[c-nsp] ME3600 - SVI's + Service Instances

Tue Sep 16 03:51:33 EDT 2014

There's some performance degradation when using BDI instead of sub-interfaces

adam

From: CiscoNSP List [mailto:cisconsp_list at hotmail.com]
Sent: Tuesday, September 16, 2014 1:19 AM
To: b.turnbow at twt.it; Vitkovský Adam; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] ME3600 - SVI's + Service Instances

Thanks Brian - re service instances on the ASR, are there any negatives in doing this (As opposed to standard dot1q subints).

I will certainly be reading the config Guide, and will watch Waris's presentation  - Cheers.

> Subject: RE: [c-nsp] ME3600 - SVI's + Service Instances
> Date: Mon, 15 Sep 2014 18:34:26 +0200
> From: b.turnbow at twt.it<mailto:b.turnbow at twt.it>
> To: cisconsp_list at hotmail.com<mailto:cisconsp_list at hotmail.com>; adam.vitkovsky at swan.sk<mailto:adam.vitkovsky at swan.sk>; cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>
>
> Hi,
>
> I suggest you read the configuration Guide and there is a really good presentation from Waris at the cisco live site on the me series..
> http://www.cisco.com/c/en/us/td/docs/switches/metro/me3600x_3800x/software/release/15-4_2_S/configuration/guide/3800x3600xscg/swevc.html
>
> Yes under the physical interface you will have the service instances that match your vlans and get placed into a bridge domain .
> You can then place it in an svi to terminate ip o to another instance for l2 so you can use a service instance on the port towards your asr as well.
> The rewrite ingress tag removes/adds one vlan tag on the port so you may not need that going back twords the asr1000 if you want to maintain the same vlan, or can use it to map to another vlan.
> For the ASR you can check out service instances there as well or stay with sub int depending on what you need to do.
>
>
> Regards
>
> Brian
>
> > -----Original Message-----
> > From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> > CiscoNSP List
> > Sent: lunedì 15 settembre 2014 01:46
> > To: Vitkovský Adam; cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>
> > Subject: Re: [c-nsp] ME3600 - SVI's + Service Instances
> >
> > Thanks very much Adam! - Much appreciated.
> >
> > So each service instance goes "under" the physical Interface where we
> > expect that vlan to be presented? And bridge-domain (100) associates it with
> > vlan100? So on this phyiscal Int, we will have 100+ service instances under
> > it?(I wont have access to an ME to test until later this afternoon).
> >
> > We will be doing IPTransit + Peering to customers on the ASR1001's, and one
> > IPTransit provider hands off the IPTransit service on there AGG's (That
> > connect to the 4948's) as a vlan - Therefore, we need to get that vlan up to
> > the ASR1001's(As we receive full tables) - Would the trunk port connecting to
> > the ASR -> ME3600 be configured in a similar way to how you have described
> > below on the ME? And on the ASR, can we continue to just use a physical
> > port, which dot1Q subints? (Note we will also be running a p-t-p connection
> > between the ASR1001 +ME and running MPLS+iBGP+OSPF).....I was going to
> > use a dedicated port(s) for this(As each POP will have 2 x ASR1001's and 2 x
> > ME3600's) connected via a mesh.
> >
> > Thanks again for your help
> >
> >
> > > From: adam.vitkovsky at swan.sk<mailto:adam.vitkovsky at swan.sk>
> > > To: cisconsp_list at hotmail.com<mailto:cisconsp_list at hotmail.com>; cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>
> > > Subject: RE: [c-nsp] ME3600 - SVI's + Service Instances
> > > Date: Sun, 14 Sep 2014 14:59:53 +0000
> > >
> > > Hi,
> > >
> > > I'd use the service instances as it's more convenient.
> > >
> > > interface GigabitEthernet0/3
> > > description dot1q trunk to agg 4948
> > > switchport trunk allowed vlan none <--no vlans are accepted except those
> > specified under service instances.
> > > switchport mode trunk
> > > dampening
> > > mtu 9100
> > > load-interval 30
> > > !
> > > service instance 100 ethernet
> > > description agg-circuit-to-end-customer-100
> > > encapsulation dot1q 100 <--frames with topmost tag 100 will be accepted
> > by this service instance and the bridge domain specified below.
> > > rewrite ingress tag pop 1 symmetric <--vlan interface will accept only
> > untagged frames.
> > > service-policy input customer-100_in <--service policies are attached
> > under the service instance rather than vlan int.
> > > service-policy output customer-100_out
> > > bridge-domain 100 <--this will associate the service instance with a BD 100
> > and vlan interface 100.
> > >
> > > interface Vlan100
> > > description agg-circuit-to-end-customer-100 bandwidth 10000 vrf
> > > forwarding customer-100 ip address 100.1.1.1 255.255.255.252 no ip
> > > proxy-arp
> > >
> > >
> > > adam
> > >
> > > > -----Original Message-----
> > > > From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf
> > > > Of CiscoNSP List
> > > > Sent: Sunday, September 14, 2014 3:31 AM
> > > > To: cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>
> > > > Subject: [c-nsp] ME3600 - SVI's + Service Instances
> > > >
> > > > Hi Everyone,
> > > >
> > > > Very new to the ME3600 platform, so hoping someone can assist with
> > > > the
> > > > following:
> > > >
> > > > We currently have 4948's connecting to various carriers - Each port
> > > > is a trunk, and has a vlan per tail.
> > > > i.e.
> > > >
> > > > int gig1/1
> > > > desc AGG_TO_CARRIER_A
> > > > switchport trunk encapsulation dot1q switchport mode trunk
> > > > switchport trunk allowed vlan 10,20,30
> > > >
> > > > We then have another port on the 4948's (Trunk), that allows all
> > > > vlans from all the carrier AGG ports that connects to 7200's or
> > > > ASR1000's (We have multiple POP's), and each vlan is then added to
> > > > dot1q subint and thrown into a vrf or standard "Inet"
> > > > Interface....we also apply service-policys (egress shaping/ingress
> > > > marking) on the L3 Interfaces
> > > >
> > > > We are wanting to run MPLS on the ME3600s, and do all the L3 stuff
> > > > on them rather than the 7200'sand ASR's - So, we will still have the
> > > > 4948's, multiple carrier AGG's, multiple vlans's but the trunk
> > > > port(From the 4948s) that currently goes to the 7200's and ASR's
> > > > will now go to the ME3600s - So, a few
> > > > questions:
> > > >
> > > > 1. What would the ME3600 Trunk port(That connects back to the 4948)
> > > > config look like? i.e. Similar to how we currently do it
> > > > (switchport trunk allowed vlan 10,20.30,40...), and then create
> > > > SVI's for each vlan and apply L3/VRF/service policies? Or do SVI's
> > > > not support service policies and we would need to use service
> > > > instances? (The 4948's typically have ~100+ vlans(tails) from the
> > > > various carrriers)
> > > >
> > > > 2. If service instances are required, can anyone please provide an
> > > > example of how the config would look (Or point me to some
> > > > documentation please?)
> > > >
> > > > Thanks in advance for your help.
> > > >
> > > >
> > > >
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