why MTU change from 1500 to 9000
1
in /var/log/message file we found something interesting
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
we can see the interface card - en3j87
change from 1500 MTU to 9000
is it normal ?
Mar 9 07:07:33 linux54 dbus-daemon: dbus[1153]: [system] Successfully activated service 'org.freedesktop.problems'
Mar 9 07:08:30 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:30 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:31 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: removed PHC on en3j87
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:32 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:32 linux54 kernel: team0: Port device en3j87 added
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:33 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:33 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
linux networking rhel network-interface dmesg
asked 3 hours ago
yaelyael
2,72122574
add a comment |
1
in /var/log/message file we found something interesting
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
we can see the interface card - en3j87
change from 1500 MTU to 9000
is it normal ?
Mar 9 07:07:33 linux54 dbus-daemon: dbus[1153]: [system] Successfully activated service 'org.freedesktop.problems'
Mar 9 07:08:30 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:30 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:31 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: removed PHC on en3j87
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:32 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:32 linux54 kernel: team0: Port device en3j87 added
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:33 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:33 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
linux networking rhel network-interface dmesg
asked 3 hours ago
yaelyael
2,72122574
add a comment |
1
1
1
1
in /var/log/message file we found something interesting
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
we can see the interface card - en3j87
change from 1500 MTU to 9000
is it normal ?
Mar 9 07:07:33 linux54 dbus-daemon: dbus[1153]: [system] Successfully activated service 'org.freedesktop.problems'
Mar 9 07:08:30 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:30 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:31 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: removed PHC on en3j87
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:32 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:32 linux54 kernel: team0: Port device en3j87 added
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:33 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:33 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
linux networking rhel network-interface dmesg
asked 3 hours ago
yaelyael
2,72122574
in /var/log/message file we found something interesting
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
we can see the interface card - en3j87
change from 1500 MTU to 9000
is it normal ?
Mar 9 07:07:33 linux54 dbus-daemon: dbus[1153]: [system] Successfully activated service 'org.freedesktop.problems'
Mar 9 07:08:30 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:30 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:31 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:31 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: removed PHC on en3j87
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: changing MTU from 1500 to 9000
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1: registered PHC device on en3j87
Mar 9 07:08:32 linux54 kernel: IPv6: ADDRCONF(NETDEV_UP): en3j87: link is not ready
Mar 9 07:08:32 linux54 kernel: team0: Port device en3j87 added
Mar 9 07:08:32 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: detected SFP+: 5
Mar 9 07:08:33 linux54 kernel: ixgbe 0000:0b:00.1 en3j87: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 9 07:08:33 linux54 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): en3j87: link becomes ready
linux networking rhel network-interface dmesg
linux networking rhel network-interface dmesg
asked 3 hours ago
yaelyael
2,72122574
asked 3 hours ago
yaelyael
2,72122574
asked 3 hours ago
yaelyael
2,72122574
asked 3 hours ago
yaelyael
2,72122574
asked 3 hours ago
yaelyael
2,72122574
2,72122574
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
2
This means that your interface has been configured to use jumbo frames. If the connection is working, then it’s nothing to worry about, and you’ll get higher throughput as a result. (If it works, it means the network equipment the interface is connected to has also been configured for jumbo frames.)
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f507069%2fwhy-mtu-change-from-1500-to-9000%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
This means that your interface has been configured to use jumbo frames. If the connection is working, then it’s nothing to worry about, and you’ll get higher throughput as a result. (If it works, it means the network equipment the interface is connected to has also been configured for jumbo frames.)
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
add a comment |
2
This means that your interface has been configured to use jumbo frames. If the connection is working, then it’s nothing to worry about, and you’ll get higher throughput as a result. (If it works, it means the network equipment the interface is connected to has also been configured for jumbo frames.)
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
add a comment |
2
2
2
This means that your interface has been configured to use jumbo frames. If the connection is working, then it’s nothing to worry about, and you’ll get higher throughput as a result. (If it works, it means the network equipment the interface is connected to has also been configured for jumbo frames.)
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
This means that your interface has been configured to use jumbo frames. If the connection is working, then it’s nothing to worry about, and you’ll get higher throughput as a result. (If it works, it means the network equipment the interface is connected to has also been configured for jumbo frames.)
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
answered 3 hours ago
Stephen KittStephen Kitt
176k24401479
176k24401479
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
add a comment |
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
The key point here is that it was configured, it does not change alone. Now if people changes randomly MTUs, that is another problem.
– Rui F Ribeiro
16 mins ago
add a comment |
draft saved
draft discarded
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f507069%2fwhy-mtu-change-from-1500-to-9000%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
