[c-nsp] MTU on GigE

[Aivars]

You have to rise interface MTU and only after that you will be able to
increase (adjust) IP MTU.

Aivars

Wednesday, October 19, 2005, 2:48:40 PM, you wrote:

VDK> Thanks,

VDK> it was "mtu":

VDK> Router(config)#int gigabitEthernet 0/2
VDK> Router(config-if)#ip mtu 1600
VDK>                             ^
VDK> % Invalid input detected at '^' marker.

VDK> Router(config-if)#ip mtu ?
VDK>   <68-1500>  MTU (bytes)

VDK> Vincent

>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
>> bounces at puck.nether.net] On Behalf Of Peter Salanki
>> Sent: mercredi 19 octobre 2005 10:44
>> To: Vincent De Keyzer
>> Cc: cisco-nsp at puck.nether.net
>> Subject: Re: [c-nsp] MTU on GigE
>> 
>> try the mtu/ip mtu command.
>> 
>> 19 okt 2005 kl. 10.35 skrev Vincent De Keyzer:
>> 
>> > Hello again,
>> >
>> >
>> >
>> > I was under the impression that the MTU on a GigE interface was
>> > higher than
>> > 1500 bytes. Is it true?
>> >
>> >
>> >
>> > If yes, then why does my 7206VXR/NPE-G1 say the following?
>> >
>> >
>> >
>> > GigabitEthernet0/2 is up, line protocol is up
>> >
>> >   Hardware is BCM1250 Internal MAC, address is 0014.a862.b71a (bia
>> > 0014.a862.b71a)
>> >
>> >   Internet address is x.y.z.198/30
>> >
>> >   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
>> >
>> >      reliability 255/255, txload 2/255, rxload 4/255
>> >
>> >   Encapsulation ARPA, loopback not set
>> >
>> >   Keepalive set (10 sec)
>> >
>> >   Full-duplex, 1000Mb/s, link type is auto, media type is SX (.)
>> >
>> >
>> >
>> > Config is
>> >
>> >
>> >
>> > interface GigabitEthernet0/2
>> >
>> > ip address x.y.z.198 255.255.255.252
>> >
>> >  no ip redirects
>> >
>> >  no ip unreachables
>> >
>> >  no ip proxy-arp
>> >
>> >  no ip route-cache cef
>> >
>> >  no ip route-cache
>> >
>> >  ip ospf cost 15
>> >
>> >  duplex full
>> >
>> >  speed 1000
>> >
>> >  media-type gbic
>> >
>> >  negotiation auto
>> >
>> >  no clns route-cache
>> >
>> > end
>> >
>> >
>> >
>> >
>> >
>> > Vincent
>> >
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/cisco-nsp
>> > archive at http://puck.nether.net/pipermail/cisco-nsp/
>> >
>> 
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