Junos
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Junos

MX how to change GRE IP MTU &IP TCP adjust-mss?

‎02-08-2018 07:03 AM

how to set in junper mx 480

show interfaces gr-4/0/0
unit 0 {
tunnel {
source 210.56.48.2;
destination 210.5.0.1;
}
family inet {
address 10.4.4.1/30;
}
}

 

----------------------------------------

Cisco GRE tunnel port setting

interface Tunnel1100

 ip address 10.4.4.2 255.255.255.252

 ip mtu 1460

 ip tcp adjust-mss 1420

 tunnel source 210.5.0.1

 tunnel destination 210.56.48.2

4 REPLIES 4
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Junos

Re: MX how to change GRE IP MTU &IP TCP adjust-mss?

‎02-08-2018 07:45 AM

Hi ,

 

Did you tried below option?

 

TEST# show interfaces gr-4/0/0
unit 0 {
    family inet {
        mtu 1400;
        tcp-mss 600;
    }
}

 

Regards,

Rahul

Highlighted
Junos

Re: MX how to change GRE IP MTU &IP TCP adjust-mss?

‎02-09-2018 11:15 PM

the forllowing conf. can't work , in the server also need to change MTU 

 

unit 1 {
description "GRE";
tunnel {
source 112.213.***.***;
destination 5.254.**.**;
}
family inet {
mtu 1460;
tcp-mss 1420;
address 192.168.56.2/30;
}
}

Highlighted
Junos

Re: MX how to change GRE IP MTU &IP TCP adjust-mss?

‎02-09-2018 11:45 PM

Hi Kenchan,

 

Thread was open for the commands. Can you confirm the issue?

 

You can also read the following if issue is related to fragmentation.

 

https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/allow-fra...

https://kb.juniper.net/InfoCenter/index?page=content&id=KB12393

 

Regards,
Rahul N

Highlighted
Junos

Re: MX how to change GRE IP MTU &IP TCP adjust-mss?

‎02-10-2018 01:29 AM

Now change the conf.  but don't work

 

show interfaces gr-4/0/0 unit 1
clear-dont-fragment-bit;
tunnel {
source 112.213.**.**;
destination 5.254.**.**;
allow-fragmentation;
}
family inet {
mtu 9192;
address 192.168.56.2/30;
}

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