Robert,

Even then, the core SP router may ignore the PSSI.

Recall that the first two bits of the PSSI option are 00. This means that if 
the processing node doesn’t recognize the PSSI, or is configured to ignore the 
PSSI, it will simple skip over the PSSI.

In most cases, core SP routers will be configured to ignore the PSSI.

                                                                             Ron

From: Robert Raszuk <[email protected]>
Sent: Friday, September 20, 2019 1:22 PM
To: Ron Bonica <[email protected]>
Cc: Dirk Steinberg <[email protected]>; Tom Herbert <[email protected]>; 
Darren Dukes (ddukes) <[email protected]>; [email protected]; SPRING WG 
<[email protected]>; 6man <[email protected]>; Rob Shakir <[email protected]>; Tarek 
Saad <[email protected]>
Subject: Re: [spring] “SRV6+” complexity in forwarding

Hi Ron,

No one is questioning that. If packet's destination is not a local address of a 
router all options can be ignored.

Fun however starts when destination address in the packet *is* a local address 
on the router ie. the router is acting as Segment Endpoint.

Thx,
R.

On Fri, Sep 20, 2019 at 7:09 PM Ron Bonica 
<[email protected]<mailto:[email protected]>> wrote:
Likewise, SP core routers would ignore the PSSI and wouldn’t even see the PPSI.

                                                      Ron


From: Dirk Steinberg <[email protected]<mailto:[email protected]>>
Sent: Wednesday, September 18, 2019 7:40 PM
To: Tom Herbert <[email protected]<mailto:[email protected]>>
Cc: Darren Dukes (ddukes) <[email protected]<mailto:[email protected]>>; 
[email protected]<mailto:[email protected]>; SPRING WG 
<[email protected]<mailto:[email protected]>>; 6man 
<[email protected]<mailto:[email protected]>>; Robert Raszuk 
<[email protected]<mailto:[email protected]>>; Ron Bonica 
<[email protected]<mailto:[email protected]>>; Rob Shakir 
<[email protected]<mailto:[email protected]>>; Tarek Saad 
<[email protected]<mailto:[email protected]>>
Subject: Re: [spring] “SRV6+” complexity in forwarding

SRv6 does not require TLV processing for normal forwarding (use case: SP core).

- Dirk



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