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Problems with MRA configuration

Hi everyone, in my company we are now deploying MRA, but I have some problems configuring the two expressway. In particular i get what you see in the attachments.

 

Can anyone help? Zones, search rules and domains are properly configured i guess.

 

Thanks a lot.

1 ACCEPTED SOLUTION

Accepted Solutions

I would prefer going with dual NIC.

 

Example configuration

Expressway C

 

NIC IP  192.168.10.10 >> VOIP VLAN

 

Internal  DNS Records

  • Certificate

    • Generate CSR, sign the certificate using Internal CA of domain  internal.domain.it.
    • Upload CA root to trust
    • upload the Server certificate.

 

CUCM

 

CUCM IP : 192.168.10.9

Certificate

  • Generate CSR, sign the certificate using Internal CA of domain  internal.domain.it.
  • Upload CA root certificate to trust
  • upload the Server server certificate.

Internal  DNS Records

_cisco-uds._tcp.internal.domain.it SRV service location:
priority = 6
weight = 30
port = 8443
svr hostname =cucm.internal.domain.it

 

Do the same with other nodes.

 

Expressway E

 

NIC 1 IP  192.168.10.10 >> VOIP VLAN

NIC 2 IP  192.168.20.10 >>DMZ IP

Public IP 45.45.45.26

 

Internal DNS

 

  • Create  subzone domain.it 
  • A record(Forward and reverse Lookup) in domain.it.  expresswayE.domain.it  192.168.20.10
  • Certificate

    • Generate CSR, sign the certificate using public CA (what ever your provider)
    • while generating CSR DNS filed should have entry domain.it
    • Upload public CA root to Expressway C and E trust 
    • Upload root CA of   internal.domain.it  to trust
    • upload the Server server certificate.

Public DNS Records

 

  • A record(Forward and reverse Lookup) expresswayE.domain.it  <<YOUR PUBLIC IP>>
  • SRV   _collabedge._tls.domain.it pointing to above IP/Hostname

 

when configure dual NIC, use your network design. and the above is just an example configuration.

 



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28 REPLIES 28
Nithin Eluvathingal
VIP Advisor

whats the status  of the Zone between E and C is it active ?

 

 



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First of all thanks for the fast reply. In the attachments the zone status.

The state is in Warning, can you check  why it shows warning. its should show active.



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The problem is exactly the one you mentioned. The status should be active, but instead it shows warning with reason "Systems unreachable" and I don't know why.

Is it a single NIC or dual NIC.

Looks like you have issue with SIP reachability . you need to check your configuration.

 

 



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Scott Leport
Participant

Hi there,

 

This document will have you covered. Have a look at the "Install MRA" section:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressway-deployment-guide.html

 

 

 

Thanks a lot, I'll take a look.

Can you also check or share the screenshot from Configuration >> Unified Communication >> Unified CM. 

select the call manager and perform and refresh and see if it doesnt give any error? 

 

Regards, 

Yes for sure, thanks a lot. As you can see.. there is a problem on exp-e proxy forwarding.

The error message says that there is no Unified Communication traversal zone between the E and C. Correct that and check again.



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yes I read it, but still... zones are configured. You can check the screenshot I already uploaded for more details.

The screen shots show a zone, but not that it’s a Unified Communication traversal zone. Please provide a screenshot of the entire configuration of the zone on both C and E.



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Just a question.. on the version X12.5 the zones between exp-c and exp-e must be a Unified Communication traversal or Traversal Client - Traversal Server?

From what I know for MRA it always have to be the Unified Communication traversal specific type of zone.



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