zaid.hammoudi at gmail
Aug 3, 2012, 3:58 PM
Post #2 of 2
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Did you configure non stop-routing and non-stop bridging?
Sent from my iPhone
On 2012-08-03, at 4:06 PM, ryanL <ryan.landry [at] gmail> wrote:
> hi all. relatively new to juniper gear, very new to virtual chassis.
>
> have 2x ex4200 top of rack in vc. bare bones config. connected to two
> core 4500's, not doing vc. also not doing spanning-tree (no need).
> vrrp is on c1 and c2 for the rack subnet, formed via the 4200's. sorry
> if my bad ascii art doesn't format proper.
>
> c1-----ospf------c2
> | |
> | |
> | |
> 4200a-----vc----4200b
>
> i have a host hanging off the 4200's. when i reload the master 4200a,
> i see the mac address instantaneously get removed on c1, show up on
> c2, via 4200b. makes sense. i also see vrrp mastership flip to c2,
> which is done via link-tracking. why, then, do i see ~45s of data loss
> to the host? it seems to be 45s pretty much every time i punt.
>
> to test this i'm pinging the host from c1 and c2 simultaneously.
>
> the host is doing bond0, active/backup. it flips over properly when
> the active side fails.
>
> is there something special about vc that i'm missing? i enabled
> no-split-detection because without it was really really bad news.
>
> appreciate any insight or things to look for!
>
> ryanL
>
>
> root [at] fsad-rs> show configuration virtual-chassis
> no-split-detection;
> member 0 {
> mastership-priority 200;
> }
> member 1 {
> mastership-priority 200;
> }
>
> {master:1}
> root [at] fsad-rs> show virtual-chassis status
>
> Virtual Chassis ID: 2ecd.820c.7baf
> Virtual Chassis Mode: Enabled
> Mstr Mixed Neighbor List
> Member ID Status Serial No Model prio Role Mode ID Interface
> 0 (FPC 0) Prsnt BP0212245349 ex4200-48t 200 Backup N 1 vcp-0
> 1 vcp-1
> 1 (FPC 1) Prsnt BP0212245335 ex4200-48t 200 Master* N 0 vcp-0
> 0 vcp-1
>
> Member ID for next new member: 2 (FPC 2)
>
> {master:1}
>
> root [at] fsad-rs> show version
> fpc0:
> --------------------------------------------------------------------------
> Hostname: fsad-rs1
> Model: ex4200-48t
> JUNOS Base OS boot [11.4R2.14]
> JUNOS Base OS Software Suite [11.4R2.14]
> JUNOS Kernel Software Suite [11.4R2.14]
> JUNOS Crypto Software Suite [11.4R2.14]
> JUNOS Online Documentation [11.4R2.14]
> JUNOS Enterprise Software Suite [11.4R2.14]
> JUNOS Packet Forwarding Engine Enterprise Software Suite [11.4R2.14]
> JUNOS Routing Software Suite [11.4R2.14]
> JUNOS Web Management [11.4R2.14]
>
> fpc1:
> --------------------------------------------------------------------------
> Hostname: fsad-rs1
> Model: ex4200-48t
> JUNOS Base OS boot [11.4R2.14]
> JUNOS Base OS Software Suite [11.4R2.14]
> JUNOS Kernel Software Suite [11.4R2.14]
> JUNOS Crypto Software Suite [11.4R2.14]
> JUNOS Online Documentation [11.4R2.14]
> JUNOS Enterprise Software Suite [11.4R2.14]
> JUNOS Packet Forwarding Engine Enterprise Software Suite [11.4R2.14]
> JUNOS Routing Software Suite [11.4R2.14]
> JUNOS Web Management [11.4R2.14]
> _______________________________________________
> juniper-nsp mailing list juniper-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/juniper-nsp
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