I have 5 remote sites where I'm doing FTTH and transporting the traffic over a third-party transport gear to our HQ. Each site-HQ link is a separate VLAN and uniquely numbered. My preference is to burn up only one port on the Cisco 7609-S (RSP720-3C with WS-X6748-DFC3C) and transport gear by trunking the traffic between the two boxes. But I don't want to have a separate IP address pool (with associated static IP /24 and web filter /24) for each remote site. I would like each remote site to use the same address pool. So I'm looking for something like IRB.
SiteA SiteB SiteC SiteD SiteE | | | | | VLAN1 VLAN2 VLAN3 VLAN4 VLAN5 | | | | | ============================= | 802.1q tagged (1 thru 5) | 7609-S | DHCP server I could use the transport gear's VLAN-translation and drop off each site into their own physical port on the 7609-S but have it be the same VLAN, but that's burning more ports on both boxes than what I would like. But perhaps I have to use separate IP address pools for each remote site. That would have the benefit of reducing the L3-broadcast traffic. Frank -----Original Message----- From: Arie Vayner (avayner) [mailto:avay...@cisco.com] Sent: Tuesday, December 15, 2009 1:32 PM To: frnk...@iname.com; cisco-nsp@puck.nether.net Subject: RE: [c-nsp] Loopback/VLAN question Frank, Can you please explain what do you want to achieve? I think this should be done in a different way. Also, what HW do you have? Arie -----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Frank Bulk - iName.com Sent: Tuesday, December 15, 2009 20:19 To: cisco-nsp@puck.nether.net Subject: [c-nsp] Loopback/VLAN question I have several uniquely numbered 802.1q tagged links coming into a Cisco 7609-S (12.2(33)SRB3) on a single physical port. I would like to use the same group of subnets for each VLAN and I tried using loopbacks but it doesn't work. Any ideas on what I'm doing wrong? interface Loopback 2 ip dhcp relay information trusted ip dhcp relay information option-insert none ip dhcp relay information policy-action keep ip address a.b.c.1 255.255.255.0 ip address a.b.d.1 255.255.255.0 secondary ip address a.b.e.1 255.255.255.0 secondary ip helper-address w.x.y.z arp timeout 300 interface Vlan10 ip unnumbered loopback 2 ip dhcp relay information trusted ip dhcp relay information option-insert none ip dhcp relay information policy-action keep ip helper-address w.x.y.z interface Vlan11 ip unnumbered loopback 2 ip dhcp relay information trusted ip dhcp relay information option-insert none ip dhcp relay information policy-action keep ip helper-address w.x.y.z interface GigabitEthernet1/1 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 10, 11 switchport mode trunk end _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/