Mailing List Archive

problem with ospf6 MTU VLAN interface
Dear list,

I have strange problem with ospf6d + VLAN interface + fedora 27.

in ospf6d config file(on disk) i have:
interface enp1s0f0.224
 ipv6 ospf6 cost 1
 ipv6 ospf6 network broadcast

BUT after rebooting serwer when i log in to management console:
sh run
interface enp1s0f0.224
 ipv6 ospf6 ifmtu 1504
 ipv6 ospf6 cost 1
 ipv6 ospf6 network broadcast

interface has MTU 1500 bytes:
sh interface enp1s0f0.224
Interface enp1s0f0.224 is up, line protocol is up
  Link ups:       1  last: Thu, 22 Feb 2018 16:34:20 +0100
  Link downs:     0  last: (never)
  vrf: 0
  index 4 metric 0 mtu 1500
  flags: <UP,BROADCAST,RUNNING,MULTICAST>
  Type: Unknown
  HWaddr: 00:1e:67:37:67:bc
  inet 213.135.44.139/28 broadcast 213.135.44.143
  inet6 fe80::21e:67ff:fe37:67bc/64
  inet6 2001:1a68:a:3000::139/64

WHY config automatically changing????

(tested quagga 1.2.4)

--
Bart?omiej Solarz-Nies?uchowski, Administrator WSISiZ
e-mail: Bartlomiej.Solarz-Niesluchowski@wit.edu.pl
tel. 223486547, fax 223486501
JID: solarz@jabber.wit.edu.pl
01-447 Warszawa, ul. Newelska 6, pokój 421, pon.-pt. 8-16
Motto - Jak sobie po?cielisz tak sie wy?pisz
Re: problem with ospf6 MTU VLAN interface [ In reply to ]
On Feb 22, 2018, at 10:40 AM, Bart?omiej Solarz-Nies?uchowski <Bartlomiej.Solarz-Niesluchowski@wit.edu.pl> wrote:
> I have strange problem with ospf6d + VLAN interface + fedora 27.
>
> in ospf6d config file(on disk) i have:
> interface enp1s0f0.224
> ipv6 ospf6 cost 1
> ipv6 ospf6 network broadcast
>
> BUT after rebooting serwer when i log in to management console:
> sh run
> interface enp1s0f0.224
> ipv6 ospf6 ifmtu 1504
> ipv6 ospf6 cost 1
> ipv6 ospf6 network broadcast
>
> interface has MTU 1500 bytes:
> sh interface enp1s0f0.224
> Interface enp1s0f0.224 is up, line protocol is up
> Link ups: 1 last: Thu, 22 Feb 2018 16:34:20 +0100
> Link downs: 0 last: (never)
> vrf: 0
> index 4 metric 0 mtu 1500
> flags: <UP,BROADCAST,RUNNING,MULTICAST>
> Type: Unknown
> HWaddr: 00:1e:67:37:67:bc
> inet 213.135.44.139/28 broadcast 213.135.44.143
> inet6 fe80::21e:67ff:fe37:67bc/64
> inet6 2001:1a68:a:3000::139/64
>
> WHY config automatically changing????

Maybe because .1q VLAN tags use four bytes?

/a
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