LACP on ISR 2951 ... Layer2 Port Channel

[chennai.itsupport]

Hi Team,

Can you let me know how to enable LACP on cisco 2951 Version 15.2(4)M7

Below is my config:

Router:

interface Port-channel1.1
 description DEVICES$FW_INSIDE$$ETH-LAN$
 encapsulation dot1Q 1 native
 ip address 1.1.1.1 255.255.255.0
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 ip nat inside
 ip virtual-reassembly in max-reassemblies 1024
 zone-member security in-zone
 ip tcp adjust-mss 1300
 ip policy route-map PBR
!
interface Port-channel1.2
 description AFULL$FW_INSIDE$$ETH-LAN$
 encapsulation dot1Q 2
 ip address 1.1.2.1 255.255.255.0
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 ip nat inside
 ip virtual-reassembly in max-reassemblies 1024
 zone-member security in-zone
 ip tcp adjust-mss 1300
 ip policy route-map PBR

Switch: 

interface Bridge-Aggregation1
 port link-type hybrid
 port hybrid vlan 1 to 4 tagged
 link-aggregation mode dynamic
#
interface GigabitEthernet1/0/1
 port link-type hybrid
 port hybrid vlan 1 to 4 tagged
 poe enable
 stp edged-port enable
 port link-aggregation group 1
#
interface GigabitEthernet1/0/2
 port link-type hybrid
 port hybrid vlan 1 to 4 tagged
 poe enable
 stp edged-port enable
 port link-aggregation group 1

When i enable LACP on the HP switch by giving the command  link-aggregation mode dynamic

There is no traffic between the router and HP but if i disable LACP on the HP switch ... traffic is flowing without any problem.

Can you guys help me to enable LACP on the cisco 2951 as i don't see any cli related to lacp.... but i need to enable LACP on both router and the HP switch....

[chennai.itsupport]

in other words how do i enable lacp on cisco 2951 router

[Reuben Farrelly]

You can't - it's not supported.  The only option you have is 'bundling' the ports into a port-channel (as you have done) which just aggregates them, but there is no actual link aggregation protocol running.

[chennai.itsupport]

Hi Reuben,

Thank you .... well that is sad based on the price of ISR ... i was thinking if i can enable lacp on the ISR i can have the same settings on the HP switch for our router and firewall. And if any one goes down ... i can just manually connect whichever one is working on the HP switch....

Now my settings is in such a way that when i want to connect the Firewall to the HP switch i have to enable LACP and when i want to connect the ISR to HP switch i have to disable LACP on the switch... which is not good .... if something happen especially when i'm out of town......

sob...