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https://community.cisco.com/t5/switching/interface-fastethernet0-0-does-not-support-user-settable-mtu/td-p/1628063
Dears good morning! I have try issue the command mtu 1520, but It not accept how can you see below: router.rjo(config-if)#mtu 1520 % Interface FastEthernet0/0 does not support user settable mtu. Follow some informations: show diag Slot 0: Dual
https://evilttl.com/wiki/mtu-on-cisco-routers
% Interface FastEthernet0 / 0 does not support user settable mtu. The same refers to switch interface cards. To check L3 MTU on an interface issue sh ip int {if-number}. To check L2 MTU issue sh int {if-number} command. Logically speaking, L3 MTU setting can’t be greater than L2 MTU setting. These numbers don’t take headers and trailers ...
https://learningnetwork.cisco.com/thread/70875
May 20, 2014 · Can you please let me know the diff b/w mtu and ip mtu? And even if i'm trying to give the mtu value less than 1500, it is not accepting. R2(config-if)#mtu 1000 % Interface FastEthernet0/0 does not support user settable mtu. And i tried to setup ip mtu 1000, but i didn't see it changed here: I think i should know the diff. R2(config-if)#ip mtu 1000
https://quickview.cloudapps.cisco.com/quickview/bug/CSCuz58508
Nov 27, 2019 · Symptom: Configuring MTU size for interfaces results in a message to console: % Interface GigabitEthernet1 does not support user settable MTU. Conditions: CSR1000v running Denali-16.3.1 and attempting to configure interface MTU size for interfaces that rely on polled mode drivers. Determining if an interface uses a polled mode driver is done by using the following show command: …
https://community.cisco.com/t5/mpls/mtu-problems-with-mpls/td-p/322361
I have discovered that one of my routers, a 7206VXR with a PA-FE-FX "does not support user settable mtu". This seems to be causing a problem with some customers with firewalls (Path MTU Discovery isn't working on them...). I have turned up the MTU to 1526 on all interfaces and turned the MPLS MTU s...
https://ieoc.com/discussion/6244/mtu-change
Does anyone know why I can't change the mtu interface with this command ? Router(config-if)#mtu 9216 % Interface FastEthernet0/0 does not support user settable mtu. Router(config-if)# Second one:-----what is the difference between these 2 commandes: Router(config-if)#mtu bytes . and. Router(config-if)# ip mtu bytes. Thank you very much for your ...
https://www.experts-exchange.com/questions/27047799/How-can-I-change-MTU-on-FastEthernet-port-Cisco-7206.html
How can I change MTU on FastEthernet port (Cisco 7206) ... % Interface FastEthernet0/0 does not support user settable mtu. Therefore the MTU defined under the show commands is 1500 which is the MTU for the Ethernet Payload, not including the Ethernet Headers. I have taken the following from an IETF internet draft supporting the case for larger ...
https://community.cisco.com/t5/routing/mtu-size-on-tunnel-interface/td-p/857347
Solved: hi netpros, we are running a few GRE tunnels - so far without any problems. now we have the first issue with large packets getting dropped. we changed the mtu size on the tunnel interface: interface Tunnel41 ip address 192.168.a.b
https://www.reddit.com/r/networking/comments/5etjaa/cisco_asr1002_subinterface_mtu_issue/
Cisco ASR1002 SubInterface MTU Issue. Hey all, I'm trying to set the mtu on a l2transport vc but I'm getting the following exception: ciscoXXX(config-subif)#mtu 1500 % Interface GigabitEthernet0/1/9.200 does not support user settable mtu. EDIT: If anyone is wondering how to do this, you must set the mtu under the xconnect ...
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