# Multiple OSPF instance and type 5 LSA
**URL:** https://forum.networklessons.com/t/multiple-ospf-instance-and-type-5-lsa/7948
**Category:** OSPF
**Created:** [August 16, 2019, 1:34pm UTC](https://forum.networklessons.com/t/multiple-ospf-instance-and-type-5-lsa/7948 "2019-08-16T13:34:39Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@gazwoz](https://forum.networklessons.com/u/gazwoz)
#### Post date: [August 16, 2019, 1:34pm UTC](https://forum.networklessons.com/t/multiple-ospf-instance-and-type-5-lsa/7948/1 "2019-08-16T13:34:39Z")
Hello!
I’ve been learning about type-5 LSAs or Autonomous System External LSAs and wondered how having more than one instance of OSPF running on the same device would affect this?
Would you have to redistribute from one process into another to share routes?
Would each instance or OSPF process ID be considered a different Autonomous System?
Thanks,
Gareth.
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### Author:  [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [August 18, 2019, 4:45am UTC](https://forum.networklessons.com/t/multiple-ospf-instance-and-type-5-lsa/7948/2 "2019-08-18T04:45:05Z")
A post was merged into an existing topic: [OSPF LSA Types Explained](https://forum.networklessons.com/t/ospf-lsa-types-explained/1127)
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### Author:  [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [August 18, 2019, 4:45am UTC](https://forum.networklessons.com/t/multiple-ospf-instance-and-type-5-lsa/7948/3 "2019-08-18T04:45:05Z")