diff --git a/custom_router/router.py b/custom_router/router.py
index ffbf0e7..da33fc8 100644
--- a/custom_router/router.py
+++ b/custom_router/router.py
@@ -3,6 +3,7 @@
 import json
 from dataclasses import dataclass
 from datetime import datetime
+from collections import deque
 
 @dataclass
 class Packet:
@@ -12,12 +13,14 @@ class Packet:
     timestamp: datetime = datetime.now()
 
 class Router:
-    def __init__(self, router_id: str):
+    def __init__(self, router_id: str, max_capacity: int = 100):
         self.router_id = router_id
         self.routing_table: Dict[str, Dict[str, int]] = {}  # {destination: {next_hop: cost}}
         self.neighbors: Dict[str, int] = {}  # {neighbor_id: cost}
-        self.packet_queue: List[Packet] = []
+        self.packet_queue: deque[Packet] = deque(maxlen=max_capacity)  # FIFO queue with max capacity
         self.network_graph = nx.Graph()
+        self.max_capacity = max_capacity
+        self.packet_count: Dict[str, List[Packet]] = {}  # {destination: [packets]}
         
     def add_neighbor(self, neighbor_id: str, cost: int):
         """Add a neighbor router with associated cost."""
@@ -32,23 +35,53 @@ def remove_neighbor(self, neighbor_id: str):
             self.network_graph.remove_edge(self.router_id, neighbor_id)
             self.update_routing_table()
             
-    def receive_packet(self, packet: Packet):
+    def receive_packet(self, packet: Packet) -> bool:
         """Receive a packet and either forward it or process it."""
+        if len(self.packet_queue) >= self.max_capacity:
+            return False  # Queue is full
+            
         if packet.destination == self.router_id:
             self.packet_queue.append(packet)
+            self._update_packet_count(packet)
             return True
         else:
             return self.forward_packet(packet)
             
     def forward_packet(self, packet: Packet) -> bool:
-        """Forward a packet to the next hop based on routing table."""
+        """Forward a packet to the next hop based on routing table using FIFO."""
         if packet.destination in self.routing_table:
             next_hop = min(self.routing_table[packet.destination].items(), 
                          key=lambda x: x[1])[0]
             # In a real implementation, this would send the packet to next_hop
+            self._update_packet_count(packet)
             return True
         return False
         
+    def _update_packet_count(self, packet: Packet):
+        """Update packet count for the destination."""
+        if packet.destination not in self.packet_count:
+            self.packet_count[packet.destination] = []
+        self.packet_count[packet.destination].append(packet)
+        
+    def get_packet_count(self, destination: str, start_time: Optional[datetime] = None, 
+                        end_time: Optional[datetime] = None) -> int:
+        """Get count of packets for a destination within a timeframe."""
+        # can this be done more optimally?
+        if destination not in self.packet_count:
+            return 0
+            
+        packets = self.packet_count[destination]
+        if start_time is None and end_time is None:
+            return len(packets)
+            
+        filtered_packets = packets
+        if start_time:
+            filtered_packets = [p for p in filtered_packets if p.timestamp >= start_time]
+        if end_time:
+            filtered_packets = [p for p in filtered_packets if p.timestamp <= end_time]
+            
+        return len(filtered_packets)
+        
     def update_routing_table(self):
         """Update routing table using distance vector algorithm with split horizon."""
         # Initialize routing table with direct neighbors
@@ -68,4 +101,12 @@ def get_routing_table(self) -> Dict[str, Dict[str, int]]:
         
     def get_packet_queue(self) -> List[Packet]:
         """Return the current packet queue."""
-        return self.packet_queue 
\ No newline at end of file
+        return list(self.packet_queue)
+        
+    def get_queue_size(self) -> int:
+        """Return the current size of the packet queue."""
+        return len(self.packet_queue)
+        
+    def is_queue_full(self) -> bool:
+        """Check if the packet queue is full."""
+        return len(self.packet_queue) >= self.max_capacity 
\ No newline at end of file