Extremely long time to establish network link with Nexus N9K-C9372-PX-E
This switch is completely default, no configuration has been done other than resetting it to default configuration, and going through the normal naming of the switch and time etc.
The problem I'm seeing is that it takes 30-45 seconds for clients to get fully linked/connected. So for example, if we restart one of our Ubuntu clients, the Ubuntu machine will get to the login screen and then it takes another good 30-40 seconds before we will get the notification saying "Connection established".
Comparing this to our other switches that generally have the connection ready within 3-5 seconds after hitting the login screen. Is there something specific to the switch that I can change to reduce the time it takes to establish a connection?
cisco 10gbase
edited 9 hours ago
Ron Trunk
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
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Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
This switch is completely default, no configuration has been done other than resetting it to default configuration, and going through the normal naming of the switch and time etc.
The problem I'm seeing is that it takes 30-45 seconds for clients to get fully linked/connected. So for example, if we restart one of our Ubuntu clients, the Ubuntu machine will get to the login screen and then it takes another good 30-40 seconds before we will get the notification saying "Connection established".
Comparing this to our other switches that generally have the connection ready within 3-5 seconds after hitting the login screen. Is there something specific to the switch that I can change to reduce the time it takes to establish a connection?
cisco 10gbase
edited 9 hours ago
Ron Trunk
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago
add a comment |
This switch is completely default, no configuration has been done other than resetting it to default configuration, and going through the normal naming of the switch and time etc.
The problem I'm seeing is that it takes 30-45 seconds for clients to get fully linked/connected. So for example, if we restart one of our Ubuntu clients, the Ubuntu machine will get to the login screen and then it takes another good 30-40 seconds before we will get the notification saying "Connection established".
Comparing this to our other switches that generally have the connection ready within 3-5 seconds after hitting the login screen. Is there something specific to the switch that I can change to reduce the time it takes to establish a connection?
cisco 10gbase
edited 9 hours ago
Ron Trunk
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
This switch is completely default, no configuration has been done other than resetting it to default configuration, and going through the normal naming of the switch and time etc.
The problem I'm seeing is that it takes 30-45 seconds for clients to get fully linked/connected. So for example, if we restart one of our Ubuntu clients, the Ubuntu machine will get to the login screen and then it takes another good 30-40 seconds before we will get the notification saying "Connection established".
Comparing this to our other switches that generally have the connection ready within 3-5 seconds after hitting the login screen. Is there something specific to the switch that I can change to reduce the time it takes to establish a connection?
cisco 10gbase
cisco 10gbase
edited 9 hours ago
Ron Trunk
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 9 hours ago
Ron Trunk
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 9 hours ago
Ron Trunk
35.2k33372
edited 9 hours ago
Ron Trunk
35.2k33372
edited 9 hours ago
Ron Trunk
35.2k33372
35.2k33372
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
asked 9 hours ago
Kevin VaskoKevin Vasko
1061
1061
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Kevin Vasko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago
add a comment |
Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago
Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago
add a comment |
1 Answer
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If you have a switch with a default configuration, spanning tree will block ports when they come up until the forwarding timer expires.
You can configure portfast on ports that have end hosts on them to allow spanning-tree to put the ports immediately into forwarding mode.
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
add a comment |
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1 Answer
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1 Answer
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votes
If you have a switch with a default configuration, spanning tree will block ports when they come up until the forwarding timer expires.
You can configure portfast on ports that have end hosts on them to allow spanning-tree to put the ports immediately into forwarding mode.
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
add a comment |
If you have a switch with a default configuration, spanning tree will block ports when they come up until the forwarding timer expires.
You can configure portfast on ports that have end hosts on them to allow spanning-tree to put the ports immediately into forwarding mode.
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
add a comment |
If you have a switch with a default configuration, spanning tree will block ports when they come up until the forwarding timer expires.
You can configure portfast on ports that have end hosts on them to allow spanning-tree to put the ports immediately into forwarding mode.
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
If you have a switch with a default configuration, spanning tree will block ports when they come up until the forwarding timer expires.
You can configure portfast on ports that have end hosts on them to allow spanning-tree to put the ports immediately into forwarding mode.
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
answered 9 hours ago
Ron TrunkRon Trunk
35.2k33372
35.2k33372
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
add a comment |
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
A true evergreen in networking: portfast trouble. Here probably in its NX-OS guise as "spanning tree port type edge" if the port is in access mode (single VLAN untagged), respevtively as "spanning tree port type edge trunk" if the port is 802.1q with tagging towards the host. You wouldn't believe how many networks run without it, esepecially the without the latter variety...
– Marc 'netztier' Luethi
6 hours ago
add a comment |
Kevin Vasko is a new contributor. Be nice, and check out our Code of Conduct.
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Kevin Vasko is a new contributor. Be nice, and check out our Code of Conduct.
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Not enough information. Could it be spanning tree that causing your issue?
– Ron Trunk
9 hours ago
Logging in is host-specific which is off-topic here. You need to add details on when the link LED comes on (physical layer) and when data transfer starts (data link layer, check switch port status).
– Zac67
9 hours ago
@RonTrunk As in configuring the switch for spanning tree? Or are you asking if I have loops in the network? If it is the latter, it does not have loops in the network. This is a diagram of the network. imgur.com/HpBrAnU
– Kevin Vasko
9 hours ago
@Zac67 I'm not talking about logging in. I'm talking about how long it takes between when the connection is marked active and usable, I was using the login scenario as an example. In Ubuntu I can unplug the cable going to the 10Gb switch, plug it back in, and it takes 30-45 seconds before the connection is up and functioning (e.g. the little network connection wheel keeps spinning). If I plug the system up to one of our 1Gb switches it takes about 10 seconds.
– Kevin Vasko
9 hours ago
The "little network connection wheel" is a host feature. Check out the switch LED/status instead.
– Zac67
9 hours ago