UDP port 10000 and IPv6 ports listening

Sorry and by the same I mean the 3560-X edge switch is listening on UDP/10000 and I'd like to close this port down.

Thanks

Rob

Highlighted
Beginner

UDP port 10000 and IPv6 ports listening

Hi Rob,

Unfortunately no, I have not come across an answer for UDP/10000. I had suspected that it was Cisco's Stack Discovery Protocol until you mentioned having this same issue on a 3560x.

Guess I'll open a TAC case to find out what it is. I'll post here if/when I here something back from Cisco.

Thanks

Ken

Beginner

Hi Ken,

Hi Ken,

What was the resolution to UDP 10000?

Thanks,

'Ayo

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