08-30-2008 11:31 PM - edited 03-06-2019 01:05 AM
Please find the attachment for the network diagram. DSLAM is connected to the layer 2 access switch SW3. SW3 has two uplinks, one goes to SW1 and other goes to SW2. SW1 and SW2 have to act as Layer 2 switches. SW1 has the uplink to one of the PE and SW2 has the uplink to other PE. DSLAM provides Internet, Voice and IPTV. Internet is using PPPoE. So there is an l2 tunnel from DSLAM to BRAS which is connected to the MPLS. DSLAM will use only one vlan for all the access PVCs. Voice is provided using L3 vpn. DSLAM should access the VOICE VPN via both PE routers. IPTV is using multcast. PIM is configured till PE routers. Requirement is as follows,
1)Failure of a link between switches and routers should not affect any services.
2) Failure of a switch or a router should not affect the any services.
What is the solution to archive the requirements?
Regards,
Senthil
08-31-2008 01:07 AM
if each router in difrent vlan
use PVST
make sw1 primary root brig for the vlan connected to it PE and secondary in sw2
the same on sw2
add aditional uplink from each router to the other switch
also from sw1 and 2 to 3 make the uplinks as etherchannel of two physical links
so that in case of any of those links fails the other will continue
if helpful rate
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