Talking with Cisco about this, but since it isn't a complete network down situation, they have me waiting. Background on this is I moved my network from a single legged 2900 router to a HSRP pair of ISR4321 routers. Access switch trunked into Gi0/0/1 with a handful of sub-inf acting as the default gateway for everything.
When I have all VLANs/sub-inf on one of the ISRs, network slows down to shit. I peel off half of them, its much better, but still getting drops.
GigabitEthernet0/0/1 is up, line protocol is up Hardware is ISR4321-2x1GE, address is 2cab.ebba.8941 (bia 2cab.ebba.8941) Description: co-asw-stack // eth1/48 // trunk MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec, reliability 255/255, txload 3/255, rxload 1/255 Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set Keepalive not supported Full Duplex, 1000Mbps, link type is auto, media type is RJ45 output flow-control is off, input flow-control is off ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 21:03:07 Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 161125
Right now the network is working fine, but I have half of the networks on one ISR and the other half on the other ISR. The moment I have everything on one interface, local network latency goes to shit and services between vlans go to hell.
Switch all have default-GW pointed to the network management interface of the ISRs and none of them are running L3 routing. The base interface of the ISR is default. Should there be anything more that needs to be added to it?
interface GigabitEthernet0/0/1
description co-asw-stack // eth1/48 // trunk
no ip address
negotiation auto
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