[c-nsp] ASR903 Service instance MTU

Mohammad Khalil eng_mssk at hotmail.com
Wed Nov 11 03:36:06 EST 2015


So I have to raise the MTU on the physical interface that holds the service instances and then raise it on the pseudwire interfaces?

> From: s.kakaroukas at connecticore.com
> To: eng_mssk at hotmail.com; luky-37 at hotmail.com; sigurbjornl at vodafone.is; ggiannou at gmail.com
> CC: cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] ASR903 Service instance MTU
> Date: Tue, 10 Nov 2015 10:12:21 +0000
> 
> Hi,
> 
> You are correct. IIRC, changing the MTU on the pseudowire, changes just what
> you report as the MTU of the AC. Usually the parser will prevent you from
> doing something that won't work, or fix it for you, but I don't like to
> depend on that. Either way, you will have to at least increase the MTU on
> the ACs.
> 
> My thoughts and words are my own.
> 
> Kind Regards,
> 
> Spyros
> 
> 
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Mohammad Khalil
> Sent: Tuesday, November 10, 2015 9:17 AM
> To: Lukas Tribus <luky-37 at hotmail.com>; Sigurbjörn Birkir Lárusson
> <sigurbjornl at vodafone.is>; George Giannousopoulos <ggiannou at gmail.com>
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] ASR903 Service instance MTU
> 
> Thanks Lukas
> What am facing actually is that I got a request from my customer to raise
> the MTU for all his L2VPN connections (VFI,XCONNECT) AM afraid if I raised
> the MTU on the pseudowire interface while the physical interface MTU is
> still 1500 to cause an issue
> 
> > From: luky-37 at hotmail.com
> > To: eng_mssk at hotmail.com; sigurbjornl at vodafone.is; ggiannou at gmail.com
> > CC: cisco-nsp at puck.nether.net
> > Subject: RE: [c-nsp] ASR903 Service instance MTU
> > Date: Sun, 8 Nov 2015 19:00:14 +0100
> > 
> > Hi Mohammad,
> > 
> > 
> > > Hi all
> > > I have discovered that I can change the MTU as the below syntax 
> > > interface GigabitEthernet0/0/1 no ip address
> > >
> > > service instance 100 ethernet
> > > xconnect x.x.x.x {VC_ID} encapsulation mpls mtu {}
> > >
> > > But If I configured the below
> > > l2vpn xconnect context {NAME}
> > >
> > > There is no option for the MTU under it
> > 
> > 
> > You have to configure it on the pseudowire interface:
> > http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l2_vpns/configurat
> > ion/xe-3s/mp-l2-vpns-xe-3s-book/mp-any-transport-xe.html#concept_B3B08
> > 5AFF0384B5C867E3EF9A4C58564
> > 
> > 
> > 
> > Lukas
> >  		 	   		  
>  		 	   		  
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