06-28-2023 05:23 AM
traffic is sent to ASR1 as it's booting up but no traffic is getting through since it hasn't fully come up. We want to have it routed through ASR2 until ASR1 is fully booted up. please let me know what I can do to accomplish this. We use ASAs
06-28-2023 05:25 AM
sorry ASR or ASA ?
06-28-2023 08:47 AM
ASR my bad
06-28-2023 08:47 AM
Made a mistake it is a ASR not ASA
06-28-2023 09:49 AM
Can you provide a diagram of how and to what the ASRs connected?
Are they providing Internet connectivity? Do you have one or multiple ISPs?
HTH
07-10-2023 04:03 AM
they are not providing internet connectivity, We do not have a ISPs.
The ASR is connected to another ASR, one ASR is called ASR1, and the other is ASR2 then off of ASR1 is CS1 and off ASR2 is CS2 the point of ASR1 and ASR2 is to have a backup ASR in case ASR1 was to fail. all connect to each other. the issue we want to fix is to reduce the amount of video downtime that occurs when ASR1 is booting up. The Solution should force the network traffic to be routed over ASR2 until ASR1 is fully operational again. Right now we have a latency issue when ASR1 goes down it takes 20-30 seconds for ASR2 to take over, then when ASR1 starts to bootup and is fully opertational it takes another 20-30 seconds for it to take control back. We are trying to reduce this failover time because we want to keep our mGRE tunnel functional at all times with little to none downtime as the ASRs' are doing their failover.
07-10-2023 04:25 AM
so ASR1 and ASR2 is run DMVPN mGRE tunnel?
if Yes then solution need more work can I see config of tunnel interface ?
07-10-2023 04:51 AM
it is a mGRE tunnel, That tunnel goes to another Router that they both connect to, ASR 1 and ASR2 is connected via ethernet.
07-10-2023 04:56 AM
So let summary what happened here
1- mGRE from both ASR1 and ASR2 toward Spoke Router
2- the mGRE use to advertise the prefix to Spoke Router
3- the Spoke router must failover between ASR1 and ASR2 when one of them failed to advertise the prefix
am I correct ?
07-10-2023 05:26 AM
yes you are.
07-10-2023 05:47 AM
so we have these ways
1- run BFD multi Hop (if it support with mGRE)
2- run keep alive (if it support with mGRE)
3- run IP SLA track with EEM, the action will remove Tunnel to ASR1/2 depend in status of track UP/Down
that way Spoke router can fast detect mGRE tunnel and withdraw any prefix learn from tunnel
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