Hi all First time post so please be gentle :)
Just wondering what the options are for first hop redundancy when using evc + bridge domain. The basic topology is two asrs are connected to a switch. Into that switch is a connection from a local layer 2 fibre provider. Per customer connections are handed over with 2x dot1q tags. Router config looks something like below. The aim is the end user will have an ip (e.g. 192.168.1.1/24) and route via a virtual ip (192.168.1.254) . If there is a failure second router assumes IP and traffic keeps flowing. The reason for using the bridge is to save IP addresses - i.e. not assigning a /29 to each connection. According to http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/bdi.html hsrp & vrrp isn't supported on the bridge interface. I have no experience using GBLP but tried using the config below. This didn't work. On the client router I could see it learning the GBLP MAC address but pings both ways failed. The switch in the middle was showing the MAC address as well. Second option I was looking at trying is using a combination of EEM, ip sla + track. E.g. router 2 pings router 1, if pings fail the eem applet adds the virtual IP address. Rough script below. Any help, advice or a realty check if i'm doing something silly would be greatly appreciated. Thanks Bryan Router 1 (primary) interface GigabitEthernet0/0/1 no ip address negotiation auto service instance 1 ethernet encapsulation dot1q 5 second-dot1q 500 rewrite ingress tag pop 2 symmetric bridge-domain 1 interface BDI1 ip address 192.168.1.252 255.255.255.0 Router 2 (backup) interface GigabitEthernet0/0/1 no ip address negotiation auto service instance 1 ethernet encapsulation dot1q 5 second-dot1q 500 rewrite ingress tag pop 2 symmetric bridge-domain 1 interface BDI1 ip address 192.168.1.253 255.255.255.0 GBLP Config interface BDI1 glbp 1 authentication text abc123 glbp 1 preempt glbp 1 priority 150 (set lower on backup router) glbp 1 timers 5 15 glbp 1 ip 192.168.1.254 Script to move IP ip sla 10 icmp-echo 192.168.1.252 timeout 5000 frequency 5 ip sla schedule 10 life forever start-time now track 10 ip sla 10 reachability delay down 10 up 10 event manager applet primary_router_down event track 10 state down action 1.0 syslog msg "Primary router offline" action 1.1 cli command "enable" action 1.2 cli command "conf t" action 1.3 cli command "int bdi1" action 1.4 cli command "ip address 192.168.1.254 secondary" action 1.5 cli command "exit" action 1.6 cli command "wr" event manager applet primary_router_up event track 10 state up action 1.0 syslog msg "Primary router online" action 1.1 cli command "enable" action 1.2 cli command "conf t" action 1.3 cli command "int bdi1" action 1.4 cli command "no ip address 192.168.1.254 secondary" action 1.5 cli command "exit" action 1.6 cli command "wr" _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
