Thanks for the reply Aleksandar,
I am aware of that, but even with directly connected peers I could chose to enable BFD per process instead of BOB. With BOB, it is also clear BFD per process is not necessary...so design wise and apart from scalability limitations, which is better ?
/Sam
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Great document and discussion, but one thing remains unclear to me.
On ASR platform, should BFD be configured on Bundle or BGP/IGP ?
interface Bundle-Ether100
bfd address-family ipv4 timers start 60 bfd address-family ipv4 timers nbr-unconfig 60 bfd address-family ipv4 multiplier 3 bfd address-family ipv4 destination x.x.x.x bfd address-family ipv4 fast-detect bfd address-family ipv4 minimum-interval 15
Or
router bgp 1
neighbor x.x.x.x remote-as 100 bfd fast-detect bfd multiplier 3 bfd minimum-interval 15
Can anyone clarify pros and cons of above different choices ?
Thanks in Advance
/Sam
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Good question !
While revisiting our now legacy configurations, I am looking at moving away from BFD on interface config and instead configure BFD per IGP/BGP.
So from
interface Bundle-Ether100
bfd address-family ipv4 timers start 60 bfd address-family ipv4 timers nbr-unconfig 60 bfd address-family ipv4 multiplier 3 bfd address-family ipv4 destination x.x.x.x bfd address-family ipv4 fast-detect bfd address-family ipv4 minimum-interval 15
To
router bgp 1
neighbor x.x.x.x remote-as 100 bfd fast-detect bfd multiplier 3 bfd minimum-interval 15
I think the protocol based BFD is more efficient that one the Bundle interface. But what is gained remains to be tested.
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Dear all,
I am looking at the following design challenge:
CE1-SWITCH-PE1-(VPLS cloud)-PE2-CE2
CE1 to switch is a trunk with 5 different VLANs(12, 13, 14, 15, 16), switch encapsulates the 5 vlans using 802.1ad into vlan 100.
PE(XR based), matches on 802.1ad vlan 100, and then add S-TAG 20.
What can I do on PE2(XR) to be able to present CE2 with a trunk where I can match on CE1's 5 original VLANs ?
Since I can match with outer and inner vlans, I cannot use encapsulation 20 12 for example, as the 2nd tag is 802.1ad vlan 100. My aim is to be able to match upper/outer tag (S-TAG) and customer VLANs (3rd inner) bypassing 2nd tag :-)
Any suggestions ?
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Are you able to run a debug while adding the /29 ?
Could it be case of duplicate IP configured on another node ?
If not, it is indeed odd !
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Dear all,
Is there an equivalent to "bgp bestpath igp-metric ignore" in XR ?
Else how can one deploy shadow reflector design in XR without this command?
TIA
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Hi Victor,
You may have already found an explanation or fix for this, but here is my input.
Try to test with RIB based instead of flow based, however be aware that RIB based may not be supported on ASR, even if CLI shows it as an option.
HTH
/Cisco Lad
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After more troubleshooting, I am suspecting a bug on 12.2(33)SRE5.
I cannot see how else a prefix sent as ::/0 is received as ::/8. Sending node is XR based which filter ::/8 natively.
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Dear all,
I receive ::/0 from our transit peer, and announce it to a reflector. Apart from next hep set to self, nothing else is changed.
On the reflector, I am not receiving prefix ::/0, but ::/8 instead, and pointing at next hop of peering node facing transit router.
::/8 is not even received on the peering node facing transit.
Config wise, I peer on IPv6 subnet facing transit, then 6PE towards the backbone, therefore sending labels under address family ipv6.
I am unable to replicate this in Lab environment.
On reflector:
sh bgp ipv6 unicast ::/0 BGP routing table entry for ::/8 , version 76796277 Paths: (3 available, best #2, table default)
Has anyone seen similar issue ?
TIA
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Daniel,
What is your view on static vs auto RP with regards to faster convergence for Multicast ?
I am aware of other features such as MoFRR and PIM or RPF timers tuning, bit just want to hear if there are any advantages for using static RP.
With regards to bugs, there is one bug affecting some XR platforms for auto RP...so static RP definitely comes in handy here.
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