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nt24002
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Multicast 224.0.0.251 through ASA

Sat Jul 02, 2016 9:42 am

Hi there,

i hesitated where to put this subject, routing or ASA...

I need to forward multicast trafic for a Bonjour services from wired Apple TV through few routhers & 2 FW ASA to finally reach my WC in other subnet who will serve the apple clients.

i'm not sure is it possible... cause TTL=1

but i think that with PIM SM the TTL will be "duplicated" & forwarded by PIM SM interface(s), i'will check this out on tuesday.
# ip multicast routing & ip pim rp-address in global conf (can i have 2 statiques RP Points ? on each side of FW ?)
# ip ip pim sparse-mode on interface

But how should i set up the ASA ?
# igmp forward interface ?
can you give me the correct configuration please ? mroutes ? ACL ?

i usually work on checkpoint web, now i have ASA CLI

thank you for any help

nt24002
New Member
Posts:
5
Joined:
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Certs:
ccna

Re: Multicast 224.0.0.251 through ASA

Fri Jul 08, 2016 4:33 pm

Hi,

Thanks for approuving my post
The situation is little step further... and questions now are more on multicast himself then ASA (any help for ASA is welcomed).

I will have 20 Apple TVm qll of them announcing for group 224.0.0.251 (mDNS Bonjour AirPlay)
- is this possible ? many sources announcing for the same multicast group ?

If i understood the process
1. Apple TV(s) will announce their services to WLC by mDNS 224.0.0.251 (TTL=1 ?)
2. WLC will "storage" those services (AirPlay) waiting for a clients
3. Client will ask for a services sending the request to WLC
4. WLC will serve the IPad

How it will be managed for 20 Apple TV & 20 IPads ?
Can the WLC accept 20 times a multicast offer [ip.src 10.10.10.1-20 ip.dst 224.0.0.251] ?

If an IPad dont get the AirPlay and the others do, how can i troubleshot this ?

Is the interface configuration for PIM the same for HSRP, Etherchannel, vlan & phisical interface ?)

i'm getting crazy :) and not event started.

nt24002
New Member
Posts:
5
Joined:
Sat Jun 04, 2016 5:31 am
Certs:
ccna

Re: Multicast 224.0.0.251 through ASA

Fri Jul 08, 2016 4:33 pm

Hi,

Thanks for approuving my post
The situation is step further... and questions now are more on multicast himself then ASA (any help for ASA is welcomed).

I will have 20 Apple TVm qll of them announcing for group 224.0.0.251 (mDNS Bonjour AirPlay)
- is this possible ? many sources announcing for the same multicast group ?

If i understood the process
1. Apple TV(s) will announce their services to WLC by mDNS 224.0.0.251 (TTL=1 ?)
2. WLC will "storage" those services (AirPlay) waiting for a clients
3. Client will ask for a services sending the request to WLC
4. WLC will serve the IPad

How it will be managed for 20 Apple TV & 20 IPads ?
Can the WLC accept 20 times a multicast offer [ip.src 10.10.10.1-20 ip.dst 224.0.0.251] ?

If an IPad dont get the AirPlay and the others do, how can i troubleshot this ?

Is the interface configuration for PIM the same for HSRP, Etherchannel, vlan & phisical interface ?)

i'm getting crazy :) and not event started.

'

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