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miasharmse84
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RouterOS v7.6 Fail to establish BGP Session

Tue Nov 01, 2022 9:39 am

When establishing BGP Session we get the following error message: Write to bgp failed (32) { #buf=1 max=64 sk=Socket{ 5 a } }

We have an existing BGP session to another peer which is working just fine, we are receiving around 138 000 routes on this session.
We are now trying to establish a second BGP session where we expect to receive another 180 000 routes, however this session fails with the above error message.

CCR2116-12G-4S+
RouterOS v7.6
 
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jbl42
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Re: RouterOS v7.6 Fail to establish BGP Session

Tue Nov 01, 2022 12:18 pm

This issue was introduced with 7.5, and still happening with 7.6:
viewtopic.php?t=190072#p964372

It was reported to be fixed, but is still appears in the current 7.7 beta
viewtopic.php?t=190351#p965140

For our three CCR2216, we had to go back to 7.4.1 to have BGP working.
 
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mrz
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Re: RouterOS v7.6 Fail to establish BGP Session

Tue Nov 01, 2022 12:27 pm

Memory limit is unrelated to this OP problem.

Check if for second BGP session local address is picked correctly.

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