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BypassLSP is not working with IPv6

‎02-24-2020 08:12 PM

Hi 

 

I found the BypassLSP is not working with IPv4 and IPv6 in a time. But it's normal with IPv4 only. 

Even I modifed many confirguration, still couldn't figure out the root cause to fix it. 

 

Could you help me to check and see if something is wrong.

 

This below digram is my online structure.

Screen Shot 2020-02-25 at 11.54.30 AM.png

**** Without IPv6. *****

TOK0_RE0> show route 192.54.29.4

inet.0: 809222 destinations, 2504724 routes (809213 active, 1130 holddown, 1 hidden)
+ = Active Route, - = Last Active, * = Both

192.54.29.4/32 *[LDP/9] 00:05:39, metric 40
> to 192.54.29.37 via xe-1/2/2.0
to 192.54.29.25 via xe-0/2/0.0, label-switched-path xe-1/2/2.0:BypassLSP->192.54.29.4
[IS-IS/18] 00:05:39, metric 40
> to 192.54.29.37 via xe-1/2/2.0
[BGP/170] 00:05:39, localpref 100, from 192.54.29.4
AS path: I, validation-state: unverified
> to 192.54.29.37 via xe-1/2/2.0
to 192.54.29.25 via xe-0/2/0.0, label-switched-path xe-1/2/2.0:BypassLSP->192.54.29.4

 

**** With IPv6 ****

TOK_RE0> show route 192.54.29.4

inet.0: 808972 destinations, 2503479 routes (808969 active, 4 holddown, 1 hidden)
+ = Active Route, - = Last Active, * = Both

192.54.29.4/32 *[LDP/9] 00:00:02, metric 40
> to 192.54.29.37 via xe-1/2/2.0
[IS-IS/18] 00:16:29, metric 40
> to 192.54.29.37 via xe-1/2/2.0
[BGP/170] 00:16:29, localpref 100, from 192.54.29.4
AS path: I, validation-state: unverified
> to 192.54.29.37 via xe-1/2/2.0

 

thanks 

Cloud

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Routing

Re: BypassLSP is not working with IPv6

‎02-25-2020 09:35 AM

For most cases of mpls traffic engineering, we are dealing with RSVP. Not sure if any special requirement. Otherwise, I'd suggest use RSVP signaled LSP. Plaese create full mesh bi-directional LSPs

 

set protocols mpls label-switched-path <> to x.x.x.x
set protocols mpls label-switched-path <> link-protection

 

Also when you say ipv6, how are you expecting ipv6 to flow in the core? Usually you would need ipv6 tunneling to encapsulate ipv6 traffic into MPLS 


Mengzhe Hu
JNCIE x 3 (SP DC ENT)
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